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Spider species are important for maintaining ecological balance, controlling insect populations, and providing potential sources of medicinal compounds. Highlighting the importance of spider species, the present study was aimed at exploring the diversity of spider fauna and species richness in various habitats in District Mardan, Khyber Pakhtunkhwa, Pakistan, from March 2021 to December 2021. Spiders were collected through different methods: pitfall traps, cryptic searching, ground hand collection, aerial hand collection, and vegetation beating. Then, the captured spiders were washed in alcohol and preserved in a combination of 80% alcohol and 20% glycerol for further observation. Identification was carried out with the help of available spider identification keys and literature. A total of 578 specimens representing 29 species from 17 families and 26 genera were collected and identified. Family Lycosidae was the most dominant family (13.49%), followed by Salticidae (10.2%), Araneidae (8.47%), Tetragnathidae (7.61%), Pholicidae (6.4%), Oxyopidae (5.88%), Thomisidae (5.7%), Clubionidae (5.53%), Sicariidae (5.19%), Scytodidae (5.01%), Corinnidae (4.67%), Agelenidae (4.32%), Cheiracanthiidae and Sparassidae (4.15%), Oecobiidae and Hersiliidae (3.97%) and Theridiidae was the rarest among all (1.21%). The most commonly identified species are Hippasa partita, Lycosa poonaesis, Lycosa terrestris, Draposa oakleyi, Plexippus paykulli, Menemerus nigli, Thyene imperialis, Thyene bivittate and Hasarius adansoni. Argiope versicolor, Neoscona theisi, Tetragnatha extensa, Crossopriza lyoni, and Oxyopes Javanus. During the present study, it was observed that spider species were abundantly found in warm areas from May to August, which demonstrates that the spider fauna of the study area is very rich but has yet to be explored.

As espécies de aranhas são importantes para manter o equilíbrio ecológico, controlar populações de insetos e fornecer fontes potenciais de compostos medicinais. Destacando a importância das espécies de aranhas, o presente estudo teve como objetivo explorar a diversidade da fauna de aranhas e a riqueza de espécies em vários habitats no Distrito de Mardan, Khyber Pakhtunkhwa, Paquistão, de março de 2021 a dezembro de 2021. As aranhas foram coletadas por meio de diferentes métodos: armadilhas de queda, busca críptica, coleta manual no solo, coleta manual aérea e batida na vegetação. Em seguida, as aranhas capturadas foram lavadas em álcool e preservadas em uma combinação de 80% de álcool e 20% de glicerol, para observação posterior. A identificação foi realizada com a ajuda de chaves de identificação de aranhas disponíveis e da literatura. Um total de 578 espécimes representando 29 espécies, de 17 famílias e 26 gêneros, foram coletados e identificados. A família Lycosidae foi a família mais dominante (13,49%), seguida por Salticidae (10,2%), Araneidae (8,47%), Tetragnathidae (7,61%), Pholicidae (6,4%), Oxyopidae (5,88%), Thomisidae (5,7%), Clubionidae (5,53%), Sicariidae (5,19%), Scytodidae (5,01%), Corinnidae (4,67%), Agelenidae (4,32%), Cheiracanthiidae e Sparassidae (4,15%), Oecobiidae e Hersiliidae (3,97%) e Theridiidae, que foi a mais rara entre todas (1,21%). As espécies mais comumente identificadas são Hippasa partita, Lycosa poonaesis, Lycosa terrestris, Draposa oakleyi, Plexippus paykulli, Menemerus nigli, Thyene imperialis, Thyene bivittate e Hasarius adansoni, Argiope versicolor, Neoscona theisi, Tetragnatha extensa, Crossopriza lyoni e Oxyopes Javanus. Durante o estudo atual/presente, observou-se que espécies de aranhas foram encontradas abundantemente em áreas quentes de maio a agosto, o que demonstra que a fauna de aranhas da área de estudo é muito rica, mas ainda pouco explorada.

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The aims of the present research was to find out the diversity of family Araneidae in district Swat Pakistan and to provide updated checklist of the family Araneidae from Pakistan. Also their occurrence throughout the year was given from District Swat Khyber Pakhtunkhwa, Pakistan. Data was collected from January 2018 to December-2018 from seven different Tehsils of District Swat by using different methods like pitfall trap, ground hand collection, air hand collection and were then preserved in plastic vials and appendorf tubes by using 70% ethanol. Camera mounted on microscope was used for photography. By using literature from World Spider Catalog, 2022, spiders were identified to species level. In a ttal of 1243 specimens of family Araneidae 4 genera and 7 species were identified. Dominant species with great number of specimen collected was Cyrtophora citricolla with 229 (18.4%) samples, followed by Bojaranius mitificus (15.7%), Neoscona Scylla (15.4%), Argiope lobata (14.8), Neoscona theisi (14.6%) and Neoscona polyspinippes (13.8%) respectively. While lowest collection was done of Argiope versicolor with 90 (7.3%) samples. High occurrence of spiders was studied during July 187 samples. Fluctuation in temperature can affect the diversity of spiders observed and recorded in present study with lowest collection done in low temperature. Moreover, the humidity also play a great role in spiders' population and occurrence.

Os objetivos da presente pesquisa foram descobrir a diversidade da família Araneidae no distrito Swat, Paquistão, e fornecer uma lista atualizada da família Araneidae nesse país. Sua ocorrência ao longo do ano também foi dada no Distrito Swat, Khyber Pakhtunkhwa, Paquistão. Os dados foram coletados de janeiro de 2018 a dezembro de 2018 de sete diferentes Tehsils, do Distrito Swat, usando métodos diferentes, como armadilha de queda, coleta no solo com a mão e coleta no ar com a mão, e foram então preservados em frascos de plástico e tubos eppendorf usando etanol 70%. Foi usada câmera montada em microscópio para fotografia. Utilizando a literatura do World Spider Catalog (2022), as aranhas foram identificadas em nível de espécie. Em um total de 1.243 exemplares da família Araneidae, foram identificados 4 gêneros e 7 espécies. A espécie dominante com grande número de espécimes coletados foi Cyrtophora citricola com 229 (18,4%) amostras, seguida por Bojaranius mitificus (15,7%), Neoscona scylla (15,4%), Argiope lobata (14,8%), Neoscona theisi (14,6%) e Neoscona polyspinippes (13,8%), respectivamente. Já a menor coleta foi feita de Argiope versicolor com 90 (7,3%) amostras. A alta ocorrência de aranhas foi estudada em julho, com 187 amostras. A oscilação na temperatura pode afetar a diversidade de aranhas observadas e registradas no presente estudo com menor coleta feita em baixa temperatura. Além disso, a umidade também desempenha um grande papel na população e ocorrência de aranhas.

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The current research work aims to provide knowledge about the diversity of spiders' fauna and their occurrence throughout the year from District Charsadda Khyber Pakhtunkhwa, Pakistan. Research data were collected from March-2015 to January-2017 from seven different localities of Charsadda District by using the camera, bottle, plastic bags, paraffin films, field book and 70% of ethylene alcohol and 20% of glycerine were used as chemicals. By using special identification keys, spiders were differentiated into families, genera and species. During the study time, a total of 2734 specimens of spiders were collected belonging from 35 genera, 15 families and 44 species were identified. Salticidae was the dominant family according to genera studied plus spiders samples numbers collected with 10 genera and 616 species specimens count. The high occurrence of spiders was studied during July. The result of the current study also shows a reduction of spider's species in December due to lowering the temperature. The current study shows that Salticidae were the dominant family as capered to other species. The occurrence of spiders species greatly depends on changing the weather condition. The present study also shows great fluctuation in spider's occurrence with changing of hot climate to colder during the study duration. Moreover, the wet season plays a great role in spiders' population increase and growth.

O objetivo do presente trabalho de pesquisa é fornecer conhecimento sobre a diversidade da fauna de aranhas e sua ocorrência ao longo do ano no distrito Charsadda Khyber Pakhtunkhwa, Paquistão. Os dados da pesquisa foram coletados no período de março de 2015 a janeiro de 2017 em sete diferentes localidades do distrito de Charsadda por meio de câmera, garrafa, sacos plásticos, filmes de parafina, livro de campo, e 70% de álcool etílico e 20% de glicerina foram utilizados como produtos químicos. Usando chaves de identificação especiais, as aranhas foram diferenciadas em família, gênero e espécie. Durante o período de estudo foram coletados 2.734 espécimes de aranhas pertencentes a 35 gêneros, 15 famílias e 44 espécies. Salticidae foi a família dominante de acordo com os gêneros estudados mais o número de amostras de aranhas coletadas com 10 gêneros e contagem de 616 espécies. Altas ocorrências de aranhas foram estudadas durante o mês de julho. O resultado do estudo atual também mostra redução das espécies de aranhas no mês de dezembro devido à diminuição da temperatura. O estudo atual mostra que os Salticidae foram a família dominante como alcaparras para outras espécies. A ocorrência de espécies de aranhas depende muito da mudança das condições climáticas. O presente estudo também mostra grande flutuação na ocorrência de aranhas com a mudança do clima quente para mais frio durante a duração do estudo. Além disso, a estação chuvosa desempenha um grande papel no aumento e crescimento da população de aranhas.

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Habitat choice is fundamental for an animal foraging, defense, and reproduction. Ogre-faced spiders are known for their unusual morphology, natural history, and rarity. They are sit-and-wait predators that build net-like webs that are manipulated by spiders and thrown at their prey. Hunting behavior includes selecting microhabitats for web construction that reduces the likelihood of damage or entanglement in the substrate during prey capture. Therefore, we expect that Deinopis cf. cylindracea selects smooth surfaces to forage on. We observed D. cf. cylindracea associated with smooth trunks of Plinia cauliflora (Myrtaceae) in the natural environment and actively selecting smooth trunks over rough trunks or litter in controlled experiments. Such selection is likely to maximize the foraging strategy of launching the web towards the substrate. Aggregations had occurred more often in the 50 cm trunk closest to the ground, where the prey community is largest. During the day, this spider appears to choose sites where it can adopt a stick-like posture upon the vegetation near the ground. Hunting at night and resting cryptically during the day appears to be shaped by natural selection for the survival and reproduction of this spider species.

A escolha do habitat é fundamental para a busca de alimento, defesa e reprodução de um animal. As aranhas ogro são conhecidas por sua morfologia incomum, história natural e raridade. Elas são predadoras que ficam sentadas e esperam, construindo teias semelhantes a redes que são manipuladas por aranhas e lançadas em suas presas. O comportamento de caça inclui selecionar microhabitats para construção de teias que reduz a probabilidade de danos ou emaranhamento no substrato durante a captura da presa. Portanto, esperamos que Deinopis cf. cylindracea selecione superfícies lisas para forragear. Observamos D. cf. cylindracea associada a troncos lisos de Plinia cauliflora (Myrtaceae) no ambiente natural e selecionando ativamente troncos lisos em vez de troncos ásperos ou serapilheira em experimentos controlados. Essa seleção provavelmente maximiza a estratégia de forrageamento de lançar a teia em direção ao substrato. As agregações das aranhas ocorreram com mais frequência no tronco de 50 cm mais próximo do solo, onde a comunidade de presas é maior. Durante o dia, essa aranha parece escolher locais onde pode adotar uma postura semelhante a um graveto sobre a vegetação perto do chão. Caçar à noite e descansar enigmaticamente durante o dia parece ser moldado pela seleção natural para a sobrevivência e reprodução dessa espécie de aranha.

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Despite their large size and intimidating appearance, most mygalomorph spiders do not cause severe envenomation in Brazil. "Programa Estadual de Vigilância de Acidentes por Animais Peçonhentos da Secretaria de Estado da Saúde do Paraná", through the "Sistema de Notificação de Animais Peçonhentos" (SINAP), documents the occurrence of synanthropic species captured by the public and reported to municipal health services. In this study, we present a list of the mygalomorph species received by Secretaria de Saúde do Estado do Paraná (SESA) and their distribution across the state of Paraná, based on the SINAP reports. A total of 575 mygalomorph specimens were identified, originating from all 22 Regional Health Centers (RS) of SESA-PR. We identified species of four families: Actinopodidae (on species: Actinopus itapitocai); Dipluridae (1 species: Diplura catharinensis; Pycnothelidae (two species: Psalistopoides emanueli, and P. fulvimanus); and Theraphosidae (10 species in four genera: Acanthoscurria paulensis, Eupalaestrus campestratus, Grammostola actaeon, Pterinopelma longisternale, Tekoapora wacketi, Vitalius dubius, V. lucasae, V. paranaensis, V. sorocabae and V. vellutinus). Of the aforementioned species, Vitalius paranaensis has the widest distribution, occurring in all Regional Centers of Health except Paranaguá. The other most frequently collected species were Pterinopelma longisternale, Vitalius sorocabae, and Psalistopoides emanueli. In total, the 575 records resulted in only 12 accidents. The results highlight the broad distribution of some species; contributes to the identification of the main species encountered by the population and reported to SINAP in Paraná; and helps to bring attention to the low number of accidents caused by these large-sized spiders.(AU)

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Background: Members of the genus Cupiennius Simon, 1891 are categorized as wandering spiders and are part of the family Trechaleidae. The genomics and proteomics of Cupiennius spiders from North America remain uncharacterized. The present study explores for the first time molecular data from the endemic species Cupiennius chiapanensis Medina, 2006, and also presents new data for Cupiennius salei (Keyserling, 1878), both collected in southern Mexico. Methods: In total, 88 Cupiennius specimens were collected from southern Mexico and morphologically identified. DNA was extracted and the mitochondrial COI fragment was amplified. COI sequences were analyzed, and a phylogenetic tree was inferred for species from the Americas. Genetic diversity was analyzed using haplotype networks and gene distances. Venom was obtained from C. chiapanensis and C. salei by electrostimulation. The venom was separated by HPLC, visualized using SDS-PAGE, and quantified for use in toxicity bioassays in mice and insects. Results: Analysis of COI sequences from C. chiapanensis showed 94% identity with C. salei, while C. salei exhibited 94-97% identity with sequences from Central and South American conspecifics. The venom from C. chiapanensis exhibited toxic activity against crickets. Venoms from C. chiapanensis and C. salei caused death in Anastrepha obliqua flies. Analysis of venom fractions from C. salei and C. chiapanensis revealed molecular masses of a similar size as some previously reported toxins and neurotoxic components. We determined the amino acid sequences of ChiaTx1 and ChiaTx2, toxins that are reported here for the first time and which showed toxicity against mice and insects. Conclusion: Our work is the first to report COI-based DNA barcoding sequences from southern Mexican Cupiennius spiders. Compounds with toxic activity were identified in venom from both species.(AU)

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Background: Medications currently used to treat pain are frequently associated with serious adverse effects and rapid development of tolerance. Thus, there is a need to develop more effective, and safer medicines for the population. Blocking NMDA receptors (NMDAR) has shown to be a promising target for the development of new drugs. That statement is due to NMDAR activation and glutamate release in the spinal cord which affects chronic pain modulation. Therefore, the aim of this study was to evaluate the possible spinal antinociceptive activity of PnTx4(5-5) toxin. The peptide is purified from the venom of the spider P. nigriventer and its affinity for NMDAR and sodium channels Nav1.2-1.6 has already been established. Methods: We compared its effect and safety with MK-801 (NMDAR antagonist) and evaluated its influence on glutamate and reactive oxygen species (ROS) levels in CSF. PnTx4(5-5) was administered intrathecally in the Formalin test and co-administered with NMDA in the Spontaneous pain test. After three minutes of observation, mice cerebrospinal fluid was collected to measure glutamate and ROS levels. Results: The spider peptide inhibited nociception as post-treatment in the inflammatory phase of the Formalin test. Furthermore, it inhibited spontaneous nociception induced by NMDA, being more potent and effective than MK-801 in both models tested. A glutamate rise level in the CSF of mice was significantly reduced by the toxin, but ROS increase was not affected. The animals' motor skills were not affected by the tested doses of NMDAR inhibitors. Conclusion: In conclusion, the results suggest PnTx4(5-5) may mediate its antinociceptive effect in the spinal cord not only by inhibiting postsynaptic receptors but probably also by acting on autoreceptors. This effect does not affect the motricity of mice at the highest dose tested, which suggests that it has therapeutic potential and safety for use as a painkiller.

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Abstract Acacia mangium is a pioneer species with fast growth and frequently used in the recovery of degraded areas. The objectives were to evaluate insects and spiders, their ecological indices and interactions on A. mangium saplings in a tropical degraded area in recovering process. The experimental design was completely randomized with 24 replications, with treatments represented by the first and second years after A. mangium seedling planted. Numbers of leaves/branch, branches/sapling, and ground cover by A. mangium saplings, Hemiptera: Phenacoccus sp. and Pachycoris torridus; Hymenoptera: Tetragonisca angustula and Trigona spinipes, Brachymyrmex sp., Camponotus sp. and Cephalotes sp.; Blattodea: Nasutitermes sp. and Neuroptera: Chrysoperla sp.; abundance, species richness of pollinating insects, tending ants, and the abundance of Sternorrhyncha predators were greatest in the second year after planting. Numbers of Hemiptera: Aethalium reticulatum, Hymenoptera: Camponotus sp., Cephalotes sp., Polybia sp., T. angustula, T. spinipes, tending ants, pollinating insects, Sternorrhyncha predators and species richness of tending ants were highest on A. mangium saplings with greatest numbers of leaves or branches. The increase in the population of arthropods with ground cover by A. mangium saplings age increase indicates the positive impact by this plant on the recovery process of degraded areas.

Resumo Acacia mangium é uma espécie pioneira, de rápido crescimento e utilizada na recuperação de áreas degradadas. Os objetivos foram avaliar insetos e aranhas, seus índices ecológicos e interações com plantas de A. mangium em área tropical degradada em processo de recuperação. O delineamento experimental foi inteiramente casualizado com 24 repetições, com os tratamentos representados pelos primeiro e segundo anos após a plantio de A. mangium. Os números de folhas/galhos, galhos/plantas e cobertura do solo por plantas de A. mangium, de Hemiptera: Phenacoccus sp. e Pachycoris torridus; Hymenoptera: Tetragonisca angustula e Trigona spinipes, Brachymyrmex sp., Camponotus sp. e Cephalotes sp.; Blattodea: Nasutitermes sp. e Neuroptera: Chrysoperla sp.; a abundância, riqueza de espécies de insetos polinizadores, formigas cuidadoras e a abundância de predadores de Sternorrhyncha foram maiores no segundo ano após o plantio. Os números de Hemiptera: Aethalium reticulatum, Hymenoptera: Camponotus sp., Cephalotes sp., Polybia sp., T. angustula, T. spinipes, formigas cuidadoras, insetos polinizadores, predadores de Sternorrhyncha e a riqueza de espécies de formigas cuidadoras foram maiores em plantas de A. mangium com maior altura e número de folhas ou galhos. O aumento populacional de artrópodes e da cobertura do solo com o processo de envelhecimento das plantas de A. mangium indicam impacto positivo dessa planta na recuperação de áreas degradadas.

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Galling insects are abundant in nature, found in many ecosystems globally, with species attacking plants of economic importance. We studied the effects of free-feeding organisms on the abundance of galling insects on Caryocar brasiliense (Caryocaraceae) trees in the Brazilian Cerrado (Savanna). Percentage of defoliation and the number of phytophagous mites or number of phytophagous Hemiptera correlated negatively with percentage of galled leaves and the parasitoid Eurytoma sp. (Hymenoptera: Eurytomidae) adults, respectively. Percentage of galled leaves and the numbers of Eurytoma sp. adults and phytophagous mites correlated positively with spiders. Numbers of mites and Hemiptera phytophagous correlated positively with those of lady beetles and Sycophila sp. (Hymenoptera: Eurytomidae), respectively. The number of Ablerus magistretti Blanchard (Hymenoptera: Aphelinidae) adults correlated negatively with Sycophila sp. The number of Agistemus sp. (Acari: Stigmaeidae) correlated, negatively and positively, with those of lady beetles and phytophagous mites, respectively. Free-feeding herbivores affected the presence of galling insects (Hymenoptera) on C. brasiliense trees, competing for food and space. The same was observed between two parasitoids of Eurytoma sp. galling insect, which can reduce the natural biological control of this pest.

Insetos galhadores são abundantes na natureza, encontrados em muitos ecossistemas globalmente, com espécies atacando plantas de importância econômica. Os efeitos de herbívoros de alimentação livre na abundância de insetos galhadores em árvores de Caryocar brasiliense (Caryocaraceae) no Cerrado brasileiro (Savana) foram estudados. A porcentagem de desfolha e o número de ácaros fitófagos ou de Hemiptera fitófagos correlacionaram-se, negativamente, com a percentagem de folhas galhadas e de adultos do parasitoide Eurytoma sp. (Hymenoptera: Eurytomidae), respectivamente. Porcentagem de folhas galhadas e o número de Eurytoma sp. adultos e ácaros fitófagos correlacionaram-se, positivamente, com o de aranhas. Os números de ácaros e fitófagos Hemiptera correlacionaram-se, positivamente, com os de joaninhas e Sycophila sp. (Hymenoptera: Eurytomidae), respectivamente. O número de adultos de Ablerus magistretti Blanchard (Hymenoptera: Aphelinidae) correlacionou-se, negativamente, com Sycophila sp. O número de Agistemus sp. (Acari: Stigmaeidae) correlacionou-se, negativa e positivamente, com os de joaninhas e ácaros fitófagos, respectivamente. Herbívoros de alimentação livre afetaram a presença de insetos galhadores (Hymenoptera) em árvores de C. brasiliense, competindo por alimento e espaço. O mesmo foi observado entre dois parasitoides de Eurytoma sp., o que pode reduzir o controle biológico natural dessa praga.

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Background: Loxoscelism refers to a set of clinical manifestations caused by the bite of spiders from the Loxosceles genus. The classic clinical symptoms are characterized by an intense inflammatory reaction at the bite site followed by local necrosis and can be classified as cutaneous loxoscelism. This cutaneous form presents difficult healing, and the proposed treatments are not specific or effective. This study aimed to evaluate the protective effect of mesenchymal stromal cells-derived secretome on dermonecrosis induced by Loxosceles intermedia spider venom in rabbits. Methods: Sixteen rabbits were distributed into four groups (n = 4). Except for group 1 (G1), which received only PBS, the other three groups (G2, G3, and G4) were initially challenged with 10 μg of L. intermedia venom, diluted in 100 μL of NaCl 0.9%, by intradermic injection in the interscapular region. Thirty minutes after the challenge all groups were treated with secretome, except for group 2. Group 1 (G1-control group) received intradermal injection (ID) of 60 μg of secretome in 0.15 M PBS; Group 2 (G2) received 0.9% NaCl via ID; Group 3 (G3) received 60 μg of secretome, via ID and Group 4 (G4), received 60 μg of secretome by intravenous route. Rabbits were evaluated daily and after 15 days were euthanized, necropsied and skin samples around the necrotic lesions were collected for histological analysis. Results: Rabbits of G1 did not present edema, erythema, hemorrhagic halo, or necrosis. In animals from G2, G3, and G4, edema appeared after 6h. However, minor edema was observed in the animals of G2 and G3. Hemorrhagic halo was observed in animals, six hours and three days after, on G2, G3, and G4. Macroscopically, in G4, only one animal out of four had a lesion that evolved into a dermonecrotic wound. No changes were observed in the skin of the animals of G1, by microscopic evaluation. All animals challenged with L. intermedia venom showed similar alterations, such as necrosis and heterophilic infiltration. However, animals from G4 showed fibroblast activation, early development of connective tissue, neovascularization, and tissue re-epithelialization, indicating a more prominent healing process. Conclusion: These results suggest that secretome from mesenchymal stromal cells cultured in a xeno-free and human component-free culture media can be promising to treat dermonecrosis caused after Loxosceles spiders bite envenoming.(AU)

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Abstract Acacia mangium is a pioneer species with fast growth and frequently used in the recovery of degraded areas. The objectives were to evaluate insects and spiders, their ecological indices and interactions on A. mangium saplings in a tropical degraded area in recovering process. The experimental design was completely randomized with 24 replications, with treatments represented by the first and second years after A. mangium seedling planted. Numbers of leaves/branch, branches/sapling, and ground cover by A. mangium saplings, Hemiptera: Phenacoccus sp. and Pachycoris torridus; Hymenoptera: Tetragonisca angustula and Trigona spinipes, Brachymyrmex sp., Camponotus sp. and Cephalotes sp.; Blattodea: Nasutitermes sp. and Neuroptera: Chrysoperla sp.; abundance, species richness of pollinating insects, tending ants, and the abundance of Sternorrhyncha predators were greatest in the second year after planting. Numbers of Hemiptera: Aethalium reticulatum, Hymenoptera: Camponotus sp., Cephalotes sp., Polybia sp., T. angustula, T. spinipes, tending ants, pollinating insects, Sternorrhyncha predators and species richness of tending ants were highest on A. mangium saplings with greatest numbers of leaves or branches. The increase in the population of arthropods with ground cover by A. mangium saplings age increase indicates the positive impact by this plant on the recovery process of degraded areas.

Resumo Acacia mangium é uma espécie pioneira, de rápido crescimento e utilizada na recuperação de áreas degradadas. Os objetivos foram avaliar insetos e aranhas, seus índices ecológicos e interações com plantas de A. mangium em área tropical degradada em processo de recuperação. O delineamento experimental foi inteiramente casualizado com 24 repetições, com os tratamentos representados pelos primeiro e segundo anos após a plantio de A. mangium. Os números de folhas/galhos, galhos/plantas e cobertura do solo por plantas de A. mangium, de Hemiptera: Phenacoccus sp. e Pachycoris torridus; Hymenoptera: Tetragonisca angustula e Trigona spinipes, Brachymyrmex sp., Camponotus sp. e Cephalotes sp.; Blattodea: Nasutitermes sp. e Neuroptera: Chrysoperla sp.; a abundância, riqueza de espécies de insetos polinizadores, formigas cuidadoras e a abundância de predadores de Sternorrhyncha foram maiores no segundo ano após o plantio. Os números de Hemiptera: Aethalium reticulatum, Hymenoptera: Camponotus sp., Cephalotes sp., Polybia sp., T. angustula, T. spinipes, formigas cuidadoras, insetos polinizadores, predadores de Sternorrhyncha e a riqueza de espécies de formigas cuidadoras foram maiores em plantas de A. mangium com maior altura e número de folhas ou galhos. O aumento populacional de artrópodes e da cobertura do solo com o processo de envelhecimento das plantas de A. mangium indicam impacto positivo dessa planta na recuperação de áreas degradadas.

Resumo

Abstract Caryocar brasiliense Camb. (Malpighiales: Caryocaraceae) trees are widely distributed throughout the Cerrado ecosystem. The fruits of C. brasiliense trees are used by humans for food and as the main income source in many communities. C. brasiliense conservation is seriously threatened due to habitat loss caused by the land-use change. Sucking insects constitute an important ecological driver that potentially impact C. brasiliense survival in degraded environments. In addition, insects sampling methodologies for application in studies related to the conservation of C. brasiliense are poorly developed. In this study, sucking insects (Hemiptera) and their predators were recorded in three vertical strata of Caryocar brasiliense canopies. The distribution of sucking species showed vertical stratification along the canopy structure of C. brasiliense. The basal part of the canopy had the highest numbers of sucking insects Aphis gossypii (Glover 1877) (Hemiptera: Aphididae) and Bemisia tabaci (Genn. 1889) (Hemiptera: Aleyrodidae), and their predators Chrysoperla sp. (Neuroptera: Chrysopidae), spiders (Araneae), and Zelus armillatus (Lep. & Servi., 1825) (Hemiptera: Reduviidae). Predators' distribution follows the resource availability and preferred C. brasiliense tree parts with a higher abundance of prey.

Resumo Caryocar brasiliense Camb. (Malpighiales: Caryocaraceae) é amplamente distribuído por todo o ecossistema de cerrado. Os frutos de C. brasiliense são utilizados na alimentação humana e constitui uma importante fonte de renda para muitas comunidades. A perda de habitat provocada pelas mudanças de uso da terra coloca em risco a conservação de C. brasiliense. Insetos sugadores constituem um importante fator ecológico que, potencialmente, afeta o fitness de C. brasiliense em ambientes degradados. Além disso, as metodologias de amostragem de insetos para aplicação em estudos relacionados à conservação de C. brasiliense são pouco desenvolvidas. Neste estudo, o número de insetos sugadores (Hemiptera) e seus predadores foram avaliados em três estratos verticais do dossel de C. brasiliense. A distribuição das espécies sugadoras apresentou estratificação vertical ao longo da estrutura do dossel. O estrato basal do dossel apresentou o maior número de insetos sugadores Aphis gossypii (Glover 1877) (Hemiptera: Aphididae) e Bemisia tabaci (Genn. 1889) (Hemiptera: Aleyrodidae), e seus predadores Chrysoperla sp. (Neuroptera: Chrysopidae), aranhas (Araneae) e Zelus armillatus (Lep. & Servi., 1825) (Hemiptera: Reduviidae). Os predadores distribuíram-se de acordo com a disponibilidade de recursos, ocorrendo em maior número nas partes do dossel com maior abundância de suas presas.

Resumo

Forest restoration is mainly based on plant-soil relationships and plant species with economic potential, but those between insects and other arthropods are also important to this reestablishment. The objective was to evaluate, during 24 months, the relationships between tending ants, Hemiptera phytophagous, predators and their distribution pattern (aggregated, random or uniform). The arthropods were sampled, stored and identified and their relationships and distribution patterns calculated with the BioDiversity-Pro software. The number of tending ants and phytophagous Hemiptera, Brachymyrmex sp. and Aethalion reticulatum, Cephalotes and Aleyrodidae were positively correlated. Tending ants were negatively correlated with Sternorrhyncha predators on A. auriculiformis saplings. The distribution of arthropods was aggregated, except for Teudis sp. and Cephalocoema sp., with a random pattern. The herbivores Stereoma anchoralis, Aethalion reticulatum and Tetragonisca angustula and the predators Brachymyrmex sp. and Dolichopodidae were the most abundant arthropods. The relationships between the arthropods studied on A. auriculiformis indicate that this plant, even introduced, is suitable for programs to recover degraded areas in the savannah.

A restauração florestal é baseada nas relações planta-solo e espécies vegetais com potencial econômico, mas aquelas entre insetos e outros artópodes são, também, importantes para esse processo. O objetivo foi avaliar as relações entre formigas, fitófagos Hemiptera e predadores e a distribuição (agregada, aleatória ou regular) de artrópodes, por 24 meses, em mudas de Acacia auriculiformis utilizadas na recuperação de áreas degradadas. Os artrópodes foram amostrados, armazenados e identificados e suas relações e padrões de distribuição calculados com o software BioDiversity-Pro. Os números de formigas cuidadoras se correlacionaram, positivamente, com os dos Hemiptera fitófagos Aethalion reticulatum, Brachymyrmex sp. e Cephalotes e Aleyrodidae. Insetos cuidadores de Hemiptera foram, negativamente, correlacionados com predadores Sternorrhyncha em plantas de A. auriculiformis. A distribuição dos artrópodes foi agregada, exceto Teudis sp. e Cephalocoema sp., com padrão aleatório. Aethalion reticulatum, Stereoma anchoralis e Tetragonisca angustula foram os herbívoros e Brachymyrmex sp. e Dolichopodidae os predadores mais abundantes. As relações entre os artrópodes estudados em A. auriculiformis indicam que esta planta, mesmo introduzida, é adequada para programas de recuperação de áreas degradadas no cerrado.

Resumo

Terminalia argentea tree, native to Brazil, is widely used in landscaping, recovering degraded areas, its wood, coal production, and the bark or leaf extracts has medicinal use. Despite of its importance, the arthropod fauna associated to this plant and its interspecific relationships still needs further studies. The objectives of this study were to evaluate the arthropods, their ecological indices and the distribution in the leaf faces on T. argentea saplings. The numbers of phytophagous insects (e.g., Cephalocoema sp.), pollinators (e.g., Tetragonisca angustula), and natural enemies (e.g., Oxyopidae), and their ecological indices (e.g., species richness), were higher on the adaxial leaf faces on T. argentea saplings. Aggregated distribution of phytophagous insects (e.g., Aphis spiraecola), pollinators (e.g., Trigona spinipes), and natural enemies (e.g., Camponotus sp.) on T. argentea saplings was observed. Abundance, diversity, and species richness of natural enemies correlated, positively, with those of phytophagous and pollinators insects. Predators and tending ants followed their prey and sucking insects, respectively. Tending ants protected sucking insects against predators, and reduced chewing insects. The high number of Cephalocoema sp. on T. argentea saplings is a problem, because this insect can feed on leaves of this plant, but its preference for the adaxial leaf face favors its control. The aggregation behavior of arthropods on T. argentea saplings favors the control of potential pests of this plant. There seems to be competition between tending ants for space and food resources on T. argentea saplings.

Terminalia argentea, árvore nativa do Brasil, é muito utilizada no paisagismo, na recuperação de áreas degradadas, sua madeira na produção de carvão e o extrato da casca ou das folhas tem uso medicinal. Apesar de sua importância, a fauna de artrópodes associada a esta planta e suas relações interespecíficas ainda carecem de estudos mais aprofundados. Os objetivos deste estudo foram avaliar os artrópodes, seus índices ecológicos e a distribuição nas faces foliares de mudas de T. argentea. O número de insetos fitófagos (ex.: Cephalocoema sp.), polinizadores (ex.: Tetragonisca angustula), e inimigos naturais (ex.: Oxyopidae), e seus índices ecológicos (ex.: riqueza de espécies), foram maiores nas faces adaxiais das folhas das mudas de T. argentea. Foi observada uma distribuição agregada de insetos fitófagos (ex.: Aphis spiraecola), polinizadores (ex.: Trigona spinipes) e inimigos naturais (ex.: Camponotus sp.) em mudas de T. argentea. A abundância, diversidade e riqueza de espécies de inimigos naturais correlacionaram-se, positivamente, com as de insetos fitófagos e polinizadores. Os predadores e as formigas cuidadoras seguiram as suas presas e os insetos sugadores, respectivamente. As formigas cuidadoras protegeram os insetos sugadores contra os predadores e reduziram os insetos mastigadores. O elevado número de Cephalocoema sp. em mudas de T. argentea é um problema, pois esse inseto pode se alimentar de folhas dessa planta, mas sua preferência pela face adaxial da folha favorece seu controle. O comportamento de agregação de artrópodes em mudas de T. argentea favorece o controle de potenciais pragas dessa planta. Parece haver competição entre as formigas cuidadoras por espaço e recursos alimentares nas mudas de T. argentea.

Resumo

Abstract Caryocar brasiliense Camb. (Malpighiales: Caryocaraceae) trees are widely distributed throughout the Cerrado ecosystem. The fruits of C. brasiliense trees are used by humans for food and as the main income source in many communities. C. brasiliense conservation is seriously threatened due to habitat loss caused by the land-use change. Sucking insects constitute an important ecological driver that potentially impact C. brasiliense survival in degraded environments. In addition, insects sampling methodologies for application in studies related to the conservation of C. brasiliense are poorly developed. In this study, sucking insects (Hemiptera) and their predators were recorded in three vertical strata of Caryocar brasiliense canopies. The distribution of sucking species showed vertical stratification along the canopy structure of C. brasiliense. The basal part of the canopy had the highest numbers of sucking insects Aphis gossypii (Glover 1877) (Hemiptera: Aphididae) and Bemisia tabaci (Genn. 1889) (Hemiptera: Aleyrodidae), and their predators Chrysoperla sp. (Neuroptera: Chrysopidae), spiders (Araneae), and Zelus armillatus (Lep. & Servi., 1825) (Hemiptera: Reduviidae). Predators' distribution follows the resource availability and preferred C. brasiliense tree parts with a higher abundance of prey.

Resumo Caryocar brasiliense Camb. (Malpighiales: Caryocaraceae) é amplamente distribuído por todo o ecossistema de cerrado. Os frutos de C. brasiliense são utilizados na alimentação humana e constitui uma importante fonte de renda para muitas comunidades. A perda de habitat provocada pelas mudanças de uso da terra coloca em risco a conservação de C. brasiliense. Insetos sugadores constituem um importante fator ecológico que, potencialmente, afeta o fitness de C. brasiliense em ambientes degradados. Além disso, as metodologias de amostragem de insetos para aplicação em estudos relacionados à conservação de C. brasiliense são pouco desenvolvidas. Neste estudo, o número de insetos sugadores (Hemiptera) e seus predadores foram avaliados em três estratos verticais do dossel de C. brasiliense. A distribuição das espécies sugadoras apresentou estratificação vertical ao longo da estrutura do dossel. O estrato basal do dossel apresentou o maior número de insetos sugadores Aphis gossypii (Glover 1877) (Hemiptera: Aphididae) e Bemisia tabaci (Genn. 1889) (Hemiptera: Aleyrodidae), e seus predadores Chrysoperla sp. (Neuroptera: Chrysopidae), aranhas (Araneae) e Zelus armillatus (Lep. & Servi., 1825) (Hemiptera: Reduviidae). Os predadores distribuíram-se de acordo com a disponibilidade de recursos, ocorrendo em maior número nas partes do dossel com maior abundância de suas presas.

Resumo

Salticidae is the most diverse family of Araneae and in Brazil, there are 667 species. Among these species, five are synanthropic exotics: Plexippus paykulli (Audouin, 1826), Hasarius adansoni (Audouin, 1826), Menemerus bivittatus (Dufour, 1831), M. nigli Wesolowska & Freudenschuss, 2012 and Thyene coccineovittata (Simon, 1886). To understand the current distribution of these species in Brazil, seven collections of 643 lots were examined from seven Brazilian zoological collections. The synanthropic exotic species with the highest records were Plexippus paykulli, Menemerus bivittatus, and Hasarius adansoni, generally collected and associated with human dwellings and buildings. They are present in all regions (North, Northeast, Midwest, and South macro-regions), with the largest region, in all regions of the country in 22 states and 98 municipalities, followed by Hasarius adansoni in 17 states and 88 municipalities, Menemerus bivittatus in 19 states and 68 municipalities. Menemerus nigli and Thyene coccineovittata are from recent introductions that occurred in the city of Rio de Janeiro, Rio de Janeiro, Brazil.(AU)

Salticidae é a família mais diversa de Araneae e no Brasil ocorrem 667 espécies, dentre elas cinco são exóticas sinantrópicas: Plexippus paykulli (Audouin, 1826), Menemerus bivittatus (Dufour, 1831), Hasarius adansoni (Audouin, 1826), Menemerus nigli Wesolowska & Freudenschuss, 2012 e Thyene coccineovittata (Simon, 1886). Foram examinados 643 lotes destas cinco espécies no Brasil, depositados em sete coleções zoológicas brasileiras. As espécies exóticas sinantrópicas com maior número de registros foram Plexippus paykulli, Hasarius adansoni e Menemerus bivittatus, na maioria dos casos coletadas associadas a habitações e edificações humanas. Elas estão presentes em todas as macrorregiões do país (Norte, Nordeste, Centro-Oeste, Sudeste e Sul), sendo P. paykulli a que possui a maior distribuição, ocorrendo em 22 estados e 98 municípios, seguido de H. adansoni em 17 estados e 88 municípios e M. bivittatus em 19 estados e 68 municípios. Menemerus nigli e Thyene coccineovittata, são introduções recentes, ocorrendo apenas na cidade do Rio de Janeiro, Rio de Janeiro, Brasil.(AU)

Resumo

In this paper a new species of Diphya Nicolet, 1849, D. napo sp. nov. is described based on males and females from Ecuador. The female of Diphya bicolor Vellard, 1926 is described and illustrated for the first time and new records are presented. Oarces ornatus Mello-Leitão, 1935 and Azilia eximia (Mello-Leitão, 1940) are synonymized with D. bicolor, being A. eximia removed from the synonym of Azilia Keyserling, 1881 and being Cardimia Mello-Leitão, 1940 considered synonym of Diphya.(AU)

Neste artigo uma nova espécie de Diphya Nicolet, 1849, D. napo sp. nov. é descrita com base em machos e fêmeas do Equador. A fêmea de Diphya bicolor Vellard, 1926 é descrita e ilustrada pela primeira vez e registros novos são apresentados. Oarces ornatus Mello-Leitão, 1935 e Azilia eximia (Mello-Leitão, 1940) são sinonimizadas com D. bicolor, sendo A. eximia retirada da sinonímia de Azilia Keyserling, 1881 e Cardimia Mello-Leitão, 1940 é considerado sinônimo de Diphya.(AU)

Resumo

Brazil is the country with the most diverse tarantula (Theraphosidae) fauna, having 215 described species. Vitalius Lucas, Silva Júnior & Bertani, 1993 is one of the most diverse and common genera in Southern, Southeastern and Central-West regions of Brazil with ten described species. Individuals of Vitalius species are large and widespread in areas of the Brazilian Atlantic Forest. A single species is known to occur in areas of Cerrado vegetation. Herein, two new species are described from areas of restinga, coastal areas typically with low vegetation and sandy soil, in the coast of the states of Rio de Janeiro (Vitalius restinga sp. nov.), Bahia and Sergipe (Vitalius sapiranga sp. nov.). Males and females of these two new species have a much longer than wide sternum. Males have a short apical keel in the male palpal bulb. The two species can be distinguished by embolus width, slender in V. restinga sp. nov. and thicker in V. sapiranga sp. nov. Females can be distinguished by the spermathecae shape, slender in V. restinga sp. nov. and broader in V. sapiranga sp. nov. These are the first known theraphosids endemic to Brazilian Atlantic Coast restingas. Biological data indicate V. sapiranga sp. nov. and maybe V. restinga sp. nov. commonly use bromeliads as retreats. It is herein hypothesized they are sister species occupying similar habitats in Brazilian coast, but separated by ca. 1,000 kilometers.

Resumo

Background: Phonotimpus pennimani (Araneae, Phrurolithidae) is a small-sized (3-5 mm) spider endemic to the Tacaná volcano in Chiapas, Mexico, where it is found in soil litter of cloud forests and coffee plantations. Its venom composition has so far not been investigated, partly because it is not a species of medical significance. However, it does have an important impact on the arthropod populations of its natural habitat. Methods: Specimens were collected in Southeastern Mexico (Chiapas) and identified taxonomically by morphological characteristics. A partial sequence from the mitochondrial gene coxI was amplified. Sequencing on the Illumina platform of a transcriptome library constructed from 12 adult specimens revealed 25 toxin or toxinlike genes. Transcripts were validated (RT-qPCR) by assessing the differential expression of the toxin-like PpenTox1 transcript and normalising with housekeeping genes. Results: Analysis of the coxI-gene revealed a similarity to other species of the family Phrurolithidae. Transcriptome analysis also revealed similarity with venom components of species from the families Ctenidae, Lycosidae, and Sicariidae. Expression of the toxinlike PpenTox1 gene was different for each developmental stage (juvenile or adult) and also for both sexes (female or male). Additionally, a partial sequence was obtained for the toxin-like PpenTox1 from DNA. Conclusion: Data from the amplification of the mitochondrial coxI gene confirmed that P. pennimani belongs to the family Phrurolithidae. New genes and transcripts coding for venom components were identified.(AU)

Resumo

The insect group is one of the most diverse on the planet and due to habitat degradation, many of these species are becoming extinct, leaving a lack of information on the basic biology of each one. In this study, previously unseen information about nesting biology is revealed in Auplopus subaurarius trap nests. This is a solitary ectoparasitoid spider wasp that nests in preexisting cavities. We used a trap-nesting methodology to sample A. subaurarius in two different sampling periods (2017/2018 and 2020/2021) in three types of environment (forest, grassland and Eucalyptus plantation). In our study, the A. subaurarius nest building was more frequent during the hottest months of the year (November to March), with its highest abundance found within natural forest areas and in Eucalyptus plantation than in grassland areas. In addition, the species had two development times: a short one (three months) and a delayed one (up to one year). Moreover, females were larger than males (weight and size) and the species' sex ratio had a tendency toward female production. Auplopus subaurarius presented seven natural enemy species: Ceyxia longispina, Caenochrysis crotonis, Photochryptus sp.1, Photochryptus sp.2, Messatoporus sp., Ephuta icema and Sphaeropthalma sp. We emphasize the importance of wooded environments to maintain the A. subaurarius populations and their associated interactors, both spiders and natural enemies, as these environments can provide better life conditions than grassland areas. Furthermore, other solitary wasps that may have the same lifestyle of A. subaurarius can also be improved by natural forest conservation and by good silviculture plantation planning, which should consider ecological aspects of Atlantic Forest landscapes.

O grupo dos insetos é um dos mais diversos do planeta e devido à degradação dos habitats, muitas dessas espécies estão sendo extintas, deixando uma carência de informações sobre a biologia básica de cada uma. Neste estudo, informações inéditas sobre a biologia de nidificação em ninhos-armadilha de Auplopus subaurarius são reveladas. Essa espécie trata-se de uma vespa solitária ectoparasitóide de aranhas, que nidifica em cavidades preexistentes. Utilizamos a metodologia de ninhos-armadilha para amostrar A. subaurarius em dois períodos amostrais diferentes (2017/2018 e 2020/2021), em três tipos de ambientes (floresta, campo e plantação de Eucalyptus). Em nosso estudo, a nidificação de A. subaurarius foi mais frequente nos meses mais quentes do ano (Novembro a Março), com maior abundância encontrada em áreas de floresta nativa e em plantações de Eucalyptus comparados à áreas de campo. Além disso, a espécie apresentou dois tempos de desenvolvimento, um curto (três meses) e um longo (até um ano). Além disso, as fêmeas foram maiores que os machos (peso e tamanho) e a razão sexual da espécie apresentou tendência à produção de fêmeas. Auplopus subaurarius apresentou sete espécies de inimigos naturais: Ceyxia longispina, Caenochrysis crotonis, Photochryptus sp.1, Photochryptus sp.2, Messatoporus sp., Ephuta icema e Sphaeropthalma sp. Ressaltamos a importância de ambientes arborizados para manutenção das populações de A. subaurarius e seus interagentes associados, tanto aranhas quanto inimigos naturais, uma vez que estes ambientes podem apresentar melhores condições de vida comparados à áreas campestres. Além disso, outras vespas solitárias que podem ter o mesmo estilo de vida de A. subaurarius, também podem ser afetadas positivamente pela conservação das florestas naturais e por um bom planejamento de plantações de silvicultura, as quais devem considerar os aspectos ecológicos das paisagens da Mata Atlântica.