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1.
Zootaxa ; 5414(1): 1-83, 2024 Feb 19.
Artículo en Inglés | MEDLINE | ID: mdl-38480217

RESUMEN

The genus Arctosa C.L. Koch is redescribed and diagnosed. Seven new species are described, four of them based on both sexes (A. conflicta sp. nov., A. costenola sp. nov., A. jibarosa sp. nov. and A. villa sp. nov.), two only on females (A. ayaymama sp. nov. and A. mineira sp. nov.), and one only on the male (A. pacaya sp. nov.). We also propose the transference of Arctosa humicola (Bertkau, 1880) and Arctosa fusca (Keyserling, 1877) to Trochosa C.L. Koch, 1847, and the new synonymy of Arctosa inconspicua (Bryant, 1948) with Trochosa humicola (Bertkau, 1880) comb. nov. Besides, Arctosa andina (Chamberlin, 1916) and Arctosa pugil (Bertkau, 1880) are transferred to Hogna Simon, 1885, and Arctosa aussereri (Keyserling, 1877) to Prolycosides Mello-Leito, 1942. Additionally, eight lycosid species are synonymized with Prolycosides aussereri: Schizocosa proletaria (Tullgren, 1905); Arctosa workmani (Strand, 1909); Hogna planithoracis (Mello-Leito, 1938); Hogna variolosa (Mello-Leito, 1941); Megarctosa melanostoma (Mello-Leito, 1941); Hippasosa huachoi (Mello-Leito, 1942); Pirata abalosi (Mello-Leito, 1942); and Pirata soukupi (Mello-Leito, 1942). We also transfer Trochosa tenebrosa Keyserling, 1877 to Arctosa. The males of Arctosa tenebrosa (Keyserling, 1877) comb. nov. and Trochosa humicola (Bertkau, 1880) comb. nov. are described for the first time.


Asunto(s)
Animales Venenosos , Arañas , Femenino , Masculino , Animales , Distribución Animal
2.
Zootaxa ; 5411(1): 1-71, 2024 Feb 16.
Artículo en Inglés | MEDLINE | ID: mdl-38480220

RESUMEN

This paper presents a taxonomic revision of the genus Tullgrenella Mello-Leito, 1941. Four new species are described: Tullgrenella aisenbergae Marta, sp. nov. (Brazil) (), T. legalissima Marta & Hagopin sp. nov. (Uruguay) (), T. galianoae Marta, sp. nov. (Brazil) () and T. sciosciae Marta & Bustamante sp. nov. (Brazil) (). The males of T. corrugata Galiano, 1981 and T. peniaflorensis Galiano, 1970, and the female of T. selenita Galiano, 1970 are described for the first time. An updated diagnosis for the genus is provided based on the detailed comparative morphological studies. In addition, we present a proposal and discussion about the species groups of Tullgrenella based on the putative synapomorphies as well as the updated distribution of the genus in South America.


Asunto(s)
Arañas , Masculino , Femenino , Animales , Distribución Animal
3.
Zootaxa ; 5296(4): 582-588, 2023 May 30.
Artículo en Inglés | MEDLINE | ID: mdl-37518424

RESUMEN

A new species, Strotarchus chamevazquezi sp. nov., is described based on both sexes from Department Francisco Morazán, Honduras. A detailed description, diagnosis, photographs, and distribution map of the new species are given. This is the first species of this genus recorded from Honduras.

5.
An Acad Bras Cienc ; 95(1): e20201937, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37222359

RESUMEN

The Atlantic Forest is known for its richness and diversity of species. Nonetheless, the diversity of millipedes in the biome is still poorly known. In this work, the distribution and the faunal composition of millipedes of the family Spirostreptidae Brandt, 1833 (order Spirostreptida) from the Atlantic Forest are provided. A total of 159 occurrence points were compiled, and 59 species in 17 genera were listed. Gymnostreptus Brölemann, 1902 was recovered as the richest genus in the Atlantic Forest with 14 species and one subspecies. The species Plusioporus setiger (Brölemann, 1902) presented the highest number of records, with 22 occurrence points in at least 20 municipalities. A total of 35 species were recorded from only one municipality. Considering all the threats on the biome, this paper is important for our understanding of the Brazilian millipede fauna and can be useful to determine places that require valuations for collecting efforts and conservation policies.


Asunto(s)
Artrópodos , Bosques , Animales , Brasil , Ecosistema , Registros
6.
Zootaxa ; 5228(4): 351-393, 2023 Jan 16.
Artículo en Inglés | MEDLINE | ID: mdl-37044647

RESUMEN

The new genus Tropicosa is proposed based on species of some controversial Neotropical genera of lycosids. These spiders present a longitudinal dark stripe over the sternum in both sexes, median apophysis sinuous, tegular lobe evidently sclerotized and the epigyne with median septum anteriorly expanded and with a parallel, triangular hood. We transfer Alopecosa moesta (Holmberg), Schizocosa chelifasciata (Mello-Leitão) and Lycosa thorelli (Keyserling) to Tropicosa gen. nov. and describe one new species, Tropicosa baguala sp. nov. Likewise, Arctosa bogotensis (Keyserling) is synonymized with Tropicosa thorelli (Keyserling) comb. nov., and Lycosa langei Mello-Leitão with T. chelifasciata (Mello-Leitão) comb. nov. based on examined types. All the four species proposed as members of Tropicosa gen. nov. have South American distribution.


Asunto(s)
Arañas , Femenino , Masculino , Animales , Distribución Animal
7.
Biota Neotrop. (Online, Ed. ingl.) ; 23(3): e20231521, 2023. graf
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1513747

RESUMEN

Abstract Somatic characters are shared by many Chelodesmidae groups, and generic placement and species identifications traditionally have been based on gonopodal morphology. Female genitalic characters have been largely neglected and are rarely photographed or illustrated. This is rather unfortunate as the morphology of female genitalia presents important characters and may be decisive for developing a more robust family classification. We describe the heretofore unknown female of Sandalodesmus araujoi (Schubart, 1946), previously known only from the male holotype collected in São Paulo, Brazil in December 1943; discuss the utility of female genitalic characters for species delineation in Sandalodesmus; and report the first case of a mass occurrence in the Chelodesmidae. While an attempt at a formal diagnosis of Sandalodesmus females based on genitalic characters is premature, the vulvar morphology of the three taxa examined in this study suggests that female genitalia are species-specific. Some characters (i.e., asymmetric valves, presence of digitiform projections and reduction of setae on the internal basal portion of the valves) are constant between the species, suggesting utility for generic-level delineation. Mass occurrences of millipedes are typically unpredictable and likely related to variations in environmental conditions and/or anthropogenic modifications of natural habitats. Although the mass occurrence of S. araujoi reported herein was only observed once, the event coincides with the mating period of millipedes during the rainy season in Brazil. On the other hand, the region where the species was found has been the target of intense urban development, including replacement of natural habitats with residential areas, which may have influenced its population dynamics.


Resumo Os caracteres somáticos são compartilhados por muitos grupos de Chelodesmidae, e o posicionamento genérico e as identificações de espécies tradicionalmente têm sido baseadas na morfologia do gonópodo. Carateres genitais das fêmeas foram amplamente negligenciados e raramente são fotografados ou ilustrados. Isso é lamentável, pois a morfologia da genitália feminina apresenta características importantes e pode ser decisiva para o desenvolvimento de uma classificação mais robusta. Neste trabalho, descrevemos a até então desconhecida fêmea de Sandalodesmus araujoi (Schubart, 1946), anteriormente conhecida apenas pelo holótipo macho coletado em São Paulo, Brasil, em dezembro de 1943; discutimos a utilidade de caracteres genitais femininos para delineamento de espécies em Sandalodesmus; e relatamos o primeiro caso de ocorrência em massa para Chelodesmidae. Embora uma tentativa de diagnose formal para fêmeas de Sandalodesmus com base em caracteres genitais seja prematura, a morfologia vulvar dos três táxons examinados neste estudo, sugere que a genitália feminina é espécie-específica. Alguns caracteres (e.g. válvulas assimétricas, presença de projeções digitiformes e redução de cerdas na margem interna das válvas) são constantes entre as espécies do gênero, sugerindo utilidade para delineamento em nível genérico. Ocorrências em massa de milípedes são tipicamente imprevisíveis e provavelmente relacionadas a variações nas condições ambientais e/ou modificações antropogênicas de habitats naturais. Embora a ocorrência em massa de S. araujoi aqui relatada tenha sido observada apenas uma vez, o evento coincide com o período de reprodução dos milípedes durante a estação chuvosa no Brasil. Por outro lado, a região onde a espécie foi encontrada tem sido alvo de intenso desenvolvimento urbano, incluindo substituição de habitats naturais por áreas residenciais, o que pode ter influenciado sua dinâmica populacional.

8.
Zootaxa ; 5328(1): 1-66, 2023 Aug 11.
Artículo en Inglés | MEDLINE | ID: mdl-38220887

RESUMEN

Tenedos O. Pickard-Cambridge, 1897, is the most diverse arrangement of Neotropical zodariids. The genus is composed by several species group, which only the barronus group is formally recognized. However, several groups remain uncharacterized despite being easily distinguishable by the distinctive sexual morphology. We formally proposed a second species group in Tenedos, the trilobatus group, including the known species Tenedos trilobatus Jocqu & Baert, 2002 from Colombia and T. figaro Jocqu & Baert, 2002 from Ecuador, whose type specimens are redescribed herein. Seven new species of the trilobatus group from Colombia are proposed based on both sexes: T. anchicaya sp. n. (), T. chiribiquete sp. n. (), T. cumbre sp. n. (), T. gabi sp. n. (), T. quimbaya sp. n. (), T. huila sp. n. (), T. valle sp. n. (). New data on the distribution range of Tenedos trilobatus in Colombia are included. We further provide distribution maps and an identification key for all species of the group. Morphological remarks of the new group and a comparison of it with the barronus group are included.


Asunto(s)
Arañas , Femenino , Masculino , Animales , Colombia , Distribución Animal
9.
Zootaxa ; 5383(1): 1-23, 2023 Dec 08.
Artículo en Inglés | MEDLINE | ID: mdl-38221264

RESUMEN

The genus Otoniela Brescovit, 1997 includes two species, the type species Otoniela adisi Brescovit, 1997, distributed in Peru and Brazil and O. quadrivittata (Simon, 1897), recorded in Venezuela and Argentina. Analyzing 127 individuals permited to expand the records of Otoniela adisi and to describe six additional species: O. lupercioi sp. nov. (), from Brazil, Argentina and Paraguay; O. chica sp. nov. (), O. duovizinhense sp. nov. (), and O. tigre sp. nov. (), from Brazil and Argentina; and O. aparecida n. sp () and O. negrinho sp. nov. (), known only from Brazil. As a result, a new emended diagnosis of the genus is presented. Additionally, complementary morphological data of Otoniela adisi are documented.


Asunto(s)
Arañas , Humanos , Animales , Distribución Animal
10.
Zootaxa ; 5130(1): 1-154, 2022 May 02.
Artículo en Inglés | MEDLINE | ID: mdl-36101116

RESUMEN

The genus Tenedos O. Pickard-Cambridge, 1897 is the most diverse among Neotropical Zodariids. It is composed of 44 species, fourteen of which occur in Brazil, while in Colombia, the diversity of the genus is poorly known, with only seven species recorded for the country. Based on genital morphology, several species groups can be distinguished within the genus, but these have not been formally established. We propose the species group barronus to include 41 species, 34 of which are distributed in Colombia and the other seven exclusively occurring in: Brazil (one Amazonian species), Peru (three Andean species), and Venezuela (three Andean species). The previously proposed species Tenedos andes Jocqu Baert, 2002; T. peckorum Jocqu Baert, 2002; T. jocquei Quijano Galvis, 2018 and T. capote Jocqu Baert, 2002 are redescribed based on the type material and the females of the two former species are described for the first time. T. barronus (Chamberlin, 1925) and T. persulcatus Jocqu Baert, 2002 are reported for Colombia for the first time, the female of the latter is described. Twenty-eight new species are herein described, illustrated and their distributions are represented (species listed according to morphological affinities): T. ayo sp. n. (), T. calebi sp. n. (), T. caqueta sp. n. (), T. choco sp. n. (), T. cofan sp. n. (), T. dankittipakuli sp. n. (), T. eberhardi sp. n. (), T. neitai sp. n. (), T. tama sp. n. (), T. griswoldi sp. n. (), T. guacharos sp. n. (), T. henrardi sp. n. (), T. humboldti sp. n. (), T. carlosprietoi sp. n. (), T. narinensis sp. n. (), T. mesa sp. n. (), T. macagual sp. n. (), T. marquetones sp. n. (), T. medina sp. n. () , T. pensilvania sp. n. (), T. piedecuesta sp. n. (), T. quipile sp. n. (), T. santarosa sp. n. (), T. luzmarinae sp. n. (), T. tatama sp. n. (), T. ticuna sp. n. (), T. wayuu sp. n. () and T. yurayaco sp. n. (). We further provide new morphological data for some species included in the barronus group, and briefly discuss some aspects on morphological affinities and distribution between the species, based on a comparison with Tenedos type species, T. lautus O. Pickard-Cambridge, 1897. Distribution maps for all Colombian species, including new records for T. barronus and T. persulcatus, are also herein included. Additionally, an identification key for all species of the barronus group is provided.


Asunto(s)
Arañas , Distribución Animal , Estructuras Animales/anatomía & histología , Animales , Tamaño Corporal , Colombia , Femenino , Tamaño de los Órganos
11.
Zootaxa ; 5124(4): 431-457, 2022 Apr 05.
Artículo en Inglés | MEDLINE | ID: mdl-35391112

RESUMEN

Huriini Simon, 1901 currently consists of six genera and 17 species, distributed exclusively in South America. In this work, the huriine genus Guriurius Marta, Bustamante, Ruiz Rodrigues, gen. nov. is proposed with two new species herein described: Guriurius minuano Marta, Bustamante, Ruiz Rodrigues, sp. nov. (type species) and Guriurius nancyae Marta, Bustamante, Ruiz Rodrigues, sp. nov. The female of Atelurius segmentatus Simon, 1901 is described and illustrated for the first time. Scoturius dipterioides Perger Rubio, 2018 is transferred to Atelurius Simon, 1901 due to the morphological similarity of copulatory ducts of epigyne, and Hurius pisac Galiano, 1985 is transferred to Simonurius Galiano, 1988 due to the similarities in body shape and female genitalia. Simonurius campestratus (Simon, 1901) is synonymized with Simonurius quadratarius (Simon, 1901). The interpretation of genitalic characters in Huriini is discussed. In addition, we provide new distributional records for Admesturius bitaeniatus (Simon, 1901), Ad. mariaeugeniae Bustamante Scioscia, 2014, Ad. schajovskoyi Galiano, 1988, At. segmentatus Simon, 1901, Scoturius tigris Simon, 1901, Hurius aeneus (Mello-Leito, 1941), and Simonurius gladifer (Simon, 1901). Except for Urupuyu Ruiz Maddison, 2015, all huriine genera are rediagnosed in the new context of tribe and genus composition.


Asunto(s)
Arañas , Distribución Animal , Animales , Femenino
12.
Zootaxa ; 5092(1): 134-142, 2022 Jan 18.
Artículo en Inglés | MEDLINE | ID: mdl-35391216

RESUMEN

Mecophilus carioca n. sp. is described based on males and females recently sampled in the Parque Nacional de Itatiaia, and is the first record of the genus from the state of Rio de Janeiro, Brazil. The specimens were analyzed in both light microscopy and scanning electron microscopy, and photos and schematic illustrations are provided. The known distribution of the three species of Mecophilus are presented in a map.


Asunto(s)
Microscopía , Animales , Brasil , Femenino , Masculino
13.
Zootaxa ; 5105(4): 539-558, 2022 Mar 07.
Artículo en Inglés | MEDLINE | ID: mdl-35391288

RESUMEN

After recent sampling in the Southeast and Northeast of Brazil, six new species of Aphilodon are described and illustrated based on males and females. From the Atlantic Forest biome, Aphilodon foraminis n. sp., A. aiuruocae n. sp., A. acutus n. sp. and A. rectitibia n. sp. were registered in the state of Rio de Janeiro. Aphilodon cangaceiro n. sp. is the first record of Aphilodontinae for the state of Piau and was sampled in the Caatinga biome. Aphilodon bahianus n. sp. is the first species of Aphilodontinae known for the state of Bahia, being registered from the Atlantic Forest and in the Caatinga biomes. Additionally, some morphological characteristics of all known species of Aphilodon and their distributions are compared.


Asunto(s)
Quilópodos , Bosques , Animales , Brasil , Femenino , Masculino
14.
Oecologia ; 197(1): 243-257, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-34370096

RESUMEN

The diversity of endotherms and ectotherms may be differently affected by ambient temperature and net primary productivity (NPP). Additionally, little is known about how these drivers affect the diversity of guilds of different trophic levels. We assessed the relative role of temperature and NPP in multitrophic guilds of ectothermic (arthropods: ants, ground beetles, spiders, and harvestmen) and endothermic (large mammals) animals along a tropical elevational gradient. We sampled arthropods at eight elevation belts and large mammals at 14 elevation belts in Atlantic rainforest (ranging from 600 to 2450 m.a.s.l.) of Itatiaia National Park, Southeast Brazil. Overall arthropod species richness was more associated with temperature than overall large-mammal species richness, while the latter was more associated with NPP. When separated into trophic guilds, we found that the species richness associated with NPP increased across arthropod trophic levels from herbivores to predators. Conversely, although NPP influenced large-mammal herbivore species richness, its effects did not seem to accumulate across large-mammal trophic levels since the species richness of large-mammal omnivores was more associated with temperature and none of the variables we studied influenced large-mammal predators. We suggest that thermal physiological differences between ectotherms and endotherms are responsible for the way in which arthropods and large mammals interact with or are constrained by the environment. Furthermore, the inconsistency regarding the role of temperature and NPP on species richness across multitrophic guilds of ectotherms and endotherms could indicate that thermal physiological differences might also interfere with energy use and flux in the food web.


Asunto(s)
Artrópodos , Biodiversidad , Animales , Ecosistema , Herbivoria , Temperatura
15.
Zootaxa ; 4991(2): 201-246, 2021 Jun 24.
Artículo en Inglés | MEDLINE | ID: mdl-34186849

RESUMEN

The species of Patrera Simon, 1903 from Brazilian Atlantic Forest biome are revised. With more than 2715 specimens examined, nine species were found and, of these, only one new species is described, Patrera teresopolis n. sp. from state of Rio de Janeiro. The other valid names were described by a single author: Patrera procera (Keyserling, 1891), P. longipes (Keyserling, 1891), P. virgata (Keyserling, 1891), P. cita (Keyserling, 1891), P. tensa (Keyserling, 1891), n. comb., P. opertanea (Keyserling, 1891), n. comb., P. concolor (Keyserling, 1891), n. comb. and P. recentissima (Keyserling, 1891), n. comb. (Later four here transferred from Teudis O. Pickard-Cambridge, 1896) and P. pellucida (Keyserling, 1891), n. comb. (here transferred from Sillus F.O. Pickard-Cambridge, 1900). The males of Patrera opertanea, P. pellucida and P. recentissima are described for the first time. The species Teudis itatiayae Mello-Leitão, 1915 and Sillus delicatus Mello-Leitão, 1922 are synonymized with P. longipes; Osoriella pallidoemanu Mello-Leitão, 1926 is synonymized with P. concolor. All species are described, illustrated and mapped. The known distribution of Patrera procera and P. longipes is expanded to Argentina and that of Patrera procera to Paraguay.


Asunto(s)
Arañas/clasificación , Distribución Animal , Animales , Brasil , Bosques , Masculino
16.
Zookeys ; 1031: 143-159, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33958911

RESUMEN

The first two anophthalmic species of spiders of the genus Ochyrocera Simon, 1892, are described for caves located in the iron formation of Floresta Nacional (FLONA) de Carajás in southeastern Pará State, Brazil. The caves are located in the municipalities of Parauapebas and Canaã dos Carajás, in the eastern portion of the Amazon Forest domain. Ochyrocera ritxoco sp. nov. and O. ritxoo sp. nov. are described based on males and females. The species have similar body characteristics with the total absence of eyes and complete depigmentation, characteristics that indicate possible evolution in subterranean environments , and thus are classified as troglobites. Each species is associated with a single geomorphological unit (mountain range), with Ochyrocera ritxoco sp. nov. being restricted to caves of Serra Norte (North Mountain) and O. ritxoo sp. nov. to caves of Serra Sul (South Mountain). Both species were collected in aphotic zones of the caves. Small and tangled webs of O. ritxoco sp. nov. were observed under blocks of stone in the soil or in cracks of the walls.

17.
Zootaxa ; 4914(1): zootaxa.4914.1.1, 2021 Jan 19.
Artículo en Inglés | MEDLINE | ID: mdl-33756597

RESUMEN

The knowledge on the diversity of the genus Patrera Simon in Colombia is widely expanded. P. auricoma (L. Koch, 1866) and P. armata (Chickering, 1940) are redescribed and their females are described for the first time and recorded from Cundinamarca and Meta departments, respectively. Aysha strandi (Caporiacco, 1947) is synonymized with P. armata. Three species groups in the genus Patrera are proposed to include the bulk of its species (fulvastra, florezi, and philipi). These groups are diagnosed based on sexual characters. Twenty-five new species are herein described, illustrated and mapped: P. anchicaya n. sp. (♂♀); P. barbacoas n. sp. (♂); P. borjai n. sp. (♂♀); P. danielae n. sp. (♂♀); P. dimar n. sp. (♂♀); P. perafani n. sp. (♂♀); P. platnicki n. sp. (♂); P. quillacinga n. sp. (♂♀), and P. ramirezi n. sp. (♂♀) into the fulvastra species group. P. bonaldoi n. sp. (♂♀); P. boteroi n. sp. (♂); P. carvalhoi n. sp. (♂♀); P. florezi n. sp. (♂♀); P. perijaensis n. sp. (♀); P. quimbaya n. sp. (♂♀); P. sampedroi n. sp. (♂); P. yukpa n. sp. (♂♀), and P. wiwa n. sp. (♂♀) in florezi species group. P. sutu n. sp. (♂); P. chucurui n. sp. (♂♀); P. dawkinsi n. sp. (♂); P. dentata n. sp. (♂); P. dracula n. sp. (♂); P. kuryi n. sp. (♂♀), and P. longitibialis n. sp. (♂) in philipi species group. We also briefly discuss some aspects of the species groups' genital morphology, based on a comparison with the type, P. fulvastra Simon. Additionally, distribution maps for all Colombian species including new records for P. armata (Chickering, 1940), P. auricoma (L. Koch, 1866) and P. suni Dupérré Tapia, 2016 from Cundinamarca, Meta and Nariño departments are also herein included.


Asunto(s)
Arañas/clasificación , Distribución Animal , Animales , Tamaño Corporal , Colombia , Femenino , Tamaño de los Órganos , Arañas/anatomía & histología
18.
Biota Neotrop. (Online, Ed. ingl.) ; 21(4): e20211210, 2021. tab, graf
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1339280

RESUMEN

Abstract: The Mid-Domain Effect (MDE) and the Rapoport (RE) effect are two biogeographical theories that make predictions about biogeogaphic patterns. MDE predicts higher richness in the central portions of a gradient if it is within a bounded domain. RE predicts a positive relation between altitude and species range size along an altitudinal gradient. Our aim was to document the distribution of spider species richness along an altitudinal gradient in the Brazilian Amazon, and to test the influence of MDE and RE on the diversity patterns. Our study was conducted at the Pico da Neblina (Amazonas state, Brazil), and we sampled spiders at six different altitudes using two methods: nocturnal hand sampling and a beating tray. We obtained 3,140 adult spiders from 39 families, sorted to 529 species/morphospecies. Richness declined continuously with an altitude increase, but the fit with the MDE richness estimates was very weak and was not significant. Range size was not related to altitude, i. e., no RE. Finally, the abundance distribution within each species range varied more specifically, which prevented the occurrence of a RE at the community level. The influence of MDE was extremely low, a consequence of our community characteristics, formed mostly by small range size species. Short and medium range species were located at all altitudes, preventing a significant relation between range size and altitude. The distribution of abundance within a species range varied specifically and do not support a RE hypothesis.


Resumo: O Efeito do Domínio Central (MDE) e o Efeito Rapoport (ER) são duas teorias biogeografias que fazem previsões sobre a distribuição da diversidade ao longo de gradientes. O MDE prevê maior riqueza nas porções centrais de um gradiente, se este estiver dentro de um domínio fechado. O ER prevê uma relação positiva entre altitude e tamanho da distribuição ao longo do gradiente altitudinal. Nosso objetivo foi o de registrar a distribuição de uma comunidade de aranhas ao longo de um gradiente altitudinal na Amazônia Brasileira, e testar se há uma influência do EDC e do ER sobre os padrões de diversidade da comunidade. Nosso estudo foi feito no Parque Nacional do Pico da Neblina (AM, Brasil), e nós amostramos aranhas em seis altitudes diferentes. Nós coletamos 3.140 exemplares adultos de 39 famílias, que foram divididos em 529 espécies/morfoespécies. A riqueza declinou com o aumento de altitude, mas o padrão não mostrou ajuste com as previsões feitas pelo EDC. O tamanho da distribuição altitudinal também não esteve relacionado ao previsto pelo ER. Por fim, a distribuição de abundância ao longo da distribuição altitudinal das espécies variou de maneira específica, o que impediu a ocorrência de um ER nos padrões da comunidade. A influência do EDC sobre os padrões observados foi baixíssima, uma consequência de características de nossa comunidade, já que esta é formada por espécies com pequena distribuição altitudinal. Espécies de distribuição altitudinal médias e grandes ocorreram em todas as partes do gradiente o que impediu a ocorrência de um ER. Por fim, o ER também não foi observado na distribuição de abundância das espécies ao longo do gradiente, já que essa variou de maneira específica.

19.
Zootaxa ; 4894(3): zootaxa.4894.3.7, 2020 Dec 10.
Artículo en Inglés | MEDLINE | ID: mdl-33311074

RESUMEN

The species of Syspira Simon from Hispaniola are revised and detailed documentation is provided for all known species from this island. Four new species (Syspira alayoni sp. n., S.  armasi sp. n., S.  barbacoa sp. n., and S.  bryantae sp. n.), and the unknown male of Syspira agujas Brescovit, Sánchez-Ruiz Bonaldo are described. New distribution records were found for three known species (S. agujas, S. cimitarra Brescovit, Sánchez-Ruiz Bonaldo and S.  medialuna Brescovit, Sánchez-Ruiz Bonaldo). The Hispaniolan endemic species Teminius monticola (Bryant, 1948) is transferred to Syspira based on the revision of its holotype. A key for Hispaniola Syspira species is provided. These species can be separated into two distinct groups based on features of the male palpal morphology and female genitalia: the cimitarra group including S. cimitarra, S. jimmyi Brescovit, Sánchez-Ruiz Bonaldo, S. alayoni and S. barbacoa sp. n., and the agujas group including S. agujas, S. medialuna, S. monticola comb. n., S. armasi sp. n. and S. bryantae sp. n.


Asunto(s)
Arañas , Distribución Animal , Animales , Femenino , Masculino
20.
Zootaxa ; 4878(2): zootaxa.4878.2.12, 2020 Nov 13.
Artículo en Inglés | MEDLINE | ID: mdl-33311163

RESUMEN

Brescovit (1993), in the revision of the genus Hibana, described H. talmina, based on males from Venezuela, Colombia, Guyana and northern Brazil. Subsequently, Brescovit Lise (1993) described its female, in an attempt to associate with the male, based on specimens collected in Dominica and Trinidad. Unfortunately, there was no justification for this mating. Recently Galvis et al. (2019) collected several couples of Hibana talmina in mangrove forests in some surrounding areas of Cartagena (Bolívar, Colombia), during a study of predation of crabs on these spiders. The detailed study of these couples showed that there was a wrong mating by Brescovit Lise (1993) and this is corrected here. The original distribution is updated, with the exclusion of Dominica. The females previously assigned to H. talmina are treated here as Hibana labonita sp. nov., which is diagnosed in relation to the other species of Hibana.


Asunto(s)
Arañas , Distribución Animal , Animales , Femenino , Masculino
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