Streblid flies parasitizing cave bats in Carajás, Amazonia, with a new record for Brazil / Moscas estréblidas parasitando morcegos cavernícolas em Carajás, Amazônia, com um novo registro para o Brasil

Streblid flies (Diptera: Streblidae) are hematophagous and highly specialized parasitic insects, found only on bats (Chiroptera). Caves are important roosts for bats but, despite harboring high bat richness, relatively few studies exist on the ecology and biology of streblid flies in cave environments, especially in Amazonia, the largest domain in northern Brazil, with >140 bat species and thousands of caves. To fill some of the gaps in the geographical distribution and interspecific relationships for streblid flies in the region, we sampled bats in six caves in Carajás National Forest, a protected area in Pará state (Brazil). Thirteen of the 14 streblid species found are new records for Carajás, with three new records for Pará state and two for the northern region of Brazil. Nycterophilia fairchildi was recorded for the first time in Brazil. Most streblids had host-specific behavior, however, N. fairchildi, Trichobius caecus, and T. johnsonae were less host-specific, parasitizing different Pteronotus bat species. The gregarious behavior of Pteronotus species and the spatial distribution of their colonies within the caves may be important factors in the flies' exchange among congener hosts and deserve special attention in future studies. Furthermore, studies on ecological interaction networks between bats and their ectoparasitic flies in caves will be useful for a broader understanding of how this relationship is structured over time and space, as well as its impact on both bats and flies.(AU)

Moscas estréblidas (Diptera: Streblidae) são insetos hematófagos e parasitas encontrados apenas sobre morcegos (Chiroptera). As cavernas são abrigos importantes para morcegos, mas, apesar de abrigarem alta riqueza desses mamíferos, são relativamente poucos os estudos focados na ecologia e biologia de moscas estréblidas em ambientes cavernícolas, especialmente na Amazônia, o maior domínio no norte do Brasil, com >140 espécies de morcegos e milhares de cavernas. Para preencher algumas das lacunas na distribuição geográfica e nas relações interespecíficas de moscas estréblidas na região, amostramos morcegos cavernícolas em seis cavernas na Floresta Nacional de Carajás, uma área protegida no estado do Pará. Treze das 14 espécies de moscas estréblidas encontradas são novos registros para Carajás, com três novos registros para o Pará e dois para a região norte do Brasil. Nycterophilia fairchildi foi registrada pela primeira vez no Brasil. A maioria das espécies de moscas foi hospedeiro-específica; entretanto, N. fairchildi, Trichobius caecus e T. johnsonae foram menos específicas, parasitando diferentes espécies de morcegos do gênero Pteronotus. O comportamento gregário das espécies de Pteronotus e a distribuição espacial de suas colônias dentro das cavernas podem ser fatores importantes na troca de moscas entre hospedeiros congêneres e merecem atenção especial em estudos futuros. Adicionalmente, estudos sobre redes de interação ecológica entre morcegos e suas moscas ectoparasitas em cavernas serão úteis para uma compreensão mais ampla de como essa relação se estrutura no tempo e no espaço, bem como sobre o seu impacto, tanto sobre os morcegos como sobre as moscas.(AU)

New reports of parasitism by Synhimantus (Dispharynx) nasuta (Rudolphi, 1819) (Nematoda: Acuariidae) in wild birds in Brazil / Novos relatos de parasitismo por Synhimantus (Dispharynx) nasuta (Rudolphi, 1819) (Nematoda: Acuariidae) em aves silvestres no Brasil

The aim of this study was to register the first occurrence of Synhimantus (Dispharynx) nasuta (Nematoda: Acuariidae) in some species of wild birds in Brazil. In addition, the aim was to deepen the knowledge about the morphology of this species through analysis using scanning electron microscopy. Nematodes were collected in wild birds of the species Turdus leucomelas, T. rufiventris, Mimus saturninus, Pitangus sulphuratus, Megascops choliba, Tyto furcata, and Falco sparverius. The morphological and morphometric data observed in the nematodes prove that these parasites are S. (D.) nasuta. This study also provides morphological data from light microscopy and scanning electron microscopy (SEM), as well as the morphometry of this nematode in each host species. Therefore, the current study confirms the first record of this nematode in F. sparverius and T. furcata in South America and, at the same time, these findings expand the host range of this parasite species worldwide, through the first records in M. choliba, M. saturninus, T. leucomelas and T. rufiventris.(AU)

O objetivo deste estudo foi registrar a primeira ocorrência de Synhimantus (Dispharynx) nasuta (Nematoda: Acuariidae) em algumas espécies de aves silvestres do Brasil. Além disso, pretendeu-se aprofundar o conhecimento sobre a morfologia desta espécie por meio de análises por microscopia eletrônica de varredura. Os nematoides foram coletados em aves silvestres das espécies Turdus leucomelas, T. rufiventris, Mimus saturninus, Pitangus sulphuratus, Megascops choliba, Tyto furcata e Falco sparverius. Os dados morfológicos e morfométricos observados nos nematoides comprovaram que esses parasitos são S. (D.) nasuta. Este estudo também fornece dados morfológicos de microscopia de luz e microscopia eletrônica de varredura (MEV), assim como a morfometria deste nematoide em cada espécie de hospedeiro. Portanto, o presente estudo confirma o primeiro registro desse nematoide em F. sparverius e T. furcata na América do Sul e, ao mesmo tempo, esses achados ampliam a gama de hospedeiros dessa espécie de parasito em todo o mundo, por meio dos primeiros registros em M. choliba, M. saturninus, T. leucomelas e T. rufiventris.(AU)

New records of Monogenoidea (Platyhelminthes) from three marine fish species from the coast of Angra dos Reis, Rio de Janeiro, Brazil

During a survey of helminth parasites, five monogenoid species were reported from marine fishes from the coast of Angra dos Reis, littoral of Rio de Janeiro State, Atlantic Ocean. A total of 810 monogenoids were collected: Pseudotagia pomadasys Hernández-Vale, Bunkley-Williams & Williams Jr, 2016, Pseudoeurysorchis travassosi Caballero & Bravo-Hollis, 1962 in Haemulopsis corvinaeformis (Steindachner, 1868) (=Pomadasys corvinaeformis), Neodiplectanum mexicanum (Mendoza-Franco, Roche & Torchin, 2008) Domingues, Diamanka & Pariselle, 2011 and Aristocleidus hastatus Mueller, 1936 in Diapterus rhombeus (Cuvier, 1829) and Acanthocercodes bullardi Kritsky & Diggles, 2015 in Polydactylus virginicus (Linnaeus, 1758). The presence of P. pomadasys, P. travassosi and A. hastatus in the Southwest Atlantic Ocean represents a new geographical distribution for these species. Haemulopsis corvinaeformis represents a new host record for P. travassosi and A. bullardi is reported in the present paper for the first time parasitizing the gills of a polynemid in South Atlantic Ocean. The findings show that they belong to species previously recorded from the same or congeneric hosts from Central America and Mexico, representing new data on hosts and geographical records.(AU)

Community ecology of the metazoan parasites of the Atlantic anchoveta, Cetengraulis edentulus (Actinopterygii: Engraulidae) from the Sepetiba Bay, Rio de Janeiro, Brazil

The Atlantic anchoveta, Cetengraulis edentulus (Cuvier, 1829) is one of the most commercially important fish species in the littoral of Brazil. The present study evaluates the parasitic fauna of this engraulid fish from the southeastern Brazilian coast. Between October 2019 and March 2020, a total of 100 specimens of C. edentulus from the Sepetiba Bay, Rio de Janeiro, Brazil (22°57'44"S; 43°52'28"W), were examined. Eighty-five specimens of C. edentulus were parasitized by at least one species of metazoan, with a mean of 4.32 ± 6.12 parasites/fish. Eleven species of parasites were collected: five digeneans, two monogeneans, two copepods, one isopod and one nematode. The nematode Hysterothylacium sp. was the most abundant and dominant species, representing 51.85% of the metazoan parasites collected, showing positive correlation with the host's total length and parasite abundance and prevalence. The mean abundance and prevalence of Hysterothylacium sp. was significantly higher in female hosts. One pair of larval endoparasites showed positive covariation. Centengraulis edentulus represents a new host record for nine species of parasites. A dominance of endoparasitic larval stages is documented in the parasite community of C. edentulus. This may be a function of the feeding habits of engraulid fish, which feed mainly on zooplanktonic organisms. It may also have to do with to the fact that C. edentulus is the intermediate and/or paratenic host of fish parasites, birds, and marine mammals.(AU)

First record of Ereymatermes rotundiceps (Termitidae: Nasutitermitinae) as inquiline of Embiratermes neotenicus (Termitidae: Syntermitinae) in the Colombian Amazon / Primer registro de Ereymatermes rotundiceps (Termitidae: Nasutitermitinae) como inquilino de Embiratermes neotenicus (Termitidae: Syntermitinae) en la Amazonia Colombiana

We report, for the first time, the presence of the termite Ereymatermes rotundiceps Constantino, 1991 as an inquiline of the termite Embiratermes neotenicus (Holmgren, 1906) in the Colombian Amazon, and provide new morphometric information on the species. Soldiers of E. rotundiceps were collected in epigeal nests built by E. neotenicus in pastures during the transition from the dry to the rainy season. The association between host and inquiline termites does not seem to be antagonistic, but the relationship between these two species still needs to be clarified.(AU)

Reportamos por primera vez la presencia de la termita Ereymatermes rotundiceps Constantino, 1991 como inquilino de Embiratermes neotenicus (Holmgren, 1906) en la Amazonia Colombiana y aportamos nueva información morfométrica para las especies. Soldados de E. rotundiceps fueron recolectados en nidos epigeos construidos por E. neotenicus en pasturas durante la transición de la estación seca a la lluviosa. La asociación entre las termitas hospederas e inquilinas parece no ser antagónica, sin embargo, las relaciones entre estas dos especies están aún por esclarecer.(AU)

Megalopodidae (Insecta, Coleoptera): new occurrence and host plant records for Brazil

Abstract The Brazilian Megalopodidae fauna consists of 147 species from 11 genera, of which Mastostethus Lacordaire is the most diverse, representing about half of the species. Nevertheless, knowledge about species distributions and their relationships with host plants is still scarce. Since this group has endophytic immatures and bore into branches, they are economically important as they mainly damage Solanaceae species. Thus, this study sought to determine the Megalopodidae species that occur in forest fragments of southwestern and western Paraná and associate them with their host plants. For this purpose, we used material collected with Malaise traps and active manual sampling to determine associations with host plants. A total of 170 specimens of 11 species were sampled, of which Pseudhomalopterus carinatus Pic, 1920 was the most abundant and collected in all fragments. Four species were sampled exclusively through manual collections and associated with their host plants, all of which were new association records for Brazilian megalopodides. Mastostethus pantherinus Lacordaire, 1845 was associated with an Asteraceae for the first time. Additionally, Mastostethus minutusMonrós, 1947 is a new record for Brazil.

Megalopodidae (Insecta, Coleoptera): new occurrence and host plant records for Brazil

Abstract The Brazilian Megalopodidae fauna consists of 147 species from 11 genera, of which Mastostethus Lacordaire is the most diverse, representing about half of the species. Nevertheless, knowledge about species distributions and their relationships with host plants is still scarce. Since this group has endophytic immatures and bore into branches, they are economically important as they mainly damage Solanaceae species. Thus, this study sought to determine the Megalopodidae species that occur in forest fragments of southwestern and western Paraná and associate them with their host plants. For this purpose, we used material collected with Malaise traps and active manual sampling to determine associations with host plants. A total of 170 specimens of 11 species were sampled, of which Pseudhomalopterus carinatus Pic, 1920 was the most abundant and collected in all fragments. Four species were sampled exclusively through manual collections and associated with their host plants, all of which were new association records for Brazilian megalopodides. Mastostethus pantherinus Lacordaire, 1845 was associated with an Asteraceae for the first time. Additionally, Mastostethus minutusMonrós, 1947 is a new record for Brazil.

New host record for the enigmatic Neotropical mantidfly genus Anchieta Navás, 1909 (Neuroptera, Mantispidae), a mimic of wasps and stingless bees

Abstract Species of Symphrasinae (Neuroptera: Mantispidae) are ectoparasitoids of larvae and pupae of holometabolous insects, primarily of Hymenoptera in their larval stages. Herein we present the third case of an association between the mantidfly genus Anchieta Navás, 1909 with the order Hymenoptera. The hymenopteran species attacked by the as of yet undescribed species of Anchieta is Montezumia dimidiata Saussure, 1852 (Vespidae: Eumeninae), a predacious wasp that constructs mud nests. The association was observed in Peruvian Amazonia (near Tarapoto, San Martín), after rearing the mantidflies from a wasp nest. The biology and mimicry pattern with stingless bees of the reared Anchieta species is discussed.

Redescription of the Neotropical species Trichodischia soror Bigot, 1885 (Diptera: Tachinidae), with a new generic synonymy

Abstract Trichodischia Bigot, 1885 is a Neotropical genus with a confusing taxonomic history. This was initially composed of two species: T. caerulea Bigot, 1885 and T. soror Bigot, 1885. Later, the genus TrichoraeaCortés, 1974 was erected for T. caerulea. When reviewing the taxonomic history of both species, we discovered that both genera have been considered synonymous based on erroneous information and without a formal synonymy being proposed. Herein, we redescribed T. soror, provide images of adults and describe the male terminalia for the first time. In addition, by examining the type material, we propose Trichoraea as a junior synonym of Trichodischia, syn. nov., confirm T. caerulea comb. rest. and T. soror as valid species and provide some comments about the taxonomy and host record of the genus.

New host record for the enigmatic Neotropical mantidfly genus Anchieta Navás, 1909 (Neuroptera, Mantispidae), a mimic of wasps and stingless bees

Abstract Species of Symphrasinae (Neuroptera: Mantispidae) are ectoparasitoids of larvae and pupae of holometabolous insects, primarily of Hymenoptera in their larval stages. Herein we present the third case of an association between the mantidfly genus Anchieta Navás, 1909 with the order Hymenoptera. The hymenopteran species attacked by the as of yet undescribed species of Anchieta is Montezumia dimidiata Saussure, 1852 (Vespidae: Eumeninae), a predacious wasp that constructs mud nests. The association was observed in Peruvian Amazonia (near Tarapoto, San Martín), after rearing the mantidflies from a wasp nest. The biology and mimicry pattern with stingless bees of the reared Anchieta species is discussed.

Redescription of the Neotropical species Trichodischia soror Bigot, 1885 (Diptera: Tachinidae), with a new generic synonymy

Abstract Trichodischia Bigot, 1885 is a Neotropical genus with a confusing taxonomic history. This was initially composed of two species: T. caerulea Bigot, 1885 and T. soror Bigot, 1885. Later, the genus TrichoraeaCortés, 1974 was erected for T. caerulea. When reviewing the taxonomic history of both species, we discovered that both genera have been considered synonymous based on erroneous information and without a formal synonymy being proposed. Herein, we redescribed T. soror, provide images of adults and describe the male terminalia for the first time. In addition, by examining the type material, we propose Trichoraea as a junior synonym of Trichodischia, syn. nov., confirm T. caerulea comb. rest. and T. soror as valid species and provide some comments about the taxonomy and host record of the genus.

Three new species of Urocleidoides (Monogenoidea: Dactylogyridae) parasitizing characiforms (Actinopterygii: Characiformes) in Tocantins River, states of Tocantins and Maranhão, and new record for U. triangulus in Guandu River, state of Rio de Janeiro, Brazil

ABSTRACT Three new species of Urocleidoides Mizelle & Price, 1964 are described from the gills of characiform fishes in the Tocantins River and its tributaries. Urocleidoides boulengerellae sp. nov. is described from Boulengerella cuvieri (Spix & Agassiz, 1829) and differs from all its congeners by the dorsal bar with a long posteromedial projection; male copulatory organ with 2-3 counterclockwise rings and a base with a flange; an accessory piece comprising a robust Y-shaped unit and a sheath-like unit; and a highly sclerotized vaginal canal. Urocleidoides paratriangulus sp. nov., described from Psectrogaster amazonica Eigenmann & Eigenmann, 1889, Cyphocharax gouldingi Vari, 1992, Caenotropus labyrinthicus (Kner, 1858) and Mylesinus paucisquamatus Jégu & Santos, 1988, is most similar to Urocleidoides triangulus (Suriano, 1981) Rossin & Timi, 2016 based on the shape of the anchors and bars but differs from U. triangulus in the morphology of the projection of the dorsal bar, the number of rings of male copulatory organ, and by the smaller size of members of hook pairs 1 and 5 compared with those of the remaining pairs. Urocleidoides tocantinensis sp. nov. is easily distinguished from all other species of the genus by the morphology of the vagina, which present a vaginal vestibule with a membranous cap. Urocleidoides triangulus is reported from its type host in the Guandu River, state of Rio de Janeiro. The present study increases the number of Urocleidoides species to 37 recognized species that fit all the generic characters.

Megalopodidae (Insecta, Coleoptera): new occurrence and host plant records for Brazil

The Brazilian Megalopodidae fauna consists of 147 species from 11 genera, of which Mastostethus Lacordaire is the most diverse, representing about half of the species. Nevertheless, knowledge about species distributions and their relationships with host plants is still scarce. Since this group has endophytic immatures and bore into branches, they are economically important as they mainly damage Solanaceae species. Thus, this study sought to determine the Megalopodidae species that occur in forest fragments of southwestern and western Paraná and associate them with their host plants. For this purpose, we used material collected with Malaise traps and active manual sampling to determine associations with host plants. A total of 170 specimens of 11 species were sampled, of which Pseudhomalopterus carinatus Pic, 1920 was the most abundant and collected in all fragments. Four species were sampled exclusively through manual collections and associated with their host plants, all of which were new association records for Brazilian megalopodides. Mastostethus pantherinus Lacordaire, 1845 was associated with an Asteraceae for the first time. Additionally, Mastostethus minutus Monrós, 1947 is a new record for Brazil.(AU)

Two new species of monogenoidean parasites (Platyhelminthes: Neodermata) of ornamental fish of Loricariidae (Siluriformes) from the Xingu River, Brazilian Amazon

ABSTRACT Two new monogenoidean species of Unilatus Mizelle & Kritsky, 1967 found in the gills of loricariids in the Lower Xingu-Iriri rivers are described: Unilatus humboldtii sp. nov. from Baryancistrus niveatus (Castelnau, 1855), Panaque armbrusteri Lujan, Hidalgo & Stewart, 2010, Pseudacanthicus sp. (type-host), and Scobinancistrus aureatus Burgess, 1994; and Unilatus luciarappae sp. nov. from P. armbrusteri. Unilatus humboldtii sp. nov. is distinguished from other congeneric species due to its anterior anchor with well-developed superficial root with depressed or truncated distal portion, and inconspicuous or reduced deep root; anterior bar with posteromedial projection; hooks of pair 1 with dilated shaft comprising 2/3 of the hook length; spiraled male copulatory organ with approximately 16-18 counterclockwise loops. Unilatus luciarappae sp. nov. is characterized by having anterior anchor with well-developed superficial root and reduced deep root, slightly curved shaft, elongated, slightly curved, and tapered point; spiraled MCO with approximately 18-19 counterclockwise loops, with median distal bulbous portion and remaining portion tapered and elongated, comprising 1/4 of the body length; and accessory piece comprising approximately 2/3 of the MCO length. More than fifty years after the description of the type species of Unilatus from an artificial environment (U.S. aquaria), this study represents the first formal record and description of Unilatus species from hosts collected in natural habitats in the Xingu River. Considering the impact of the Belo Monte dam on the formerly pristine conditions of the study region and the importance of loricariids for the ornamental fish trade, we recommend monitoring monogenoidean diversity, parasite-host interaction, as well as the dispersion patterns and pathogenicity of these parasites.

Community ecology of the metazoan parasites of the Atlantic thread herring, Opisthonema oglinum (Lesueur, 1818) (Actinopterygii: Clupeidae) from the Sepetiba Bay, Rio de Janeiro, Brazil / Ecologia da comunidade dos metazoários parasitos da sardinha bandeira Opisthonema oglinum (Lesueur, 1818) (Actinopterygii: Clupeidae) da Baía de Sepetiba, Rio de Janeiro, Brasil

This study aimed to evaluate the parasitic fauna of Opisthonema oglinum (Lesueur, 1818) from Southeastern Brazil. Between September 2017 and March 2018, a total of 100 specimens of O. oglinum from the Sepetiba Bay, Rio de Janeiro, Brazil (22°54'S, 43°34'W) were examined. Ninety one specimens of O. oglinum were parasitized by at least one species of metazoan with a mean of 5.84 ± 7.98 parasites/fish. Seven species were collected: 2 digeneans, 2 monogeneans, 2 copepods and 1 nematode. The digenean Parahemiurus merus (Linton) was the most abundant and dominant species, representing 43% of metazoan parasites collected. The parasite species richness was positively correlated with the total length of the hosts. Only Neobomolochus elongatus Cressey showed a positive correlation between host's total length and parasite prevalence. The mean parasite species diversity was not correlated with host's total length, but significant differences among the mean parasite diversity between males and females was observed. Opisthonema oglinum represents a new host record for Caligus mutabilis Wilson, Hysterothylacium sp. and Cribomazocraes travassosi Santos and Kohn. The copepod N. elongatus is recorded for the first time on the Brazilian coast.(AU)

Este estudo teve como objetivo avaliar a fauna parasitária de Opisthonema oglinum (Lesueur, 1818) do Sudeste do Brasil. No período entre setembro de 2017 e março de 2018, um total de 100 espécimes de O. oglinum provenientes da Baía de Sepetiba, Rio de Janeiro, Brasil (22°54S; 43°34O), foram examinados. Noventa espécimes de O. oglinum estavam parasitados por pelo menos uma espécie de metazoário com média de 5,84 ± 7,98 parasitos/peixe. Sete espécies foram coletadas: 2 digenéticos, 2 monogenéticos, 2 copépodes e 1 nematoide. O digenético Parahemiurus merus (Linton) foi à espécie mais abundante e dominante, representando 43% dos metazoários parasitos coletados. A riqueza parasitária foi correlacionada com o comprimento total do hospedeiro. Apenas Neobomolochus elongatus Cressey apresentou correlação positiva entre o comprimento total do hospedeiro e a prevalência parasitária. A diversidade média de espécies de parasitos não apresentou correlação com o comprimento total do hospedeiro, mas foram observadas diferenças significativas entre a diversidade média de parasitos entre machos e fêmeas. Opisthonema oglinum representa um novo registro de hospedeiro para Caligus mutabilis Wilson, Hysterothylacium sp. e Cribomazocraes travassosi Santos and Kohn. O copépode N. elongatus é registrado pela primeira vez na costa Brasileira.(AU)

Two new species of monogenoidean parasites (Platyhelminthes: Neodermata) of ornamental fish of Loricariidae (Siluriformes) from the Xingu River, Brazilian Amazon

Two new monogenoidean species of Unilatus Mizelle & Kritsky, 1967 found in the gills of loricariids in the Lower Xingu-Iriri rivers are described: Unilatus humboldtii sp. nov. from Baryancistrus niveatus (Castelnau, 1855), Panaque armbrusteri Lujan, Hidalgo & Stewart, 2010, Pseudacanthicus sp. (type-host), and Scobinancistrus aureatus Burgess, 1994; and Unilatus luciarappae sp. nov. from P. armbrusteri. Unilatus humboldtii sp. nov. is distinguished from other congeneric species due to its anterior anchor with well-developed superficial root with depressed or truncated distal portion, and inconspicuous or reduced deep root; anterior bar with posteromedial projection; hooks of pair 1 with dilated shaft comprising 2/3 of the hook length; spiraled male copulatory organ with approximately 16-18 counterclockwise loops. Unilatus luciarappae sp. nov. is characterized by having anterior anchor with well-developed superficial root and reduced deep root, slightly curved shaft, elongated, slightly curved, and tapered point; spiraled MCO with approximately 18-19 counterclockwise loops, with median distal bulbous portion and remaining portion tapered and elongated, comprising 1/4 of the body length; and accessory piece comprising approximately 2/3 of the MCO length. More than fifty years after the description of the type species of Unilatus from an artificial environment (U.S. aquaria), this study represents the first formal record and description of Unilatus species from hosts collected in natural habitats in the Xingu River. Considering the impact of the Belo Monte dam on the formerly pristine conditions of the study region and the importance of loricariids for the ornamental fish trade, we recommend monitoring monogenoidean diversity, parasite-host interaction, as well as the dispersion patterns and pathogenicity of these parasites.(AU)

Redescription of the Neotropical species Trichodischia sororBigot, 1885 (Diptera: Tachinidae), with a new generic synonymy

Trichodischia Bigot, 1885 is a Neotropical genus with a confusing taxonomic history. This was initially composed of two species: T. caerulea Bigot, 1885 and T. soror Bigot, 1885. Later, the genus Trichoraea Cortés, 1974 was erected for T. caerulea.When reviewing the taxonomic history of both species, we discovered that both genera have been considered synonymous based on erroneous information and without a formal synonymy being proposed. Herein, we redescribed T. soror, provide images of adults and describe the male terminalia for the first time. In addition, by examining the type material, we propose Trichoraea as a junior synonym of Trichodischia,syn. nov., confirm T. caeruleacomb. rest. and T. soror as valid species and provide some comments about the taxonomy and host record of the genus.(AU)

Three new species of Urocleidoides (Monogenoidea: Dactylogyridae) parasitizing characiforms (Actinopterygii: Characiformes) in Tocantins River, states of Tocantins and Maranhão, and new record for U. triangulus in Guandu River, state of Rio de Janeiro, Brazil

Three new species of Urocleidoides Mizelle & Price, 1964 are described from the gills of characiform fishes in the Tocantins River and its tributaries. Urocleidoides boulengerellae sp. nov. is described from Boulengerella cuvieri (Spix & Agassiz, 1829) and differs from all its congeners by the dorsal bar with a long posteromedial projection; male copulatory organ with 2-3 counterclockwise rings and a base with a flange; an accessory piece comprising a robust Y-shaped unit and a sheath-like unit; and a highly sclerotized vaginal canal. Urocleidoides paratriangulus sp. nov., described from Psectrogaster amazonica Eigenmann & Eigenmann, 1889, Cyphocharax gouldingi Vari, 1992, Caenotropus labyrinthicus (Kner, 1858) and Mylesinus paucisquamatus Jégu & Santos, 1988, is most similar to Urocleidoides triangulus (Suriano, 1981) Rossin & Timi, 2016 based on the shape of the anchors and bars but differs from U. triangulus in the morphology of the projection of the dorsal bar, the number of rings of male copulatory organ, and by the smaller size of members of hook pairs 1 and 5 compared with those of the remaining pairs. Urocleidoides tocantinensis sp. nov. is easily distinguished from all other species of the genus by the morphology of the vagina, which present a vaginal vestibule with a membranous cap. Urocleidoides triangulus is reported from its type host in the Guandu River, state of Rio de Janeiro. The present study increases the number of Urocleidoides species to 37 recognized species that fit all the generic characters.

Three new species of Urocleidoides (Monogenoidea: Dactylogyridae) parasitizing characiforms (Actinopterygii: Characiformes) in Tocantins River, states of Tocantins and Maranhão, and new record for U. triangulus in Guandu River, state of Rio de Janeiro, Brazil

Three new species of Urocleidoides Mizelle & Price, 1964 are described from the gills of characiform fishes in the Tocantins River and its tributaries. Urocleidoides boulengerellae sp. nov. is described from Boulengerella cuvieri (Spix & Agassiz, 1829) and differs from all its congeners by the dorsal bar with a long posteromedial projection; male copulatory organ with 2-3 counterclockwise rings and a base with a flange; an accessory piece comprising a robust Y-shaped unit and a sheath-like unit; and a highly sclerotized vaginal canal. Urocleidoides paratriangulus sp. nov., described from Psectrogaster amazonica Eigenmann & Eigenmann, 1889, Cyphocharax gouldingi Vari, 1992, Caenotropus labyrinthicus (Kner, 1858) and Mylesinus paucisquamatus Jégu & Santos, 1988, is most similar to Urocleidoides triangulus (Suriano, 1981) Rossin & Timi, 2016 based on the shape of the anchors and bars but differs from U. triangulus in the morphology of the projection of the dorsal bar, the number of rings of male copulatory organ, and by the smaller size of members of hook pairs 1 and 5 compared with those of the remaining pairs. Urocleidoides tocantinensis sp. nov. is easily distinguished from all other species of the genus by the morphology of the vagina, which present a vaginal vestibule with a membranous cap. Urocleidoides triangulus is reported from its type host in the Guandu River, state of Rio de Janeiro. The present study increases the number of Urocleidoides species to 37 recognized species that fit all the generic characters.(AU)

Helminthfauna of road-killed cougars (Puma concolor) from the Northeastern Region of São Paulo State, Brazil

As the second-largest Neotropical carnivore, cougars (Puma concolor) are especially important for maintenance of the biodiversity and ecosystem health. Five wild adult cougars (Puma concolor), found roadkilled in highways in the Northeastern region of São Paulo, were evaluated in search for parasites. Ten species representing nine families were identified. The most prevalent helminths were Uncinaria bidens, Lagochilascaris major, Spirometra sp., and Oncicola canis, followed by Cylicospirura subaequalis, Toxascaris leonina, Taenia omissa, Echinococcus sp., Filaroides sp. and Oncicola oncicola. It is important to note that some helminths found in this study, such as L. major, Spirometra sp., O. oncicola, O. canis, Echinococcus sp., T. leonina, C. subaequalis, and Filaroides sp. are known to affect domestic carnivores, which may indicate interaction between wild and domestic hosts. This study represents a new host record for four of the species found in cougars, U. bidens, L. major, O. canis, and Filaroides sp., and new locality records for U. bidens, T. leonina, C. subaequalis, and Filaroides sp(AU)

Como o segundo maior carnívoro neotropical, as onças-pardas são muito importantes para a manutenção da biodiversidade e a saúde do ecossistema. Cinco pumas adultos de vida livre (Puma concolor), mortos em rodovias na região Nordeste de São Paulo, foram avaliados quanto a presença de parasitas. Dez espécies, representando nove famílias foram identificadas. Os helmintos mais prevalentes foram Uncinaria bidens, Lagochilascaris major, Spirometra sp., e Oncicola canis, seguidos por Cylicospirura subaequalis, Toxascaris leonina, Taenia omissa, Echinococcus sp., Filaroides sp. e Oncicola oncicola. É importante salientar que alguns dos helmintos encontrados neste estudo, tais como Lagochilascaris major, Spirometra sp., O. oncicola, Oncicola canis, Echinococcus sp., Toxascaris leonina, Cylicospirura subaequalis, e Filaroides sp., afetam sabidamente carnívoros domésticos, o que pode indicar a interação entre hospedeiros selvagens e domésticos. Este estudo representa novos registros de hospedeiro para quatro espécies de helmintos, sendo elas U. bidens, L. major, O. canis, and Filaroides sp., além de novo registro de localidade para U. bidens, T. leonina, C. subaequalis, e Filaroides sp(AU)