Novas espécies de Trogolaphysa Mills (Arthropoda: Collembola) de um complexo de cavernas em Minas Gerais, Brasil
Entomobryoidea is the largest superfamily of Collembola and the most representative considering cave taxa. Trogolaphysa Mills, 1938 (Entomobryoidea, Paronellidae) is commonly found in Neotropical caves and there are three cave species recorded from southeastern Brazil, of which T. hauseri Yosii,...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/29518 |
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| Resumo: | Entomobryoidea is the largest superfamily of Collembola and the most representative
considering cave taxa. Trogolaphysa Mills, 1938 (Entomobryoidea, Paronellidae) is commonly
found in Neotropical caves and there are three cave species recorded from southeastern Brazil,
of which T. hauseri Yosii, 1988 is considered vulnerable by the Brazilian Red Book of
Endangered Fauna. In this sense the identification and description of subterranean fauna is
important for conservation of an area since each cave ecosystem has particular features and
could hold endemic taxa. This study aims to describe new species of Trogolaphysa from a cave
complex, Lagoa Santa Karst, Minas Gerais,southeastern Brazil. Specimens were collected from
caves in Matozinhos municipality during the dry season (2017) and rainy season (2018). The
material was mounted on slides, analysed and drew under an optical microscope. Four new
species of Trogolaphysa were found and described. Trogolaphysa sp. nov. 1 is diagnosed by
8+8 eyes, head with macrochaetae A0, A3, S5 and Pa5, 21–23 spines on trochanteral organ,
unguiculus lanceolate with serrated external edge and 22–24 inner spines on dens;
Trogolaphysa sp. nov. 2 presents 8 + 8 eyes, head with macrochaetae A0, A2, S3, Pa5 and
Pm3, 20 spines on trochanteral organ, unguiculus lanceolate with serrated external edge and
22–33 inner spines on dens; Trogolaphysa sp. nov. 3 is diagnosed by absence of eyes and
pigments, head with macrochaetae A0, A2, S3 (S3 as microchaeta in some specimens), Pa5 and
Pm3, thorax II with three macrochaetae on p3 complex, 18 spines on trochanteral organ,
unguiculus truncate with smooth external edge and 21–23 inner spines on dens; and
Trogolaphysa sp. nov. 4 is diagnosed by 8+8 eyes, head with macrochaetae A0, A2, S3, S5,
Pa5,Pm3 and p, thorax II with 4–6 macrochaetae (2–3 macrochaetae on p3 complex), 32 spines
on trochanteral organ, unguiculuslanceolate with smooth external edges and 33–36 inner spines
on dens. The new records and descriptions of species, especially Trogolaphysa sp. nov. 3
bearing clear troglomorphisms (absence of eyes and body pigment) suggests that some sampled
caves possibly hold endemic fauna and therefore such areas could be considered priority areas
for conservation, which should be spared of exploration and other anthropic activities. |
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