Revisão taxonômica de Enna (Araneae,Lycosoidea, Trechaleidae) da região neotropical

• Ano de defesa: 2007
• Autor(a) principal: Silva, Estevam Luís Cruz da
• Orientador(a): Lise, Arno Antonio
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre
• Palavras-chave em Português: ARACNÍDEOS; ARANHAS; ZOOLOGIA; TAXIONOMIA; REGIÕES NEOTROPICAIS
• Link de acesso: http://hdl.handle.net/10923/5423

The spider genus Enna was proposed by . O. P-CAMBRIDGE (1897), typespecies E. velox. The genus comprises five species: E. velox O. P. -Cambridge, 1897, E. approximata (O. P. -Cambridge, 1893), E. jullieni (Simon, 1898), E. minor Petrunkevitch, 1925 e E. nesiotes Chamberlin, 1925. SIERWALD (1990) removed Enna from Pisauridae and transferred to Trechaleidae after CARICO (1986). Recently the spider genus Hesydrus Simon, 1898 was revised by CARICO (2005a) and H. estebanensis Simon, 1898 was transferred to Enna. This genus presents a Neotropical distribution, occurring from South of México to Central Brazil. These spiders are characterized by short and straight tarsi. The median apophysis of the male palpus is concave (“spoon-like”). The ventral division of the median apophysis is conspicuous ventrally. The retrolateral tibial apophysis presents a whitish, not heavily sclerotized lateral projection (LP). The female epigynum presents a slightly projected posterior median margin and rounded to elliptical short spermathecae. Based on the information available from the specimens´s labels, indicates that this spider genus occur in the same type of environment of the other Brazilian genera of Trechaleidae. The distribution of this spider genus is restricted to Central and South America. One of the main difficulties on working with this spider genus is that, in some areas of occurrence of it, is neither collections or Arachnologists, like Panama, Bolivia, Venezuela.The main objective of this work is to redescribe the five known species: E. estebanensis (Simon), E. jullieni (Simon), E. minor Petrunkevitch, E. nesiotes Chamberlin and E. velox O. P. -Cambridge, and describe eighteen new species: E. baeza (Ecuador), E. bartica (Guyana), E. braslandia. (Brazil), E. bonaldoi (Brazil) E. caliensis (Colombia), E. chickeringi (Honduras), E. colonche (Ecuador), E. eberhardi (Costa Rica, Panama), E. hara (Peru), E. huanuco (Peru), E. huarinilla (Bolivia), E. igarape (Brazil), E. kuyuwiniensis (Guyana), E. maya (Honduras, Panama), E. paraensis (Brazil), E. pecki (Costa Rica), E. riotopo (Ecuador) and E. rothi (Ecuador). After the examination of the holotype of E. approximata (O. P. -Cambridge) was noted that the original description was based on an immature female, so it is considered as species inquirenda.