Taxonomic review and phylogenetic analysis of genera Homoeomma Ausserer, 1871 (Araneae, Theraphosidae)

Author(s)

Yamamoto, Flávio Uemori

• Document type: Master's Dissertation
• Press: São Paulo. [2008]. 133 f., ilustrações.
• Institution: Universidade de São Paulo (USP). Instituto de Biociências
• Defense date: 08 out. 2008

Examining board members

Brescovit, Antonio Domingos; Rheims, Cristina Anne; Rocha, Ricardo Pinto da

• Advisor: Brescovit, Antonio Domingos
• Field of knowledge: Biological Sciences - Zoology
• Indexed in: Banco de Dados Bibliográficos da USP-DEDALUS; Biblioteca Digital de Teses e Dissertações - USP
• Location: Universidade de São Paulo. Biblioteca do Instituto de Biociências

Abstract

Theraphosidae is the larger family within suborder Mygalomorphae, with 112 genera and 908 species. It is considered a monophyletic group, divided into nine subfamilies. The subfamily Theraphosinae is restricted to America continent. It is characterized by the presence of a papal bulb with wide and thick embulus presenting keels, wide subtegulum, extending down the bulb to half of tegulum length and by the presence of urticating hairs type I, III and IV. The present work aims the increase of the taxonomic and phylogenetic subfamily knowledge, throughout the study of Homoeomma genera Ausserer, 1871. Homoeomma was revised in 1972, including ten species on it. Nowadays, the genera has 14 species, with distribution restricted to South America (Argentina, Brazil, Colombia, Peru e Uruguay). The Homoeomma pictum holotype presents copulatory bulb and tibial apophysis of leg I that resemble Thrixopelma, so the species is transfered to these genus. The type of Homoeomma peruvianum was also examined and probably do not belong to the genus. Unfortunately, it was not possible to establish a new genus to this species. H. nigrum´s holotype, a female presenting a severed spermathecae, wasn't examined. These two species are considered species inquireda. H. stradlingi e H. strabo are established as junior-synonyms of H. familiare. And Homoeomma hirsutum is considered junior-synonym of. 7 The eight remaining species of Homoeomma were included in cladistic analysis, enclosed with Grammostola mollicoma, Magulla obesa, Maraca cabocla, Plesiopelma flavohirtum, P. longisternalis, Tmesiphantes nubilus, Gen. n. sp.1. Oligoxytre caatinga (subfamily Ischnocolinae) was used to set the root. The analysis resulted in two equally parsimonic trees, with 73 steps... (AU)

• FAPESP's process: 06/53070-2 - Revision taxonomic and cladistic analysis of the genus Homoeomma Ausserer, 1871 (Araneae, Theraphosidae)
• Grantee: Flávio Uemori Yamamoto
• Support type: Scholarships in Brazil - Master