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| Author(s): |
Lina Maria Almeida Silva
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. , ilustrações. |
| Institution: | Universidade de São Paulo (USP). Instituto de Biociências (IBIOC/SB) |
| Defense date: | 2009-03-03 |
| Examining board members: |
Antonio Domingos Brescovit;
Ricardo Pinto da Rocha;
Adalberto José dos Santos
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| Advisor: | Antonio Domingos Brescovit |
| 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; IB/M-1401 |
| Abstract | |
The family Titanoecidae was proposed by Lehtinen to include five genera: Titanoeca Thorell (31 spp.), Nurscia Simon (4 spp.), Goeldia Keyserling, (8 spp.), Pandava Lehtinen (2 spp.) and Anuvinda Lehtinen (1 sp.). The family is diagnosed by the presence of a complex dorso-apical fold on the tibia of the male palp. Recent phylogenetic analyses point towards a close relationship between Titanoecidae and Phyxelididae but knowledge on the relations between its genera and species remain uncertain. A cladistic analysis for Titanoecidae was carried out based on parsimony and using 92 morphological characters. The in-group comprised 32 taxa, including the type species of all genera plus 15 species of Goeldia, six Titanoeca, four Nurcia, one Anuvinda and one Pandava. The out-group included species of Phyxelididae (3 spp.) Amaurobiidae (1sp.) Tengellidae (1 sp.) Zoropsidae (1sp.) and Nicodamidae (2 sp.).Results show that Titanoecidae is a monophyletic group and can be divided in two major clades: one including Goeldia and Anuvinda sister to Pandava, herein denominated Goeldinae subfam. nov. and the other, Titanoecinae Lehtinen, including Titanoeca and Nurscia. Based on the results of the cladistic analysis Titanoeca guayaquilensis, from Ecuador, is transferred to Goeldia. In addition The genera Anuvinda and Goeldia are revised. The male of Goeldia nigra and the female of G. guayaquilensis are described for the first time and seven species of Goeldia are newly described: four from Brazil, one from Colombia and one from Peru. (AU) | |
| FAPESP's process: | 06/05453-0 - Revision and cladistic analysis of the genus Goeldia Keyserling, 1891 (Araneae: Titanoecidae) |
| Grantee: | Lina Maria Almeida Silva |
| Support Opportunities: | Scholarships in Brazil - Master |