| Grant number: | 06/05453-0 |
| Support Opportunities: | Scholarships in Brazil - Master |
| Effective date (Start): | April 01, 2007 |
| Effective date (End): | October 31, 2008 |
| Field of knowledge: | Biological Sciences - Zoology - Taxonomy of Recent Groups |
| Principal Investigator: | Antonio Domingos Brescovit |
| Grantee: | Lina Maria Almeida Silva |
| Host Institution: | Instituto Butantan. Secretaria da Saúde (São Paulo - Estado). São Paulo , SP, Brazil |
| Associated research grant: | 99/05446-8 - Biodiversity of Arachnida and Myriapoda of the State of São Paulo, AP.BTA.TEM |
Abstract The spider family Titanoecidae was proposed by Lehtinen in 1967 to group the genera Anuvinda, Goeldia, Nurscia, Pandava and Titanoeca. The original diagnosis for the family includes eight characters: short and ovalthat abdomen with two rows of well-defined white stripes; absence of tarsal trichobothria; epigynum with a median septum; vulva with spiral ducts; male palpal tibia with a lateroapical complex of apophyses; thin and apically coiled embolus embolus thin and apically coiled and median apophysis basal, pointed apically. However, most of these characters are also present in some species of Amaurobiidae and Dictynidae, which leaves some doubts about the taxonomic status of the group. Recent descriptions of new characters and the proposition of phylogenetic hypotheses for entelegynae spiders have confirmed Titanoecidae monophyly. According to these hypotheses, Titanoecidae is closely related to the family Phyxelididae and other members of the "RTA" clade. The genus Goeldia is the only member of the family in the neotropical region, with six neotropical and two neartic species. Goeldia was never revised before, and the few descriptions available in the literature are devoid of acceptable illustrations. On the other hand, specimens of this genus are frequently found in inventories using pitfall traps. This project aims to revise Goeldia species, to map its distribution, to analyse its filogenetic relationships and to describe the new species found. In this way, we are going to examine type-specimens and other specimens of the genus deposited in 19 collections, beyond the species that will participate as outgroup in the cladistc analysis. All the identified species will be described and illustrated. The cladistic analysis will have Goeldia as ingroup and as outgroup Titanoecidae genera, Phyxelididae, Amaurobiidae and Dictynidae. This analysis will be based on morphologic characters and aim to describe the internal relations of the genus. (AU) | |
| News published in Agência FAPESP Newsletter about the scholarship: | |
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