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Revision and cladistic analysis of the genus Goeldia Keyserling, 1891 (Araneae: Titanoecidae)

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


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)

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ALMEIDA-SILVA, LINA M.; CAMACHO, AGUSTIN; BRESCOVIT, ANTONIO D.; LUCAS, SYLVIA M.; BRAZIL, TANIA K.. Redescription and notes on the natural history of the arboreal tarantula Iridopelma seladonium (Araneae: Theraphosidae: Aviculariinae). Revista Brasileira de Zoologia, v. 25, n. 4, p. 728-736, . (06/05453-0)
LINA M. ALMEIDA-SILVA; ANTONIO D. BRESCOVIT; SIDCLAY CALAÇA DIAS. A new species of Goeldia (Araneae: Titanoecidae) with notes on its natural history. Zoologia, v. 26, n. 2, p. 363-368, . (06/05453-0)
ALMEIDA-SILVA, LINA M.; BRESCOVIT, ANTONIO D.; GRISWOLD, CHARLES E.. On the poorly known genus Anuvinda Lehtinen, 1967 (Araneae: Titanoecidae). Zootaxa, n. 2266, p. 61-68, . (06/05453-0)
ALMEIDA-SILVA‚ L.M.; BRESCOVIT‚ A.D.; GRISWOLD‚ C.E.. On the poorly known genus Anuvinda Lehtinen‚ 1967 (Araneae: Titanoecidae). Zootaxa, v. 2266, p. 61-68, . (06/05453-0)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
SILVA, Lina Maria Almeida. Cladistic analysis of Titanoecidae and revision of the genera Goeldia and Anuvinda (Arachnida: Araneae). 2009. Master's Dissertation - Universidade de São Paulo (USP). Instituto de Biociências (IBIOC/SB) São Paulo.

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