Female Genital Morphology in the Secondarily Haplogyne Spider Genus Glenognatha Simon, 1887 (Araneae, Tetragnathidae), with Comments on its Phylogenetic Significance

Autor(es)

Cabra-Garcia, Jimmy ^{[1, 2]} ; Hormiga, Gustavo ^[3] ; Brescovit, Antonio D. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Biociencias, Dept Zool, BR-05508090 Sao Paulo - Brazil

^[2] Inst Butantan, Lab Especial Colecoes Zool, BR-05503900 Sao Paulo - Brazil

^[3] George Washington Univ, Dept Biol Sci, Washington, DC 20052 - USA

• Tipo de documento: Artigo Científico
• Fonte: Journal of Morphology; v. 275, n. 9, p. 1027-1040, SEP 2014.
• Citações Web of Science: 1

Resumo

Female genital morphology of secondarily haplogyne spiders has been poorly studied, hampering the analysis of its possible phylogenetic significance. We conduct a comparative morphological study of 12 species of the secondarily haplogyne spider genus Glenognatha Simon, 1887 using scanning electron microscopy. Representatives of the closely related genera Pachygnatha Sundevall, 1823 and Dyschiriognatha Simon, 1893 were also examined. The female genitalia of Glenognatha, Dyschiriognatha, and Pachygnatha species examined are composed of a spiracle-shape gonopore, a membranous chamber, a pair of copulatory ducts (CD) leading to spermathecae and a large uterus externus (UE). The most significant variation among Glenognatha species, previously unregistered within Araneoidea, is related with the absence or presence of CD and spermathecae. In addition, several characters as the form and distribution of long stem gland ductules and compartmentalization of the UE may be important for phylogenetic inference at species and generic level. Our results corroborate the close relationship between Dyshiriognatha and Glenognatha. A table with potentially informative female genitalic characters for phylogenetic inference within Glenognatha is provided. Understanding the general structure of the female genitalia in secondarily haplogyne taxa is a crucial step in order to propose characters for phylogenetic inference and to understand its possible functional significance. J. Morphol. 275:1027-1040, 2014. (c) 2014 Wiley Periodicals, Inc. (AU)

• Processo FAPESP: 12/16412-3 - Revisão e análise do material tipo das espécies de Glenognatha Simon, 1887 (Araneae, Tetragnathidae) depositadas em museus dos Estados Unidos e avaliação de caracteres genitais e do sistema respiratório para a reconstrução filogenética do gênero
• Beneficiário: Jimmy Jair Cabra Garcia
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Mestrado
• Processo FAPESP: 11/50689-0 - Sistemática de aranhas haplóginas neotropicais (Arachnida, Araneae)
• Beneficiário: Antonio Domingos Brescovit
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 11/14253-2 - Revisão e análise cladística do gênero Glenognatha Simon, 1887 (Araneae, Tetragnathidae)
• Beneficiário: Jimmy Jair Cabra Garcia
• Modalidade de apoio: Bolsas no Brasil - Mestrado