Revista Brasileira de Zoologia 23 (2): 429-442, junho 2006In this paper, Itatiaya is revised and the type species I. modesta is redescribed and considered a senior synonym of Centroctenus sai Brescovit, 1996. In addition, seven new species are described. Notes on their distribution from Brazilian high mountain Atlantic Forest are presented.
MATERIAL AND METHODSThe material examined belongs to the following institutions (curators in parenthesis): IBSP, Instituto Butantan, São Paulo (A. D. Brescovit); MZSP, Museu de Zoologia, Universidade de São Paulo, São Paulo (R. Pinto da Rocha); MNRJ, Museu Nacional do Rio de Janeiro, Rio de Janeiro (A.B. Kury). All measurements are in milimiters. Descriptions and measurements follow BRESCOVIT (1996). Micrographs were obtained with a JEOL scanning electron microscope (JSM 840A) from the "Laboratório de Microscopia Eletrônica do Departamento de Física Geral, Instituto de Física, Universidade de São Paulo (USP)". Abbreviations: (RTA) retrolateral tibial apophysis, (AME) anterior median eyes, (ALE) anterior lateral eyes, (PME) posterior median eyes, (PLE) posterior lateral eyes, (p) prolateral, (r) retrolateral, (v) ventral.
Itatiaya Mello-Leitão, 1915Itatiaya Mello- Leitão, 1915: 139 (Type species Itatiaya modesta Mello-Leitão, 1915, by monotypy); Petrunkevitch, 1928: 147; Mello-Leitão, 1936: 1; Bryant, 1942: 9; Bonnet, 1961: 267; Lehtinen, 1967: 241; Brignoli, 1983: 589; Silva, 2003: 28;Platnick, 2005. Diagnosis. Species of Itatiaya resemble those of Asthenoctenus by the two recurved eye rows and the position of ALE distant from PME, but differ from this and the remaining ctenid genera by the combination of the following characters: cymbium with extensive dorsal scopulae (Fig. 28), except I. pucupucu sp. nov.; male palpal tibia with large, uniquely modified RTA and a slightly rounded subventral process covered by long hairs (Fig. 27), except I. pucupucu sp. nov.; median apophysis often pointed distally (Fig. 27); epigynum with large median plate and lateral field excavated and internally, spermathecae with a median constriction (Fig. 38).Description. Small ecribellate ctenids, with total length (male and female) ranging from 4.00 to 11.00. Sexual dimorphism not evident, but male carapace generally large and female generally more robust (Figs 25, 26). Carapace piriform; widest between legs II and III, truncated posteriorly. Thoracic groove longitudinal, long and deep, in the posterior third of the carapace. Eye arrangement in three rows, with the second row procurved, similar to Asthenoctenus (SIMÓ & EICKSTEDT 1994: fig. 1), with the ALE separated from AME, by at least one time AME diameter. Clypeus with long and erected black bristles. Eye diameters: ALE larger than AME; PME and PLE proportional in size, and both larger than ALE and AME. Eye interdistances: AME separated by slightly less than half their diameter, PME-PLE slightly less than AME diameter, ALE-PLE by the diameter of ALE, AME-PME by slightly less than half of AME diameter, AME-ALE by the third part of the AME ...