Pamphobeteus Pocock 1901

Bertani, Rogério, Fukushima, Caroline Sayuri & Júnior, Pedro Ismael Da Silva, 2008, Two new species of Pamphobeteus Pocock 1901 (Araneae: Mygalomorphae: Theraphosidae) from Brazil, with a new type of stridulatory organ, Zootaxa 1826, pp. 45-58 : 47

Pamphobeteus Pocock 1901

Lasiodora (ad part): Ausserer 1875: 192 –194; Simon 1888: 403–404.

Pamphobeteus Pocock 1901: 545 ; Pocock 1903: 91 –93; Roewer 1942: 251 –252; Bonnet 1958: 251; Schiapelli & Gerschman de Pikelin 1979: 295–296, Figs 25–31; Pérez-Miles et al. 1996: 54; Brignoli 1983: 133, 139; Platnick 2008.

Type species: – Lasiodora nigricolor Ausserer 1875 ; by original designation.

Diagnosis: – Pamphobeteus is most similar to Xenesthis Simon in males having an embolus with concave/ convex aspect in conjunction with the presence of a well developed apical keel that extends largely by the embolous edge, a well developed retrolateral keel ( Figs 1–3 ), and metatarsus I folding between the tibial spur processes ( Fig. 4 ); females have spermathecae largely fused, but still presenting vestiges of the two spermathecae in the distal region ( Fig. 6 ). Males and females can further be distinguished from Xenesthis by having the scopulae on metatarsi IV restricted to apical portion.

Distribution: – The species occurs in northwestern South American ( Colombia, Ecuador, Peru, Bolivia and Brazil) ( Fig. 19 ).

Figures

FIGURE 19. Records of Pamphobeteus species in South America, based on the type locality (included only species whose type is a male) and the examined material of P. crassifemur sp. nov. and P. grandis sp. nov. A geographic distribution with northern males having slender bulb and southern males having thicker embolus is visible.

FIGURES 1 – 6. Pamphobeteus crassifemur sp. nov .. 1 – 5 Male holotype. 1 – 3. Palpal bulb. 1, retrolateral, 2, prolateral, 3, dorsal. 4, Tibial apophysis, ventral. 5, Leg. III, dorsal. (6) Female paratype, spermathecae.