Systematic review of Promitobates Roewer, 1913 and cladistic analysis of Mitobatinae Simon, 1879 (Arachnida: Opiliones: Gonyleptidae)

摘要

A cladistic analysis of the genera of Mitobatinae and species of Promitobates Roewer, is presented. Only one equally most parsimonious tree was obtained (L=273, CI=0.36; RI=0.73) from a data matrix of 77 equally weighted characters. Mitobatinae is recovered as a monophyletic group, with low Bremer support, sister to ("Pachylinae" + Bourguyiinae). Despirus parvulus, Roewer is sister to the remaining mitobatines, which are divided into two major clades: [1] one that possesses a roughly rectangular body, and males and females with coxa and trochanter IV without large apophyses, including the genera Ischnotherus Kury, Encheiridium Kury, Metamitobates Roewer, Ruschia Mello-Leitao, Mitobatula Roewer, and Mitobates Sundevall; and [2] one that possesses thebody roughly pyriform, with evident sexual dimorphism of coxa and trochanter IV, in which males have a large apophysis on coxa IV and tubercles on trochanter IV, including the genera Discocyrtoides Mello-Leitao, Longiperna Roewer, Neoancistrotus Mello-Leitao, and Promitobates. A taxonomic review of Promitobates and a new classification of its species, supported by results of the cladistic analysis, are presented. Based on these results P. intermedins (Mello-Leitao) comb, n., and P. nigripes (Mello-Leitao) comb, n., are revalidated and removed from the synonymy of P. ornatus (Mello-Leitao). The following synonymies are proposed: Leonardosia nitida Mello-Leitao = P. nigripes (Mello-Leitao), Ancistrotellus hauseri Silhavy = P. viridigranulatus (Soares &Soares), P. margaritatus Roewer, 1931 = P. ornatus (Mello-Leitao, 1922) and P. mendax H. Soares, 1945 = P. hatschbachi H. Soares. Promitobates granulosissimus Mello-Leitao and P. hexacanthus Koch are considered species inquirendae. Four new species fromBrazil are described: P. ale sp. n. (type locality: Ano Bom, Santa Catarina); P. trapista sp. n. (type locality: Reserva Morro Grande, Sao Paulo); P. weissbier sp. n. (type locality: Ribeirao Pires, Sao Paulo), and P lager sp. n. (type locality: Jacarepagua, Rio de Janeiro).