![]() corniculatus Roewer 1929), Pygophalangodus Mello-Leitão 1931b (type species P. catharinensis Mello-Leitão 1927), Pareusarcus Roewer 1929 (type species P. armatus Perty 1833) = Metagraphinotus Mello-Leitão 1927 (type species M. The following generic synonymies are proposed: Eusarcus Perty 1833 (type species E. Pygophalangodus gemignanii uruguayensis Ringuelet 1955a and Pygophalangodus gemignanii gemignanii Mello-Leitão 1931b are here elevated to the category of species, and the following new combinations are proposed: E. Two equally parsimonious trees were found (L=319 C.I.=0.26, R.I.=0.61). The data matrix has 67 characters: 14 from dorsal scutum and pedipalp, 38 from male legs and 15 from male genitalia. A cladistic analysis was performed with the 34 valid species of Eusarcus and 11 species belonging to certain Gonyleptidae subfamilies. The genus is reviewed and a new classification is proposed based on a cladistic analysis. ![]() Usarcus Perty 1833 is one of the oldest described genera of Pachylinae, comprising 36 species distributed from northeastern to southern Brazil (including the central west region), northeastern Argentina, eastern Paraguay and Uruguay.
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