Revision of the neotropical genus Xeropigo (Araneae, corinnidae, corinninae)

Revision of the neotropical genus Xeropigo (Araneae, Corinnidae, Corinninae). The genus Xeropigo O. Pickard-Cambridge, 1882 is revised, with the proposition of seven neotropical new species: X. candango, based in males and females from Brasilia, Distrito Federal and Goias, Brazil; X. rheimsae, males from Goias, Brazil; X. camilae, males and females from north and middle west Brazil; X. cotijuba, males and females from Guiana and north and middle west Brazil; X. pachitea, males and females from Huanuco and Cajamarca, Peru; X. perene, females from Junin and Loreto, Peru; X. brescoviti, males from Beni, Bolivia. The previously known species, X. tridentiger (Pickard-Cambridge, 1869), the type-species, described from Santa Helena Island, Atlantic Ocean, but also known from South and Central Americas, and X. smedigari (Caporiacco, 1955) from north Venezuela and Trinidad, are rediagnosed. New records and illustrations of X. tridentiger and a key for all known species are given.