Revision of Gypogyna Simon, 1900 (Araneae: Salticidae).

Gypogyna Simon, 1900 is revised. Three species are recognized and diagnosed. The type species, Gypogyna forceps Simon, 1900, is redescribed and recorded from several localities in South America. Gypogyna amazonica Ruiz sp. nov. is described based on a male from Manaus, Brazil. Gypogyna mexicana Ruiz Bustamante sp. nov. is described based on specimens of both sexes from the state of Jalisco, Mexico. In addition, some comments on cheliceral dentiton and genital morphology are discussed.

On four new species of the jumping spider genus Mago O. Pickard-Cambridge, 1882 from South America (Araneae: Salticidae).

Four new species of Mago O. Pickard-Cambridge, 1882 are described. Mago furcatus sp. nov. and Mago mimicus sp. nov. are described from Ecuador (Orellana and Napo provinces, respectively), both based only on the male holotypes. Both sexes of Mago pardo sp. nov. and the male of Mago apophysis sp. nov. are also described from the state of Pará, Brazil. A map with records of these species is given.

Taxonomic revision of Scopocira Simon, 1900 (Araneae: Salticidae).

The genus Scopocira Simon, 1900 is revised and six valid species are redescribed and illustrated: S. carinata Crane, 1945, S. dentichelis Simon, 1900, S. fuscimana (Mello-Leitão, 1941), S. histrio Simon, 1900, S. melanops (Taczanowski, 1871) and S. tenella Simon, 1900. The following synonymies are established: S. vivida (Peckham & Peckham, 1901) = S. histrio Simon, 1900 syn. nov.; S. panamena Chamberlin & Ivie, 1936 = S. dentichelis Simon, 1900 syn. nov. The males of S. fuscimana (Mello-Leitão, 1941) and S. melanops (Taczanowski, 1871) are described and illustrated for the first time. Both sexes of S. abaporu sp. nov., S. bicornia sp. nov., S. cepa sp. nov., S. cyrili sp. nov. and S. kunai sp. nov., and males of S. crotalica sp. nov., S. pterodactyla sp. nov. and S. sciosciae sp. nov., all eight from South America, are described and illustrated, increasing the present member list up to 14 species. Record maps are given. Scopocira atypica Mello-Leitão, 1922 is considered species inquirenda.