O subgênero Centris (Aphemisia) Ayala: notas complementares e descrição de uma nova espécie (Hymenoptera, Apoidea)

The subgenus Centris (Aphemisia) Ayala: complementary notes and description of a new species (Hymenoptera, Apoidea). Centris (Aphemisia) Ayala, 2002 is redescribed pointing out some others important distinctive characters. The nominal species designated by Ayala as the type species, Centris plumipes Smith, 1854, is preocupied by Centris plumipes (Fabricius, 1781) originaly described in Apis Linnaeus. Being so, Centris xanthosara nom. nov. is proposed to replace Centris plumipes Smith, 1854 non Centris plumipes (Fabricius, 1781). Two other species are considered to belong in this subgenus: Centris (Aphemisia) lilacina Cockerell, 1919, and Centris (Aphemisia) plumbea sp. nov., from Tingo Maria, Peru. A key for the species, illustrations, and geographical distribution are also added.