Bats of the Paranã River Valley, Tocantins and Goiás states, Central Brazil Author Bezerra, Alexandra M. R. Departamento de Zoologia, Instituto de Biologia, Universidade de Brasília (CEP 70910 - 900), Brasília, DF, Brazil. E-mail: abezerra @ fst. com. br abezerra@fst.com.br Author Marinho-Filho, Jader Departamento de Zoologia, Instituto de Biologia, Universidade de Brasília (CEP 70910 - 900), Brasília, DF, Brazil. E-mail: jmarinho @ unb. br text Zootaxa 2010 2010-12-17 2725 41 56 journal article 1175-5326 Artibeus obscurus (Schinz 1821) Distribution. Colombia , Venezuela , Guianas, Ecuador , Peru , and Brazil . Records for the Brazil are from the states of Acre , Amazonas, Amapá , Bahia , Ceará , Espírito Santo , Minas Gerais , Mato Grosso , Pará, Paraíba , Paraná , Pernambuco , Piauí , Rio de Janeiro , Rondônia , Roraima , Santa Catarina , and São Paulo ( Peracchi et al . 2006 ). Habitat. Inhabits almost exclusively moist environments as such rainforests, cloud forests, and semideciduous forests ( Haynes & Lee 2004 ). This species was collected in all sampled localities ( 14 o 30’ 21.09” S , 46 o 45’ 29.37” W in Alvorada do Norte , GO ; 13°46’ 15.1” S , 46° 37’ 29.2” W in São Domingos, GO ; and 12° 54’ 50.8” S , 47° 34’ 0.7” W in Paranã , TO), always near to water sources . Comments. Similarities between A. obscurus and A. jamaicensis have raised taxonomic confusion due to the variation in morphology of the latter ( Haynes & Lee 2004 ). Both species are very similar and have almost the same size, but A . jamaicensis is slightly larger and exhibits a more prominent rostrum. Voucher specimens. 12 females – CHUNB 1178 , 1179 , 1180 , 1181 , 1182 , 1183 , 1185 , 1186 , 1187 , 1195 , 1196 , and 1214 ; four males – CHUNB 1184 , 1189 , 1235 , and 1236 .