Aratathomas's yellow-shouldered bat

Aratathomas's yellow-shouldered bat, Sturnira aratathomasi, is a leaf-nosed bat of the family Phyllostomidae that lives along the Andes in Colombia, Ecuador, Peru and Venezuela, generally at high altitudes between about 1,650 and 3,165 metres. It was described as a new species in 1968, although the first specimens had been documented almost a century earlier, in 1874. The species name is a portmanteau of the surnames of Andrew Arata and Maurice Thomas, who supplied those specimens. Individuals weigh roughly 47 to 53 grams and have dark gray fur, and in 1987 it was called one of the largest fruit-eating New World bats and the largest member of its genus. The diet probably includes fruit, pollen and nectar. It was evaluated as least concern by the IUCN in 2016, though conversion of land to opium poppy farming is a threat.