Guianan bonneted bat

The Guianan bonneted bat, also called Thomas's mastiff bat, Eumops maurus, is a free-tailed bat of South America that is poorly understood because it is difficult to capture and may be one of the rarest Neotropical bats. It is found mainly in Guyana and Suriname, possibly also in neighbouring parts of Brazil and Venezuela, and a surprising report has come from Ecuador. It has dark chocolate brown fur with a narrow band of white hair along each flank, large rounded ears, a body about 18 centimetres long and a tail about 4 centimetres long. Males have a prominent throat gland that is missing or very small in females. It has been found in humid lowland evergreen forests and in pine plantations, and it is probably threatened by habitat loss.