Brandt's bat (Myotis brandtii) was first discovered in Europe in 1958, but was only separated from the very similar species, the whiskered bat (Myotis mystacinus) in 1970. Both species have shaggy fur, which is light brown in colour with a golden sheen. The belly is a paler grey with yellowish tinges. The wing membrane, nose and ears are light brown. Distinguishing features between whiskered and Brandt's bats are in the shape of the tragus, the teeth and the penis, which in Brandt's bat has a club-shaped tip. Brandt's bats also tend to be somewhat lighter in colour and larger in size.