Description
The yellow-winged bat has a total length of 58–80 mm and a body weight of 28-36 g. Females tend to be slightly larger than males. The wingspan averages 36 cm. This species pelage is made of long hairs that are typically pearl grey or slaty gray. Males may have greenish-yellow fur on the hindparts and on the ventral surfaces. As its name suggests, the bat has wings that are reddish-yellow which is also the color of its other membranes as well as its noseleaf and ears. The membranes are largely hairless although there is some fur on the upper arms. The ears are fairly long and have a spiky tragus. It has an elongated noseleaf with a blunt but pointed tip. Although the yellow-winged bat has an advanced interfemoral membrane, it lacks an external tail. The dental formula is . Glands exist on the lower back of males and discharge a yellow substance. Females have false nipples near the anus and are used by the young to hold on to.
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