Sexual Dimorphism
T. mauritianus does not display an abundance of visual sexual dimorphism concerning their size or coloration. Outside of the breeding season, the male reproductive organs are held in the abdominal cavity. During the breeding season, the genitals appear and become darker in color. The males possess a gular sac that lies at the base of the jaw. This gland releases secretions that help males mark their territories and attract females during the mating season. The gular sac is present in some females, depending on which region Africa the bat is found. In areas such as Nigeria and Mozambique, the sac is absent in females, in West Africa it is reduced to a vestigial pouch, and in the Sudan it is fully present in both sexes, just more developed in males. In females, the genitals are located on the ventral side of the abdomen and are marked by two pigmented patches. During the mating season, they become deeply pigmented and extend out, becoming more prominent before and just after mating.
Read more about this topic: Mauritian Tomb Bat, Description