Aegista diversifamilia

The shell is depressed and spherical, between 1.98 centimetres (0.78 in) and 3.24 centimetres (1.28 in) wide and 0.97 centimetres (0.38 in) to 1.68 centimetres (0.66 in) high. The shell is thin but strong, with a depressed conic spire. The aperture is ovate, 0.78 centimetres (0.31 in) to 1.32 centimetres (0.52 in) wide by 0.48 centimetres (0.19 in) to 1.05 centimetres (0.41 in) tall. The shell is a glossy chestnut- or yellow-brown, with a thin light brown stripe running along the periphery. The peristome is white.

Reproductive system. A. diversifamilia is hermaphroditic. The penis is long and thin, but shorter than the epiphallus. The dart sac is positioned in the vagina, which is equal in length to the penis. The spermoviduct is approximately four times as long as the penis and oviduct, and two times as long as the hermaphroditic duct. Individuals lay 20–30 white, 3 mm diameter round eggs per spawning.

A. diversifamilia is endemic to eastern Taiwan, bounded on the north by the Lanyang River. It is found in the Yilan and Hualien Counties, but not on Guishan Island. The species is usually found in lowland hardwood forests, living in or under moist leaf litter.