Myosorex jejei is a shrew known from specimen records in the Kahuzi-Biega area of the Democratic Republic of the Congo. Its coat is dark gray with brown hair tips. The 2010 description reports collections from wetlands and the surrounding montane forest.
The species description says the coat is only slightly bicolored and appears dark gray overall. Dorsal hairs are dark slate gray at the base and brown at the tips. The tail is moderately long, thin, and unicolored, without long bristle hairs.
Myosorex jejei shares sites in Kahuzi-Biega National Park with Myosorex babaulti. It has a small, slender skull and very short claws, averaging 2.1 millimetres on the forefeet and 1.8 millimetres on the hind feet.
A 2010 study grouped species by skull proportions. Myosorex jejei belonged to the narrow-headed group, whereas its neighbour Myosorex babaulti belonged to the broad-headed group. Related animals with different body forms thus inhabited the same forest.
The study used specimens from surveys in 2005 and 2007, measuring skulls and teeth and comparing shapes under a microscope. These detailed comparisons revealed differences between small animals and documented several Myosorex species sharing a forest in this region.
An extinction-risk assessment has not been added yet.
Forest fragmentation is a conservation concern in Kahuzi-Biega National Park. In 2026, the World Heritage Committee expressed concern about lost forest connectivity and signs of logging revealed by a 2024 high-altitude survey. It also reported that insecurity had interrupted restoration plans. Retaining forest and wetland habitats and surveying the shrew are relevant conservation priorities.