Typomys trivirgatus ( Temminck, 1853 )

Denys, Christiane, Missoup, Alain Didier, Nicolas, Violaine, Sylla, Morlaye, Douno, Mory, Kadjo, Blaise, Lalis, Aude & Monadjem, Ara, 2025, Annotated checklist of rodents from a biodiversity hotspot, Mount Nimba (West Africa), Zoosystema 47 (27), pp. 617-689 : 636

Typomys trivirgatus ( Temminck, 1853)

Mus trivirgatus Temminck, 1853: 377 .

Hybomys trivirgatus trivirgatus – Rosevear 1969: 381.

Hybomys trivirgatus – Carleton & Robbins 1985: 956.

REMARKS

The three new specimens collected by us exhibit three parallel black stripes on the dorsal pelage and fit well within the variability of the previously collected Typomys of the same species on Mount Nimba concerning their external measurements ( Table 7 ). The skulls display the typical short incisor foramina and dental pattern of Typomys . There are no real differences in skull size between T. planifrons and T. trivirgatus in our sample ( Table 8 ).

The newly collected specimen MNHN-ZM-2014-1027 has a broken skull. The specimen MNHN-ZM-2021-1695 has incisive foramina ending well before the first root of the upper M1/. The CIO is wide and the braincase is globular in shape in the parietal region. The molar rows are relatively small and parallel. The tympanic bullae are small and the occipital foramen very large.