Mus setulosus Peters, 1876

Mus setulosus Peters, 1876 View in CoL

Mus ( Nannomys) setulosus Peters, 1876: 480 View in CoL .

REMARKS

The karyotypes of two specimens displayed the standard karyotype for this species (2N =36, NFa =34), the Cyt B sequencing allowed to attribute these specimens to M. setulosus . This karyotype is similar to the one of a M. setulosus from Sangassou (forest Guinea) ( Kan Kouassi et al. 2008). The tail length is shorter than HB length. The dorsal pelage is grey light brown and the belly white. There is a line of yellow-light brown hairs at the demarcation between the dorsal and ventral parts. The tail is short and unicolored. This species is characterized by being larger than M. baoulei and M. minutoides ( Tables 7 View TABLE ; 8 View TABLE ). The skull displays a short and wide rostrum, a large CIO and a rounded braincase. In ventral view, the incisive foramina are large and enter into the palate before the first lobe of the M1/. The tympanic bullae are small and oval. Mus setulosus skulls display similar sizes on both sides of Mount Nimba. Their respective values of skull distances fit well with previous work for Guinean and Ivorian specimens molecularly typed by Kan Kouassi et al. (2008). Mus setulosus has a longer toothrow compared to M. baoulei and M. minutoides and the m3 has two lobes as opposed to one in the other species. The prelobe of the upper M1 is large and not elongated.