Sierra Madre shrew mouse

The Sierra Madre shrew mouse (Soricomys musseri) is a small rodent of the family Muridae that lives only in the Philippines. It is known from the type locality on Mount Cetaceo in Cagayan Province and from Mount Anacuao in the Sierra Madre of northeastern Luzon, in mossy forest between about 1,450 and 1,760 metres. Rickart, Heaney, Tabaranza and Balete described it in 1998, and it was later moved into the genus Soricomys. It is diurnal and lives on the ground, searching the leaf litter of the forest floor for insects, earthworms and other invertebrates. It has a slender snout, small eyes and dark reddish-brown fur, measures 91 to 105 millimetres from head to body and weighs 30 to 32 grams. It was known from only seven specimens, and the IUCN lists it as Least Concern because its range in the Penablanca Protected Landscape is remote and has no major threats.