The Bornean pithecheirops (''Pithecheirops otion'') is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

rodent Rodents (from Latin , 'to gnaw') are mammals of the Order (biology), order Rodentia ( ), which are characterized by a single pair of continuously growing incisors in each of the upper and Mandible, lower jaws. About 40% of all mammal specie ...

found in

Borneo Borneo () is the List of islands by area, third-largest island in the world, with an area of , and population of 23,053,723 (2020 national censuses). Situated at the geographic centre of Maritime Southeast Asia, it is one of the Greater Sunda ...

. It is

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...

in the

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

''Pithecheirops''. ''Pithecheirops'' is closely related to the genus ''

Pithecheir ''Pithecheir'' is a genus of rodent in the family Muridae endemic to Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are sit ...

'', and the name is derived from ''Pithecheir'' and the Greek ''ops'', meaning "resembling". The only known example of this species was caught in the Danum Valley Field Centre in

Sabah Sabah () is a States and federal territories of Malaysia, state of Malaysia located in northern Borneo, in the region of East Malaysia. Sabah has land borders with the Malaysian state of Sarawak to the southwest and Indonesia's North Kalima ...

, north Borneo, at approximately 150 m.

Description

It is similar to species in the genus ''

'', both having long, dense, soft fur and broad feet. The species is distinguished by the appearance of the inner ear bones and

auditory bulla The tympanic part of the temporal bone is a curved plate of bone lying below the squamous part of the temporal bone, in front of the mastoid process, and surrounding the external part of the ear canal. It originates as a separate bone (tympanic b ...

Habitat

It was found in "dense viny roadside secondary brush on an abandoned logging road". The dominant habitat of the area is lowland

dipterocarp forest Dipterocarpaceae is a family of flowering plants with 22 genera and about 695 known species of mainly lowland tropical forest trees. Their distribution is pantropical, from northern South America to Africa, the Seychelles, India, Indochina, Indo ...

IUCN The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status ...

lists the species as Data Deficient due to this being the only known example of the species. There is no information on population numbers or distribution to indicate if the species is at risk or not. However given the loss of forest and human disturbance in the area and the fact that it was found in a degraded habitat, it may be somewhat adaptable to habitat loss.

References

External links

{{Taxonbar, from1=Q12266004, from2=Q146451 Old World rats and mice Taxa named by Louise H. Emmons