IUCN threat status:

Least Concern (LC)

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Shaw Mayer's, one-toothed or small-toothed shrew mouse or moss mouse (Pseudohydromys or Mayermys ellermani)

The Shaw mayer's shrew mouse a rodent. It belongs to the family Muridae and is most closely related to Pseudohydromys germani (Wikipedia). It has the smallest number of teeth of any rodent - just four incisors and four molars.

This mouse is endemic to New Guinea, where it has been recorded from scattered localities ranging from the Lake Habbema area (Indonesia) east to Milne Bay Province (Papua New Guinea) (Helgen et al 2008, Wikipedia). It has been recorded at altitudes of 1,200-3,000 m above sea level (Helgen et al 2008, Wikipedia) in montane moss forest habitat.

Some mice have been captured under logs (Helgen et al 2008), but the species is known from few individuals, probably as it is hard to trap (Helgen et al 2008). The species is listed as Least Concern as it has a wide distribution, is probably not uncommon and is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category (Helgen et al 2008). There seem to be no major threats to this small species, which is not sought by hunters (Helgen et al 2008). It may be threatened in parts of its range by forest disturbance (Helgen et al 2008). It is not known if it lives in any protected areas, but it is probably in Lorentz National Park (Indonesia) (Helgen et al 2008).


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