Chapa pygmy dormouse

{{Short description|Subspecies of rodent}}

{{Multiple issues|

{{More citations needed|date=May 2025}}

{{More footnotes needed|date=May 2025}}

{{Update|part=whole|reason=MDD recognizes it as a full species, as do most other taxonomic DBs|date=May 2025}}

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{{Use dmy dates|date=June 2023}}

{{subspeciesbox

| name = Chapa pygmy dormouse

| status = CR

| status_system = IUCN2.3

| genus = Typhlomys

| species = cinereus

| subspecies = chapensis

| authority = (Osgood, 1932)

}}

The Chapa pygmy dormouse or Vietnamese pygmy dormouse (Typhlomys cinereus chapensis) is a rodent endemic to Vietnam; this nocturnal creature is 7-10cm long (3-4 inches), with a tail of 10-13cm (4-5 inches) and long ears.{{cite web |url= https://www.researchgate.net/publication/289225332 |title= Locomotion and postures of the Vietnamese pygmy dormouse Typhlomys chapensis (Platacanthomyidea, Rodentia): climbing and leaping in the blind |last= Youlatos |first= Typhlomys |date= September 1, 2020 |website= Research Gate |publisher= |access-date= April 28, 2025|quote=}}

In 2014, it was mainly found to the west of the Red River, in north Vietnam and southern Yunan Province in China.{{cite web |url= https://academic.oup.com/jmammal/article/98/3/731/3072268 |title= Phylogeny and systematic revision of the genus Typhlomys (Rodentia, Platacanthomyidae), with description of a new species |last= Chen |first= Feng |date= May 29, 2017 |website= Oxford University Press |publisher= Journal of Mammalogy, Volume 98, Issue 3, page 731 |access-date= April 28, 2025 |quote=}}

It is often seen as a subspecies of the Chinese pygmy dormouse (T. cinereus), along with T. ci daloushanensis, T. ci. Guangxiensis and T. ci. Jingdongensis; in 2014, it was seen by Abramov et al as an individual species and separate from T. cinereus.

At the start of the 21st century, it was listed as a critically endangered species.{{cite web |url= https://animaldiversity.org/accounts/Platacanthomyidae/ |title= Platacanthomyidae |author= |date= |website= Animal Diversity |publisher= |access-date= April 28, 2025 |quote=}} By 2017, the status of the general T. cincereus was as a creature of ‘least concern’.{{cite web |url= https://www.iucnredlist.org/species/22605/22240953 |title= Soft Furred Tree Mouse: Typhlomys cincereus |author= |date= |website= IUCN Red List |publisher= |access-date= April 28, 2025 |quote=}}