ホンケワタガモ vs Complex-toothed Flying Squirrel

Somateria mollissima compared with Trogopterus xanthipes

Taxonomic Classification

Rank	ホンケワタガモ	Complex-toothed Flying Squirrel
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Aves (鳥類)	Mammalia (哺乳類)
Order	Anseriformes (カモ目)	Rodentia (ネズミ目)
Family	Anatidae	Sciuridae (Squirrels)
Genus	Somateria	Trogopterus
Species	Somateria mollissima	Trogopterus xanthipes

Evolutionary Relationship

ホンケワタガモ and Complex-toothed Flying Squirrel share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

ホンケワタガモ

NT — Near Threatened

Complex-toothed Flying Squirrel

NT — Near Threatened

Physical Characteristics

Attribute	ホンケワタガモ	Complex-toothed Flying Squirrel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

ホンケワタガモ

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found across Europe (5 countries) and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Complex-toothed Flying Squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

ホンケワタガモ

ホンケワタガモ（Somateria mollissima）はIUCNレッドリストで準絶滅危惧（NT）に分類されている。脅威のある種の基準に近く、保全措置がなければ脆弱になる可能性がある。

Complex-toothed Flying Squirrel

<em>Trogopterus xanthipes</em>, the complex-toothed flying squirrel, is a medium-sized gliding rodent in the family Pteromyidae endemic to China, where it inhabits montane broadleaf and mixed forests at elevations typically between 1,000 and 2,700 metres in provinces including Sichuan, Yunnan, Guizhou, Hubei, and neighbouring regions. This species is the sole member of the genus Trogopterus and is distinguished by complex tooth morphology compared to other flying squirrels. Like all flying squirrels, it possesses a patagium — a gliding membrane stretching between fore and hind limbs — that enables it to glide between trees rather than undertake powered flight. The complex-toothed flying squirrel is nocturnal and arboreal, spending its days sheltering in tree hollows and foraging at night for leaves, bark, seeds, and fungi. Its faeces, known as Wuflingzhi, have been used in traditional Chinese medicine for centuries, leading to trapping pressure in parts of its range. The IUCN classifies this species as Near Threatened, reflecting population decline driven by overhunting for medicinal use and ongoing habitat loss from logging and agricultural encroachment in montane forests. Biological traits including average body mass, lifespan, litter size, and home range are partially documented but detailed population estimates are limited. Conservation measures include legal protections under Chinese wildlife law.