Beetle vs Complex-toothed Flying Squirrel

Silvanus lewisi compared with Trogopterus xanthipes

Key Differences

• Beetle is Not Evaluated while Complex-toothed Flying Squirrel is Near Threatened.

Taxonomic Classification

Rank	Beetle	Complex-toothed Flying Squirrel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Coleoptera (Beetles)	Rodentia (Rodents)
Family	Silvanidae	Sciuridae (Squirrels)
Genus	Silvanus	Trogopterus
Species	Silvanus lewisi	Trogopterus xanthipes

Evolutionary Relationship

Beetle and Complex-toothed Flying Squirrel share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Beetle

NE — Not Evaluated

Complex-toothed Flying Squirrel

NT — Near Threatened

Physical Characteristics

Attribute	Beetle	Complex-toothed Flying Squirrel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and North America (United States).

Complex-toothed Flying Squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Beetle

The Beetle (Silvanus lewisi) is a species in the genus Silvanus. Typically found in virtually all terrestrial and freshwater habitats. The species is documented in scientific literature under the name Silvanus lewisi.

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.