Brown eagle-ray vs Complex-toothed Flying Squirrel

Aetomylaeus milvus compared with Trogopterus xanthipes

Key Differences

• Brown eagle-ray is Endangered while Complex-toothed Flying Squirrel is Near Threatened.

Taxonomic Classification

Rank	Brown eagle-ray	Complex-toothed Flying Squirrel
Kingdom same	Animalia (hewan)	Animalia (hewan)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (mamalia)
Order	Myliobatiformes (Myliobatiformes)	Rodentia (hewan pengerat)
Family	Myliobatidae	Sciuridae (Squirrels)
Genus	Aetomylaeus	Trogopterus
Species	Aetomylaeus milvus	Trogopterus xanthipes

Evolutionary Relationship

Brown eagle-ray and Complex-toothed Flying Squirrel share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Brown eagle-ray

EN — Endangered

Complex-toothed Flying Squirrel

NT — Near Threatened

Physical Characteristics

Attribute	Brown eagle-ray	Complex-toothed Flying Squirrel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown eagle-ray

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Complex-toothed Flying Squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Brown eagle-ray

The Brown Eagle-ray (Aetomylaeus milvus) is a species in the genus Aetomylaeus. It is currently classified as Endangered on the IUCN Red List. Native to Asia, inhabiting ecosystems characteristic of the region.

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.