Black-spotted Cuscus vs Coastal Silver-stiletto

Spilocuscus rufoniger compared with Acrosathe annulata

Key Differences

• Black-spotted Cuscus is Critically Endangered while Coastal Silver-stiletto is Least Concern.

Taxonomic Classification

Rank	Black-spotted Cuscus	Coastal Silver-stiletto
Kingdom same	Animalia (حيوانات)	Animalia (حيوانات)
Phylum	Chordata (حبليات)	Arthropoda (مفصليات الأرجل)
Class	Mammalia (ثدييات)	Insecta (حشرات)
Order	Diprotodontia (ثنائيات الأسنان الأمامية)	Diptera (ذوات الجناحين)
Family	Phalangeridae	Therevidae
Genus	Spilocuscus	Acrosathe
Species	Spilocuscus rufoniger	Acrosathe annulata

Evolutionary Relationship

Black-spotted Cuscus and Coastal Silver-stiletto share a common ancestor at the Kingdom level: Animalia. (حيوانات)

Conservation Status

Black-spotted Cuscus

CR — Critically Endangered

Coastal Silver-stiletto

LC — Least Concern

Physical Characteristics

Attribute	Black-spotted Cuscus	Coastal Silver-stiletto
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-spotted Cuscus

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Coastal Silver-stiletto

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Black-spotted Cuscus

The Black-spotted Cuscus (Spilocuscus rufoniger) is a species in the genus Spilocuscus. It is currently classified as Critically Endangered on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Coastal Silver-stiletto

Coastal silver stiletto (Acrosathe annulata) is a slender robber fly in the family Therevidae, native to northwestern Europe, including the United Kingdom, France, the Netherlands, Belgium, and Scandinavia. Adults are found on coastal sand dunes and sandy heathland, where they perch on bare sand to ambush small flying insects. Stiletto flies in the family Therevidae are characterised by a slender body, long pointed abdomen, and predatory habits; adults prey on a variety of small dipterans and other flying insects during warm, sunny periods. Larvae develop in sandy soil, where they are also predatory, feeding on other invertebrate larvae. Acrosathe annulata is a habitat specialist restricted to open, sandy coastal habitats with sparse vegetation—environments that have declined substantially across northwestern Europe due to dune stabilisation, recreational disturbance, and the cessation of traditional dune management. The IUCN lists it as Least Concern, though regional conservation bodies in the United Kingdom have flagged population declines. It is considered an indicator of high-quality coastal sand dune habitats and is monitored through national invertebrate surveys.