Black-fronted Titi vs Coastal Silver-stiletto

Callicebus nigrifrons compared with Acrosathe annulata

Key Differences

• Black-fronted Titi is Near Threatened while Coastal Silver-stiletto is Least Concern.

Taxonomic Classification

Rank	Black-fronted Titi	Coastal Silver-stiletto
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Arthropoda (สัตว์ขาปล้อง)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Insecta (แมลง)
Order	Primates (อันดับวานร)	Diptera (แมลงวัน)
Family	Pitheciidae	Therevidae
Genus	Callicebus	Acrosathe
Species	Callicebus nigrifrons	Acrosathe annulata

Evolutionary Relationship

Black-fronted Titi and Coastal Silver-stiletto share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

Black-fronted Titi

NT — Near Threatened

Coastal Silver-stiletto

LC — Least Concern

Physical Characteristics

Attribute	Black-fronted Titi	Coastal Silver-stiletto
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-fronted Titi

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-fronted Titi

The Black-fronted Titi (Callicebus nigrifrons) is a species in the genus Callicebus. It is currently classified as Near Threatened 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.