Burrowing Coqui vs Coastal Silver-stiletto

Eleutherodactylus unicolor compared with Acrosathe annulata

Key Differences

• Burrowing Coqui is Critically Endangered while Coastal Silver-stiletto is Least Concern.

Taxonomic Classification

Rank	Burrowing Coqui	Coastal Silver-stiletto
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Arthropoda (สัตว์ขาปล้อง)
Class	Amphibia (สัตว์สะเทินน้ำสะเทินบก)	Insecta (แมลง)
Order	Anura (อันดับกบ)	Diptera (แมลงวัน)
Family	Eleutherodactylidae	Therevidae
Genus	Eleutherodactylus	Acrosathe
Species	Eleutherodactylus unicolor	Acrosathe annulata

Evolutionary Relationship

Burrowing Coqui and Coastal Silver-stiletto share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

Burrowing Coqui

CR — Critically Endangered

Coastal Silver-stiletto

LC — Least Concern

Physical Characteristics

Attribute	Burrowing Coqui	Coastal Silver-stiletto
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Burrowing Coqui

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Coastal Silver-stiletto

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Burrowing Coqui

The Burrowing Coqui (Eleutherodactylus unicolor) is a species in the genus Eleutherodactylus. It is currently classified as Critically Endangered on the IUCN Red List. Typically found in freshwater habitats, moist forests, and wetlands.

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.