Arrowleaf elephant's ear vs Coastal Silver-stiletto

Xanthosoma sagittifolium compared with Acrosathe annulata

Key Differences

• Arrowleaf elephant's ear is Not Evaluated while Coastal Silver-stiletto is Least Concern.

Taxonomic Classification

Rank	Arrowleaf elephant's ear	Coastal Silver-stiletto
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Arthropoda (Arthropods)
Class	Liliopsida (Monocots)	Insecta (Insects)
Order	Alismatales (Alismatales)	Diptera (Diptera)
Family	Araceae	Therevidae
Genus	Xanthosoma	Acrosathe
Species	Xanthosoma sagittifolium	Acrosathe annulata

Conservation Status

Arrowleaf elephant's ear

NE — Not Evaluated

Coastal Silver-stiletto

LC — Least Concern

Physical Characteristics

Attribute	Arrowleaf elephant's ear	Coastal Silver-stiletto
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arrowleaf elephant's ear

Habitat

Inhabits tropical and subtropical moist broadleaf forests and mangrove forests and coastal wetlands spanning the Indomalayan and Neotropic realms.

Range

Widely distributed across Africa (9 countries), Asia (4 countries), North America (9 countries), Oceania and the Pacific (7 countries), and South America (Colombia).

Coastal Silver-stiletto

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Arrowleaf elephant's ear

The Arrowleaf elephant's ear, Xanthosoma sagittifolium, is a species. Inhabits tropical and subtropical moist broadleaf forests and mangrove forests and coastal wetlands spanning the Indomalayan and Neotropic realms.

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.