Bilberry Roller vs Rootless Duckweed

Ancylis myrtillana compared with Wolffia arrhiza

Key Differences

Bilberry Roller is Least Concern while Rootless Duckweed is Endangered.

Taxonomic Classification

Rank	Bilberry Roller	Rootless Duckweed
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Liliopsida (Monocots)
Order	Lepidoptera (Butterflies & Moths)	Alismatales (Alismatales)
Family	Tortricidae	Araceae
Genus	Ancylis	Wolffia
Species	Ancylis myrtillana	Wolffia arrhiza

Conservation Status

Bilberry Roller

LC — Least Concern

Rootless Duckweed

EN — Endangered

Physical Characteristics

Attribute	Bilberry Roller	Rootless Duckweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bilberry Roller

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Rootless Duckweed

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate coniferous forests, among 4 distinct biome types spanning the Indomalayan and Oceanian and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Japan), Europe (10 countries), North America (Canada), and South America (Brazil). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Bilberry Roller

The Bilberry Roller (Ancylis myrtillana) is a species in the genus Ancylis. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.