Black Kauri vs common door snail

Agathis atropurpurea compared with Clausilia bidentata

Key Differences

• Black Kauri is Near Threatened while common door snail is Least Concern.

Taxonomic Classification

Rank	Black Kauri	common door snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Mollusca (Mollusks)
Class	Insecta (Insects)	Gastropoda (Gastropoda)
Order	Hymenoptera (Ants, Bees & Wasps)	Stylommatophora (Stylommatophora)
Family	Braconidae	Clausiliidae
Genus	Agathis	Clausilia
Species	Agathis atropurpurea	Clausilia bidentata

Evolutionary Relationship

Black Kauri and common door snail share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Black Kauri

NT — Near Threatened

common door snail

LC — Least Concern

Physical Characteristics

Attribute	Black Kauri	common door snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Kauri

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

common door snail

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Black Kauri

The Black Kauri (Agathis atropurpurea) is a species in the genus Agathis. It is currently classified as Near Threatened on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

common door snail

<em>Clausilia bidentata</em>, the common door snail, is a terrestrial gastropod mollusk in the family Clausiliidae. This species is distributed across Belgium, Denmark, Norway, and Sweden, where it typically inhabits moist terrestrial environments including deciduous woodlands, rocky slopes, hedgerows, and the margins of freshwater habitats. The common door snail is recognized by its elongated, sinistral (left-handed) shell, which is a distinctive trait of the family Clausiliidae. The shell is typically brown to gray and reaches approximately 12–15 millimeters in length. <em>Clausilia bidentata</em> generally feeds on algae, lichens, fungi, and decaying plant material by rasping food with a radula. It often shelters under bark, stones, and leaf litter during dry or cold conditions. Like many clausiliids, it possesses a complex internal shell structure called a clausilium that closes the shell aperture to reduce desiccation. The species is assessed as Least Concern, reflecting stable populations across its European range. Detailed biological traits beyond those noted here are not extensively documented in the current scientific literature.