brown disc snail vs Common Yellow Conch

Discus ruderatus compared with Agapeta hamana

Taxonomic Classification

Rank	brown disc snail	Common Yellow Conch
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Gastropoda (Gastropoda)	Insecta (Insects)
Order	Stylommatophora (Stylommatophora)	Lepidoptera (Butterflies & Moths)
Family	Discidae	Tortricidae
Genus	Discus	Agapeta
Species	Discus ruderatus	Agapeta hamana

Evolutionary Relationship

brown disc snail and Common Yellow Conch share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

brown disc snail

LC — Least Concern

Common Yellow Conch

LC — Least Concern

Physical Characteristics

Attribute	brown disc snail	Common Yellow Conch
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

brown disc snail

Habitat

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

Range

Distributed across France, Italy, Norway, and Sweden.

Common Yellow Conch

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

brown disc snail

The Brown Disc Snail (Discus ruderatus) is a species in the genus Discus. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

Common Yellow Conch

<em>Agapeta hamana</em>, the common yellow conch moth, is a small moth in the family Tortricidae. It is widely distributed across Europe and central Asia, ranging from Britain and Scandinavia eastward through much of the Palearctic region. The species inhabits dry grasslands, heathlands, chalk downlands, and scrubby habitats where its larval host plants are found. Adult moths display distinctive pale yellow to golden-yellow forewings with irregular brown or reddish-brown markings near the wingtip, forming a pattern that resembles the shell of a conch, lending the species its common name. The wingspan typically measures around 15–22 mm. Biological traits such as average adult lifespan, precise body weight, and detailed population data remain poorly documented in consolidated scientific literature. Larvae feed internally on the roots of thistles and knapweeds, particularly <em>Centaurea</em> and <em>Cirsium</em> species. Adults fly from June to August and are frequently attracted to light. <em>Agapeta hamana</em> has been investigated as a potential biological control agent for invasive knapweed species in North America, where it has been introduced experimentally. The species is assessed as Least Concern given its broad distribution and stable habitat associations.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden