beaded chestnut vs Common Periwinkle

Agrochola lychnidis compared with Littorina littorea

Key Differences

• beaded chestnut is Near Threatened while Common Periwinkle is Least Concern.

Taxonomic Classification

Rank	beaded chestnut	Common Periwinkle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Mollusca (Mollusks)
Class	Insecta (Insects)	Gastropoda (Gastropoda)
Order	Lepidoptera (Butterflies & Moths)	Littorinimorpha (Littorinimorpha)
Family	Noctuidae	Littorinidae
Genus	Agrochola	Littorina
Species	Agrochola lychnidis	Littorina littorea

Evolutionary Relationship

beaded chestnut and Common Periwinkle share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

beaded chestnut

NT — Near Threatened

Common Periwinkle

LC — Least Concern

Physical Characteristics

Attribute	beaded chestnut	Common Periwinkle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

beaded chestnut

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Common Periwinkle

Habitat

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

Range

Found across Europe (4 countries) and North America (Canada, United States).

beaded chestnut

The Beaded chestnut (Agrochola lychnidis) is a species in the genus Agrochola. It is currently classified as Near Threatened on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Common Periwinkle

Common Periwinkle (Littorina littorea) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden