Scarce Oak Knot-horn vs Warted Knot-Horn

Acrobasis tumidana compared with Acrobasis repandana

Key Differences

• Scarce Oak Knot-horn is Near Threatened while Warted Knot-Horn is Least Concern.

Taxonomic Classification

Rank	Scarce Oak Knot-horn	Warted Knot-Horn
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Arthropoda (arthropodes)	Arthropoda (arthropodes)
Class same	Insecta (insecte)	Insecta (insecte)
Order same	Lepidoptera (Butterflies & Moths)	Lepidoptera (Butterflies & Moths)
Family same	Pyralidae	Pyralidae
Genus same	Acrobasis	Acrobasis
Species	Acrobasis tumidana	Acrobasis repandana

Evolutionary Relationship

Scarce Oak Knot-horn and Warted Knot-Horn share a common ancestor at the Genus level: Acrobasis.

Conservation Status

Scarce Oak Knot-horn

NT — Near Threatened

Warted Knot-Horn

LC — Least Concern

Physical Characteristics

Attribute	Scarce Oak Knot-horn	Warted Knot-Horn
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Scarce Oak Knot-horn

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.

Warted Knot-Horn

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Sweden, and United States.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden