Erlenblattkäfer vs Ulmen-Fleckenspanner

Agelastica alni compared with Abraxas sylvata

Key Differences

• Erlenblattkäfer is Least Concern while Ulmen-Fleckenspanner is Vulnerable.

Taxonomic Classification

Rank	Erlenblattkäfer	Ulmen-Fleckenspanner
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Arthropoda (Gliederfüßer)	Arthropoda (Gliederfüßer)
Class same	Insecta (Insekten)	Insecta (Insekten)
Order	Coleoptera (Käfer)	Lepidoptera (Schmetterlinge)
Family	Chrysomelidae	Geometridae
Genus	Agelastica	Abraxas
Species	Agelastica alni	Abraxas sylvata

Evolutionary Relationship

Erlenblattkäfer and Ulmen-Fleckenspanner share a common ancestor at the Class level: Insecta. (Insekten)

Conservation Status

Erlenblattkäfer

LC — Least Concern

Ulmen-Fleckenspanner

VU — Vulnerable

Physical Characteristics

Attribute	Erlenblattkäfer	Ulmen-Fleckenspanner
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Erlenblattkäfer

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

Ulmen-Fleckenspanner

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Erlenblattkäfer

The Alder leaf beetle (Agelastica alni) is a species in the genus Agelastica. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Ulmen-Fleckenspanner

The clouded magpie (Abraxas sylvata) is a geometrid moth in the family Geometridae found across temperate Europe, extending eastward through Russia to Japan. The adult wingspan measures approximately 32–42 mm, with white wings bearing a distinctive pattern of yellow-orange and dark grey to black spots and patches arranged in rows across the forewing and hindwing, creating a striking patterned appearance resembling the magpie coloring of the related magpie moth Abraxas grossulariata, but with a more yellowish, muted tone and less black — hence 'clouded.' Adults fly in one generation from June to July, resting on leaf surfaces and attending woodland flowers for nectar. The larvae feed on wych elm (Ulmus glabra) and occasionally other Ulmus species in mature deciduous woodland and woodland edges. The clouded magpie has become less common in parts of its European range due to the widespread loss of mature elms from Dutch elm disease, which devastated European elm populations from the 1970s onward. Conservation of this species requires the protection of surviving mature elm trees and management of regrowth elms in woodland ecosystems.

Shared Countries

Both species can be found in 4 countries:

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