Ulmen-Fleckenspanner vs Nördlicher Schwindling

Abraxas sylvata compared with Marasmius siccus

Key Differences

Ulmen-Fleckenspanner is Vulnerable while Nördlicher Schwindling is Near Threatened.

Taxonomic Classification

Rank	Ulmen-Fleckenspanner	Nördlicher Schwindling
Kingdom	Animalia (Tier)	Fungi (Pilze)
Phylum	Arthropoda (Gliederfüßer)	Basidiomycota (Ständerpilze)
Class	Insecta (Insekten)	Agaricomycetes (Mushrooms)
Order	Lepidoptera (Schmetterlinge)	Agaricales (Champignonartige)
Family	Geometridae	Marasmiaceae
Genus	Abraxas	Marasmius
Species	Abraxas sylvata	Marasmius siccus

Conservation Status

Ulmen-Fleckenspanner

VU — Vulnerable

Nördlicher Schwindling

NT — Near Threatened

Physical Characteristics

Attribute	Ulmen-Fleckenspanner	Nördlicher Schwindling
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Nördlicher Schwindling

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

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

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.