clouded magpie vs Thread Weed

Abraxas sylvata compared with Ulva compressa

Key Differences

• clouded magpie is Vulnerable while Thread Weed is Least Concern.

Taxonomic Classification

Rank	clouded magpie	Thread Weed
Kingdom	Animalia (Animals)	Plantae (planta)
Phylum	Arthropoda (artrópodos)	Chlorophyta (Chlorophyta)
Class	Insecta (insecto)	Ulvophyceae (Ulvophyceae)
Order	Lepidoptera (Butterflies & Moths)	Ulvales (Ulvales)
Family	Geometridae	Ulvaceae
Genus	Abraxas	Ulva
Species	Abraxas sylvata	Ulva compressa

Conservation Status

clouded magpie

VU — Vulnerable

Thread Weed

LC — Least Concern

Physical Characteristics

Attribute	clouded magpie	Thread Weed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

clouded magpie

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.

Thread Weed

Habitat

Native to Asia and Europe and Oceania, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), Oceania and the Pacific (New Zealand), and South America (Brazil).

clouded magpie

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 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden