Großer Speerspanner vs Laysanstockente

Rheumaptera hastata compared with Anas laysanensis

Key Differences

• Großer Speerspanner is Least Concern while Laysanstockente is Critically Endangered.

Taxonomic Classification

Rank	Großer Speerspanner	Laysanstockente
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum	Arthropoda (Gliederfüßer)	Chordata (Chordatiere)
Class	Insecta (Insekten)	Aves (Vögel)
Order	Lepidoptera (Schmetterlinge)	Anseriformes (Gänsevögel)
Family	Geometridae	Anatidae
Genus	Rheumaptera	Anas
Species	Rheumaptera hastata	Anas laysanensis

Evolutionary Relationship

Großer Speerspanner and Laysanstockente share a common ancestor at the Kingdom level: Animalia. (Tier)

Conservation Status

Großer Speerspanner

LC — Least Concern

Laysanstockente

CR — Critically Endangered

Physical Characteristics

Attribute	Großer Speerspanner	Laysanstockente
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Großer Speerspanner

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

Laysanstockente

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, France, Netherlands, Norway, and United Kingdom. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Großer Speerspanner

The Argent & Sable, Rheumaptera hastata, is a species. It is currently assessed as least concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Laysanstockente

Laysan Duck (Anas laysanensis) is classified as Critically Endangered (CR) on the IUCN Red List. Facing an extremely high risk of extinction in the wild due to severe population decline and habitat loss.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇳🇴 Norway