Alfalfa Butterfly vs Oso Polar

Colias eurytheme compared with Ursus maritimus

Key Differences

• Alfalfa Butterfly is Least Concern while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	Alfalfa Butterfly	Oso Polar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (artrópodos)	Chordata (cordados)
Class	Insecta (insecto)	Mammalia (mamíferos)
Order	Lepidoptera (Butterflies & Moths)	Carnivora (carnívoros)
Family	Pieridae	Ursidae (Bears)
Genus	Colias	Ursus (Bears)
Species	Colias eurytheme	Ursus maritimus

Evolutionary Relationship

Alfalfa Butterfly and Oso Polar share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Alfalfa Butterfly

LC — Least Concern

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Alfalfa Butterfly	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Alfalfa Butterfly

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Canada and United States.

Oso Polar

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Alfalfa Butterfly

The Alfalfa Butterfly (Colias eurytheme) is a species in the genus Colias. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Oso Polar

El mayor carnivoro terrestre de la Tierra, el oso polar puede superar los 700 kg y se encuentra en el hielo marino del Artico, desde Canada hasta Rusia. Es un mamifero marino altamente especializado que depende del hielo marino para cazar focas anilladas y barbadas. Excelente nadador capaz de cubrir grandes distancias en agua abierta. Clasificado como Vulnerable, sus poblaciones soportan una presion severa por la rapida perdida de hielo marino artico debida al cambio climatico.