Clover Seed Weevil vs Oso Polar

Protapion assimile compared with Ursus maritimus

Key Differences

• Clover Seed Weevil is Least Concern while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	Clover Seed Weevil	Oso Polar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (artrópodos)	Chordata (cordados)
Class	Insecta (insecto)	Mammalia (mamíferos)
Order	Coleoptera (coleópteros)	Carnivora (carnívoros)
Family	Apionidae	Ursidae (Bears)
Genus	Protapion	Ursus (Bears)
Species	Protapion assimile	Ursus maritimus

Evolutionary Relationship

Clover Seed Weevil and Oso Polar share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Clover Seed Weevil

LC — Least Concern

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Clover Seed Weevil	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Clover Seed Weevil

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Norway and Sweden.

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.

Clover Seed Weevil

Protapion assimile is a small apionid weevil in the family Brentidae, subfamily Apioninae, order Coleoptera, known by the shared common name clover seed weevil alongside its congener P. apricans and the unrelated Tychius picirostris. P. assimile is distinguished from P. apricans principally by its host plant preference: while P. apricans predominantly infests red clover (Trifolium pratense), P. assimile shows preference for white clover (Trifolium repens) and alsike clover (Trifolium hybridum), an ecological distinction that reduces direct interspecific competition between these closely related species. Females lay eggs in developing flower heads and seed pods of their respective host plants, and larvae consume developing seeds within the flower head. Adults feed on clover foliage and stems. P. assimile is distributed across Europe and is recorded from Norway and Sweden, inhabiting meadows, pastures, roadsides, and agricultural grasslands where white and alsike clover are present. The species is classified as Least Concern on the IUCN Red List, with populations considered stable across its range. P. assimile can be separated from P. apricans by differences in elytral striation depth, rostrum proportions, and tibial structure, though the two species are frequently confused in field identification due to their similar size and coloration. Both species can cause localized damage to clover seed crops but rarely reach pest status in mixed-clover agricultural systems.

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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway