Clay-Coloured Weevil vs Polar bear

Otiorhynchus singularis compared with Ursus maritimus

Key Differences

• Clay-Coloured Weevil is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Clay-Coloured Weevil	Polar bear
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Arthropoda (节肢动物门)	Chordata (脊索动物门)
Class	Insecta (昆蟲綱)	Mammalia (哺乳動物)
Order	Coleoptera (鞘翅目)	Carnivora (食肉目)
Family	Curculionidae	Ursidae (Bears)
Genus	Otiorhynchus	Ursus (Bears)
Species	Otiorhynchus singularis	Ursus maritimus

Evolutionary Relationship

Clay-Coloured Weevil and Polar bear share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

Clay-Coloured Weevil

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Clay-Coloured Weevil	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Clay-Coloured Weevil

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (32 countries) and North America (Canada, United States).

Polar bear

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.

Clay-Coloured Weevil

The Clay-coloured Weevil, Otiorhynchus singularis, is a small flightless beetle in the family Curculionidae native to Europe and widely established as an introduced pest in many parts of North America and other temperate regions. The adult weevil is typically 5–7 mm in length, mottled gray-brown or clay-colored with patches of pale scales that provide camouflage against bark and soil. Like other Otiorhynchus weevils, the Clay-coloured Weevil is parthenogenetic in most introduced populations, consisting entirely of females that reproduce without mating. Adults are nocturnal, feeding on the foliage and bark of a wide range of host plants including strawberries, raspberries, currants, ornamental shrubs, and nursery stock. The larvae develop in soil, feeding on roots and causing significant damage that can girdle and kill established plants. The species is considered a serious horticultural pest in affected regions, causing economic losses in soft fruit production, nurseries, and ornamental plantings. Management typically involves biological control using entomopathogenic nematodes or fungi, as chemical control of soil-dwelling larvae is difficult. The species is well established across temperate Europe and has been accidentally introduced to parts of North America through the horticultural trade.

Polar bear

北极熊是地球上最大的陆地食肉动物，体重可超过700千克，分布于从加拿大到俄罗斯的北极海冰区。是高度特化的海洋哺乳动物，依赖海冰捕猎环斑海豹和髯海豹。是优秀的游泳者，能够横渡广阔的开阔水域。被列为易危种，因气候变化导致北极海冰迅速减少，种群正受到严重威胁。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway