Common Tiger Blue vs Polar bear

Tarucus theophrastus compared with Ursus maritimus

Key Differences

• Common Tiger Blue is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Common Tiger Blue	Polar bear
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Arthropoda (節足動物)	Chordata (脊索動物)
Class	Insecta (昆虫)	Mammalia (哺乳類)
Order	Lepidoptera (チョウ目)	Carnivora (ネコ目)
Family	Lycaenidae	Ursidae (Bears)
Genus	Tarucus	Ursus (Bears)
Species	Tarucus theophrastus	Ursus maritimus

Evolutionary Relationship

Common Tiger Blue and Polar bear share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Common Tiger Blue

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Common Tiger Blue	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Common Tiger Blue

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Malta and Spain.

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.

Common Tiger Blue

<em>Tarucus theophrastus</em>, commonly known as the common tiger blue, is a small butterfly belonging to the family Lycaenidae within the order Lepidoptera. This species is distributed across parts of North Africa, the Middle East, and the Indian subcontinent, including countries such as Morocco, Egypt, Saudi Arabia, and India. It typically inhabits dry scrubland, arid grasslands, and open woodland edges where its larval host plants are available. The wings display a characteristic blue-purple sheen on the upperside in males, while females exhibit more subdued coloration with broader dark margins. The underside features a distinctive pattern of white streaks and spots on a pale gray background, which gives the species its common name. <em>Tarucus theophrastus</em> is closely associated with plants in the genus Ziziphus, including jujube and Christ's thorn, which serve as primary larval food sources. Adults are typically active during warm months and can produce multiple broods per year in suitable climates. The species is currently assessed as Least Concern by the IUCN, with populations appearing stable across much of its range. Biological traits such as average lifespan, body length, and weight remain poorly documented in the scientific literature.

Polar bear

地球上で最大の陸上肉食動物であるホッキョクグマは700kgを超えることがあり、カナダからロシアまでの北極海氷域全体に分布する。ワモンアザラシとヒゲアザラシを狩るために海氷に依存する高度に特化した海洋哺乳類である。広大な距離を泳ぐことができる優れた泳者でもある。脆弱種に指定されており、気候変動による急激な北極海氷の消失で個体群が深刻な圧力を受けている。