koala vs large tortoiseshell

Phascolarctos cinereus compared with Nymphalis polychloros

Key Differences

  • koala is Vulnerable while large tortoiseshell is Critically Endangered.

Taxonomic Classification

Rank koala large tortoiseshell
Kingdom same Animalia (動物) Animalia (動物)
Phylum Chordata (脊索動物) Arthropoda (節足動物)
Class Mammalia (哺乳類) Insecta (昆虫)
Order Diprotodontia (カンガルー目) Lepidoptera (チョウ目)
Family Phascolarctidae (Koalas) Nymphalidae (Brush-footed Butterflies)
Genus Phascolarctos (Koalas) Nymphalis
Species Phascolarctos cinereus Nymphalis polychloros

Evolutionary Relationship

koala and large tortoiseshell share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

large tortoiseshell

CR — Critically Endangered

Physical Characteristics

Attribute koala large tortoiseshell
Diet Herbivore
Average Lifespan 15 years
Average Length 75 cm
Average Weight 10.0 kg

Habitat & Geographic Range

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

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

large tortoiseshell

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 9 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (39 countries). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

koala

オーストラリア東部・南東部を代表する有袋類で、体重は最大15kgに達し、低カロリーのユーカリの葉食から得るエネルギーを節約するために1日最大22時間を睡眠に費やす。他の哺乳類の多くを死に至らしめる有毒なユーカリ成分を処理するために高度に特化しており、解毒に特別に適応した腸内微生物叢を持つ。クラミジア感染症、生息地の伐採、気候変動により個体数が激減し、2022年に絶滅危惧種に指定された。

large tortoiseshell

オオキタテハ(Nymphalis polychloros)はIUCNレッドリストで絶滅危惧IA類(CR)に分類されている。深刻な個体数の減少と生息地の喪失により、野生での絶滅リスクが極めて高い状況にある。

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