Common Flower Fly vs koala

Syrphus ribesii compared with Phascolarctos cinereus

Key Differences

• Common Flower Fly is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	Common Flower Fly	koala
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	Diptera (ハエ目)	Diprotodontia (カンガルー目)
Family	Syrphidae	Phascolarctidae (Koalas)
Genus	Syrphus	Phascolarctos (Koalas)
Species	Syrphus ribesii	Phascolarctos cinereus

Evolutionary Relationship

Common Flower Fly and koala share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Common Flower Fly

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Common Flower Fly	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Common Flower Fly

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (5 countries) and North America (United States).

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.

Common Flower Fly

<em>Syrphus ribesii</em> is a hoverfly in the family Syrphidae, order Diptera, commonly known as the common flower fly. This species is among the most frequently encountered hoverflies in its range and serves an important ecological role as a pollinator of flowering plants. The species is classified as Least Concern on the IUCN Red List. <em>Syrphus ribesii</em> is distributed across Europe and the United States, typically inhabiting gardens, hedgerows, woodland edges, and meadows where flowering plants are abundant. Adults are characterized by yellow and black banded abdomens that mimic the appearance of wasps or bees, providing protection from predators through Batesian mimicry. Adults feed on nectar and pollen, while larvae are predatory, feeding on soft-bodied insects such as aphids and thereby providing a natural pest control service in gardens and agricultural settings. The species is migratory in parts of its range. Biological traits of this species remain poorly documented in the scientific literature.

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。