koala vs Oak aphid

Phascolarctos cinereus compared with Myzocallis castanicola

Key Differences

• koala is Vulnerable while Oak aphid is Not Evaluated.

Taxonomic Classification

Rank	koala	Oak aphid
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Diprotodontia (Marsupials)	Hemiptera (Hemiptera)
Family	Phascolarctidae (Koalas)	Aphididae
Genus	Phascolarctos (Koalas)	Myzocallis
Species	Phascolarctos cinereus	Myzocallis castanicola

Evolutionary Relationship

koala and Oak aphid share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Oak aphid

NE — Not Evaluated

Physical Characteristics

Attribute	koala	Oak aphid
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.

Oak aphid

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States.

koala

Iconic marsupial of eastern and southeastern Australia, koalas weigh up to 15 kg and spend up to 22 hours daily sleeping to conserve energy from their low-calorie eucalyptus leaf diet. Highly specialized to process toxic eucalyptus compounds that would kill most other mammals, they have gut microbiomes uniquely adapted for detoxification. Listed as Endangered in 2022, with populations decimated by chlamydia disease, habitat clearing, and climate change.