English grain aphid vs koala

Sitobion avenae compared with Phascolarctos cinereus

Key Differences

• English grain aphid is Not Evaluated while koala is Vulnerable.

Taxonomic Classification

Rank	English grain aphid	koala
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Arthropoda (สัตว์ขาปล้อง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Insecta (แมลง)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Hemiptera (มวน)	Diprotodontia (Marsupials)
Family	Aphididae	Phascolarctidae (Koalas)
Genus	Sitobion	Phascolarctos (Koalas)
Species	Sitobion avenae	Phascolarctos cinereus

Evolutionary Relationship

English grain aphid and koala share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

English grain aphid

NE — Not Evaluated

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	English grain aphid	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

English grain aphid

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

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.