Alien field ant vs Brown Rat

Lasius alienus compared with Rattus norvegicus

Key Differences

• Alien field ant is Data Deficient while Brown Rat is Least Concern.

Taxonomic Classification

Rank	Alien field ant	Brown Rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Hymenoptera (Ants, Bees & Wasps)	Rodentia (Rodents)
Family	Formicidae	Muridae (Mice & Rats)
Genus	Lasius	Rattus
Species	Lasius alienus	Rattus norvegicus

Evolutionary Relationship

Alien field ant and Brown Rat share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Alien field ant

DD — Data Deficient

Brown Rat

LC — Least Concern

Physical Characteristics

Attribute	Alien field ant	Brown Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alien field ant

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (6 countries) and North America (United States).

Brown Rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (11 countries), Asia (15 countries), Europe (41 countries), North America (16 countries), Oceania and the Pacific (10 countries), and South America (10 countries).

Alien field ant

The Alien field ant (Lasius alienus) is a species in the genus Lasius. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment. Typically found in virtually all terrestrial and freshwater habitats.

Brown Rat

Brown Rat (Rattus norvegicus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 7 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇮🇪 Ireland 🇱🇺 Luxembourg 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States