Bluejoint vs Common Sun Beetle

Calamagrostis canadensis compared with Amara aenea

Taxonomic Classification

Rank	Bluejoint	Common Sun Beetle
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Arthropoda (Arthropods)
Class	Liliopsida (Monocots)	Insecta (Insects)
Order	Poales (Grasses)	Coleoptera (Beetles)
Family	Poaceae (Grass Family)	Carabidae
Genus	Calamagrostis	Amara
Species	Calamagrostis canadensis	Amara aenea

Conservation Status

Bluejoint

LC — Least Concern

Common Sun Beetle

LC — Least Concern

Physical Characteristics

Attribute	Bluejoint	Common Sun Beetle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bluejoint

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Distributed across Norway and United States.

Common Sun Beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (7 countries) and North America (Canada, United States).

Bluejoint

The Bluejoint (Calamagrostis canadensis) is a species in the genus Calamagrostis. It is currently classified as Least Concern on the IUCN Red List. Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Common Sun Beetle

<em>Amara aenea</em>, the common sun beetle, is a carabid ground beetle in the family Carabidae, order Coleoptera. It is broadly distributed across Europe and has been introduced to North America, typically inhabiting open, sunny habitats such as arable fields, grasslands, sandy heathlands, and disturbed ground with sparse vegetation. Adults are omnivorous, feeding on seeds, small invertebrates, and plant material, and are considered important predators of weed seeds in agricultural systems. <em>Amara aenea</em> is surface-active during warm, dry conditions, typically exhibiting peak activity in late spring and summer. Like many carabid beetles, it is nocturnal and shelters under stones and debris during the day. Larvae develop in the soil, where they also feed on organic matter and small invertebrates. Biological traits including precise adult lifespan, body length measurements, and detailed prey preferences remain poorly documented at the species level. The species is assessed as Least Concern by the IUCN, reflecting its wide distribution, high adaptability to disturbed environments, and no significant known threats to global population status.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇺🇸 United States