Billion-Dollar Grass vs Common Sun Beetle

Echinochloa frumentacea compared with Amara aenea

Key Differences

Billion-Dollar Grass is Not Evaluated while Common Sun Beetle is Least Concern.

Taxonomic Classification

Rank	Billion-Dollar Grass	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	Echinochloa	Amara
Species	Echinochloa frumentacea	Amara aenea

Conservation Status

Billion-Dollar Grass

NE — Not Evaluated

Common Sun Beetle

LC — Least Concern

Physical Characteristics

Attribute	Billion-Dollar Grass	Common Sun Beetle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Billion-Dollar Grass

Habitat

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

Range

Widely distributed across Africa (Namibia, Zimbabwe), Asia (Pakistan, Taiwan), Europe (13 countries), North America (Canada, United States), Oceania and the Pacific (Australia), and South America (Brazil).

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).

Billion-Dollar Grass

The Billion-Dollar Grass (Echinochloa frumentacea) is a species in the genus Echinochloa. 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.