Bearded Stonewort vs Common Sun Beetle

Chara canescens compared with Amara aenea

Key Differences

Bearded Stonewort is Vulnerable while Common Sun Beetle is Least Concern.

Taxonomic Classification

Rank	Bearded Stonewort	Common Sun Beetle
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Charophyta (Charophyta)	Arthropoda (Arthropods)
Class	Charophyceae (Charophyceae)	Insecta (Insects)
Order	Charales (Charales)	Coleoptera (Beetles)
Family	Characeae	Carabidae
Genus	Chara	Amara
Species	Chara canescens	Amara aenea

Conservation Status

Bearded Stonewort

VU — Vulnerable

Common Sun Beetle

LC — Least Concern

Physical Characteristics

Attribute	Bearded Stonewort	Common Sun Beetle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bearded Stonewort

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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).

Bearded Stonewort

The Bearded Stonewort (Chara canescens) is a species in the genus Chara. It is currently classified as Vulnerable on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

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.