Cave ground-beetle vs Red-billed Duck

Trechus isabelae compared with Anas erythrorhyncha

Key Differences

• Cave ground-beetle is Vulnerable while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Cave ground-beetle	Red-billed Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Aves (Birds)
Order	Coleoptera (Beetles)	Anseriformes (Anseriformes)
Family	Carabidae	Anatidae
Genus	Trechus	Anas
Species	Trechus isabelae	Anas erythrorhyncha

Evolutionary Relationship

Cave ground-beetle and Red-billed Duck share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Cave ground-beetle

VU — Vulnerable

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Cave ground-beetle	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cave ground-beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found in Portugal. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Red-billed Duck

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found across Europe (6 countries) and South America (Ecuador).

Cave ground-beetle

The Cave ground-beetle (Trechus isabelae) is a species in the genus Trechus. It is currently classified as Vulnerable on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Red-billed Duck

Red-billed Duck (Anas erythrorhyncha) 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.