Cave ground-beetle vs Common dung beetle

Trechus isabelae compared with Aphodius pedellus

Key Differences

• Cave ground-beetle is Vulnerable while Common dung beetle is Least Concern.

Taxonomic Classification

Rank	Cave ground-beetle	Common dung beetle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class same	Insecta (Insects)	Insecta (Insects)
Order same	Coleoptera (Beetles)	Coleoptera (Beetles)
Family	Carabidae	Scarabaeidae
Genus	Trechus	Aphodius
Species	Trechus isabelae	Aphodius pedellus

Evolutionary Relationship

Cave ground-beetle and Common dung beetle share a common ancestor at the Order level: Coleoptera. (Beetles)

Conservation Status

Cave ground-beetle

VU — Vulnerable

Common dung beetle

LC — Least Concern

Physical Characteristics

Attribute	Cave ground-beetle	Common dung beetle
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.

Common dung beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Norway, Sweden, Switzerland, and United States.

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.

Common dung beetle

<em>Aphodius pedellus</em>, a species of dung beetle in the family Scarabaeidae, is classified as Least Concern by the IUCN Red List, indicating a stable conservation outlook across its known range. The species has been documented in Denmark, Norway, Sweden, Switzerland, and the United States, with its distribution spanning virtually all terrestrial and freshwater biome types. As a member of the Aphodiini tribe, <em>Aphodius pedellus</em> typically inhabits pastures, meadows, and woodland edges where mammalian dung is available, as dung beetles in this genus rely on feces as both a breeding medium and a food resource. These beetles play a critical role in nutrient cycling and soil aeration, breaking down organic waste and accelerating the return of nutrients to the soil. Their burrowing activity beneath dung pats enhances soil structure and improves water infiltration. <em>Aphodius pedellus</em> is part of a guild of coprophagous insects that collectively support healthy agricultural and natural ecosystems across temperate Europe and North America. Biological traits of this species remain poorly documented in the scientific literature.