Black Sexton Beetle vs Coastal Flat-body

Nicrophorus humator compared with Agonopterix yeatiana

Key Differences

• Black Sexton Beetle is Least Concern while Coastal Flat-body is Near Threatened.

Taxonomic Classification

Rank	Black Sexton Beetle	Coastal Flat-body
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class same	Insecta (Insects)	Insecta (Insects)
Order	Coleoptera (Beetles)	Lepidoptera (Butterflies & Moths)
Family	Staphylinidae	Depressariidae
Genus	Nicrophorus	Agonopterix
Species	Nicrophorus humator	Agonopterix yeatiana

Evolutionary Relationship

Black Sexton Beetle and Coastal Flat-body share a common ancestor at the Class level: Insecta. (Insects)

Conservation Status

Black Sexton Beetle

LC — Least Concern

Coastal Flat-body

NT — Near Threatened

Physical Characteristics

Attribute	Black Sexton Beetle	Coastal Flat-body
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Sexton Beetle

Habitat

Inhabits deserts and xeric shrublands within the Palearctic biogeographic realm.

Range

Found across Asia (Kyrgyzstan, Tajikistan) and Europe (4 countries).

Coastal Flat-body

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Black Sexton Beetle

The Black Sexton Beetle (Nicrophorus humator) is a species in the genus Nicrophorus. It is currently classified as Least Concern on the IUCN Red List. Inhabits deserts and xeric shrublands within the Palearctic biogeographic realm.

Coastal Flat-body

Agonopterix yeatiana, the coastal flat-body, is a small moth in the family Depressariidae native to coastal and calcareous grassland habitats across western and northern Europe, with records from Belgium, Denmark, and Sweden. Moths in the family Depressariidae, commonly called flat-body moths due to the depressed posture they adopt when resting with wings held flat against the surface, are associated predominantly with umbellifer plants of the family Apiaceae as larval hosts. Agonopterix yeatiana larvae feed on wild carrot (Daucus carota), wild parsnip (Pastinaca sativa), and related coastal and grassland Apiaceae species, inhabiting the open, often calcareous or sandy habitats where these plants grow. Adult moths have greyish-brown forewing with a distinctive pattern of spots and dashes and reach approximately 8–12 millimeters in wingspan. The species is classified as Near Threatened by the IUCN, reflecting declines associated with the loss of traditional hay meadow management, coastal grassland degradation, and scrub encroachment that eliminates the open, flower-rich grassland habitats supporting its host plants. Agricultural intensification has reduced wild umbellifer populations significantly across lowland Europe, reducing food resources for larvae of specialist moths like A. yeatiana.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden