Red flour beetle vs small tortoiseshell

Tribolium castaneum compared with Aglais urticae

Key Differences

Red flour beetle is Least Concern while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Red flour beetle	small tortoiseshell
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	Tenebrionidae	Nymphalidae (Brush-footed Butterflies)
Genus	Tribolium	Aglais
Species	Tribolium castaneum	Aglais urticae

Evolutionary Relationship

Red flour beetle and small tortoiseshell share a common ancestor at the Class level: Insecta. (Insects)

View Class: Insecta

Conservation Status

Red flour beetle

LC — Least Concern

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Red flour beetle	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Red flour beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Widely distributed across Asia (Japan, Taiwan), Europe (25 countries), North America (Canada, Mexico, United States), and South America (Colombia, Venezuela).

small tortoiseshell

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (41 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

small tortoiseshell (Aglais urticae) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.