barred rivulet vs small tortoiseshell

Perizoma bifaciata compared with Aglais urticae

Key Differences

barred rivulet is Vulnerable while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	barred rivulet	small tortoiseshell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class same	Insecta (Insects)	Insecta (Insects)
Order same	Lepidoptera (Butterflies & Moths)	Lepidoptera (Butterflies & Moths)
Family	Geometridae	Nymphalidae (Brush-footed Butterflies)
Genus	Perizoma	Aglais
Species	Perizoma bifaciata	Aglais urticae

Evolutionary Relationship

barred rivulet and small tortoiseshell share a common ancestor at the Order level: Lepidoptera. (Butterflies & Moths)

View Order: Lepidoptera

Conservation Status

barred rivulet

VU — Vulnerable

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	barred rivulet	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

barred rivulet

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

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.

barred rivulet

The Barred rivulet (Perizoma bifaciata) is a species in the genus Perizoma. It is currently classified as Vulnerable on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

small tortoiseshell

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.