Blacktail spurdog vs small tortoiseshell

Squalus melanurus compared with Aglais urticae

Key Differences

• Blacktail spurdog is Data Deficient while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Blacktail spurdog	small tortoiseshell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Elasmobranchii	Insecta (Insects)
Order	Squaliformes (Squaliformes)	Lepidoptera (Butterflies & Moths)
Family	Squalidae	Nymphalidae (Brush-footed Butterflies)
Genus	Squalus	Aglais
Species	Squalus melanurus	Aglais urticae

Evolutionary Relationship

Blacktail spurdog and small tortoiseshell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Blacktail spurdog

DD — Data Deficient

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Blacktail spurdog	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blacktail spurdog

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.

Blacktail spurdog

The Blacktail spurdog (Squalus melanurus) is a species in the genus Squalus. It is currently classified as Data Deficient on the IUCN Red List.

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.