vs small tortoiseshell

Nitzschia bacillum compared with Aglais urticae

Key Differences

• is Not Evaluated while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank		small tortoiseshell
Kingdom	Chromista (Chromista)	Animalia (Animals)
Phylum	Ochrophyta (Ochrophyta)	Arthropoda (Arthropods)
Class	Bacillariophyceae (Bacillariophyceae)	Insecta (Insects)
Order	Bacillariales (Bacillariales)	Lepidoptera (Butterflies & Moths)
Family	Bacillariaceae	Nymphalidae (Brush-footed Butterflies)
Genus	Nitzschia	Aglais
Species	Nitzschia bacillum	Aglais urticae

Conservation Status

NE — Not Evaluated

small tortoiseshell

NT — Near Threatened

Physical Characteristics

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

Habitat & Geographic Range

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Portugal, and Sweden.

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.

Nitzschia bacillum is a small, rod-shaped pennate diatom with a cylindrical outline and a keel-positioned raphe. It inhabits benthic substrates in rivers, streams, and lakes across temperate and subtropical regions worldwide. This photosynthetic diatom forms part of the attached microalgal biofilm community in diverse freshwater environments.

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.

Shared Countries

Both species can be found in 3 countries:

🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden