Enveloping Crust vs small tortoiseshell

Sebacina incrustans compared with Aglais urticae

Key Differences

• Enveloping Crust is Least Concern while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Enveloping Crust	small tortoiseshell
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Arthropoda (Arthropods)
Class	Agaricomycetes (Mushrooms)	Insecta (Insects)
Order	Sebacinales (Sebacinales)	Lepidoptera (Butterflies & Moths)
Family	Sebacinaceae	Nymphalidae (Brush-footed Butterflies)
Genus	Sebacina	Aglais
Species	Sebacina incrustans	Aglais urticae

Conservation Status

Enveloping Crust

LC — Least Concern

small tortoiseshell

NT — Near Threatened

Physical Characteristics

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

Habitat & Geographic Range

Enveloping Crust

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

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

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 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden