Beech Tarcrust vs small tortoiseshell

Biscogniauxia nummularia compared with Aglais urticae

Key Differences

• Beech Tarcrust is Data Deficient while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Beech Tarcrust	small tortoiseshell
Kingdom	Fungi (เห็ดรา)	Animalia (สัตว์)
Phylum	Ascomycota (Sac Fungi)	Arthropoda (สัตว์ขาปล้อง)
Class	Sordariomycetes (Sordariomycetes)	Insecta (แมลง)
Order	Xylariales (Xylariales)	Lepidoptera (ผีเสื้อ)
Family	Graphostromataceae	Nymphalidae (Brush-footed Butterflies)
Genus	Biscogniauxia	Aglais
Species	Biscogniauxia nummularia	Aglais urticae

Conservation Status

Beech Tarcrust

DD — Data Deficient

small tortoiseshell

NT — Near Threatened

Physical Characteristics

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

Habitat & Geographic Range

Beech Tarcrust

Habitat

Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (7 countries), and South America (Brazil).

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.

Beech Tarcrust

The Beech Tarcrust (Biscogniauxia nummularia) is a species in the genus Biscogniauxia. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment. Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

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 7 countries:

🇦🇹 Austria 🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇮 Slovenia 🇸🇪 Sweden