Beech Tarcrust vs common grey sea slug

Biscogniauxia nummularia compared with Aeolidia papillosa

Key Differences

Beech Tarcrust is Data Deficient while common grey sea slug is Least Concern.

Taxonomic Classification

Rank	Beech Tarcrust	common grey sea slug
Kingdom	Fungi (Fungi)	Animalia (hewan)
Phylum	Ascomycota (Sac Fungi)	Mollusca (Moluska)
Class	Sordariomycetes (Sordariomycetes)	Gastropoda (siput)
Order	Xylariales (Xylariales)	Nudibranchia (Nudibranchia)
Family	Graphostromataceae	Aeolidiidae
Genus	Biscogniauxia	Aeolidia
Species	Biscogniauxia nummularia	Aeolidia papillosa

Conservation Status

Beech Tarcrust

DD — Data Deficient

common grey sea slug

LC — Least Concern

Physical Characteristics

Attribute	Beech Tarcrust	common grey sea slug
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).

common grey sea slug

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium, Chile, Denmark, Norway, and Sweden.

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.

common grey sea slug

<em>Aeolidia papillosa</em>, commonly known as the common grey sea slug, is a nudibranch mollusc belonging to the genus Aeolidia within the family Aeolidiidae. Despite the species name referencing terrestrial and aquatic habitats including forests and freshwater, <em>Aeolidia papillosa</em> is primarily a marine organism. Its range includes Belgium, Chile, Denmark, Norway, and Sweden, indicating a distribution across the North Atlantic and into South American waters. Common grey sea slug is assessed as Least Concern on the IUCN Red List. The species is typically found in intertidal and subtidal zones, where it preys on sea anemones and stores stinging cells from its prey in its dorsal cerata for defense. Biological traits of this species remain poorly documented in the scientific literature.