Chestnut Coloured Click Beetle vs Clustered Mushroom

Anostirus castaneus compared with Agaricus cappellianus

Key Differences

• Chestnut Coloured Click Beetle is Least Concern while Clustered Mushroom is Not Evaluated.

Taxonomic Classification

Rank	Chestnut Coloured Click Beetle	Clustered Mushroom
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Arthropoda (Arthropods)	Basidiomycota (Club Fungi)
Class	Insecta (Insects)	Agaricomycetes (Mushrooms)
Order	Coleoptera (Beetles)	Agaricales (Gilled Mushrooms)
Family	Elateridae	Agaricaceae (Agarics)
Genus	Anostirus	Agaricus (Button Mushrooms)
Species	Anostirus castaneus	Agaricus cappellianus

Conservation Status

Chestnut Coloured Click Beetle

LC — Least Concern

Clustered Mushroom

NE — Not Evaluated

Physical Characteristics

Attribute	Chestnut Coloured Click Beetle	Clustered Mushroom
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chestnut Coloured Click Beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

Clustered Mushroom

Habitat

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

Chestnut Coloured Click Beetle

The Chestnut Coloured Click Beetle (Anostirus castaneus) is a species in the genus Anostirus. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Clustered Mushroom

Agaricus cappellianus is a saprotrophic agaric fungus in the family Agaricaceae, the family containing the cultivated button mushroom (A. bisporus). Like other members of the genus Agaricus, A. cappellianus produces a cap with free gills that start out white or pink and darken to brown or blackish-brown as the spores mature. The stipe bears an annulus (ring) and is separate from the cap at maturity. A. cappellianus is known primarily from Europe, where it grows in grassy habitats, woodland edges, and gardens. The genus Agaricus is large, with hundreds of species globally, and field identification can be challenging. Important identification characters include cap color and texture, flesh-bruising reactions (yellowing or reddening), smell (anise-like vs. phenolic), spore color and size, and stipe characteristics. Some Agaricus species are edible and prized, while others contain phenolic compounds that cause gastrointestinal upset. Formal IUCN conservation status has not been assessed for A. cappellianus. The species has not been widely studied, and limited information is available on its ecology, host range, and distribution.