Endomychidae

Definition

A family of coccinelloid beetles (order Coleoptera, superfamily Cucujoidea), commonly called handsome fungus beetles, distributed across all biogeographic realms. Adults and larvae feed primarily on fungal fruiting bodies and spores, occupying a specialized mycophagous niche in forest and woodland ecosystems. The family comprises approximately 1,300 described species in twelve extant subfamilies including Endomychinae, Lycoperdininae, and Leiestinae.

Etymology

From the type genus Endomychus (Greek endon 'within' + mykēs 'fungus') + family suffix -idae.

Example

Members of Endomychidae such as Endomychus coccineus are frequently collected by mycophagous beetle specialists using Lindgren funnel traps baited with fungal cultures, and their presence indicates mature woodland with abundant decaying wood and fungal sporocarps.

Synonyms

• Handsome fungus beetles

Related Terms

• Coleoptera
• Cucujoidea
• Coccinelloidea
• mycophagy
• saproxylic
• fungivore
• Lycoperdininae

Usage Notes

The common name 'handsome fungus beetles' refers to the often bright coloration and rounded, convex body form shared with lady beetles (Coccinellidae), though Endomychidae are distinguished by their more elongate antennae with loose, elongate clubs and their obligate fungal diet. Formerly treated as a subfamily of Coccinellidae; molecular and larval studies support family rank within Cucujoidea. Specimens are frequently misidentified as small Coccinellidae or Latridiidae in general beetle collections.