Melandryidae

Definition

A family of elongate, somewhat flattened beetles (Coleoptera: Tenebrionoidea) whose larvae and adults inhabit decaying wood and feed on wood-decomposing fungi. The family comprises roughly 420 species in 60 genera distributed worldwide, though most diverse in temperate regions. Adults are typically dull brown to black, with filiform antennae and pronota that often overhang the head; larvae are cylindrical, lightly sclerotized, and found in soft punky wood or under bark.

Etymology

Example

In old-growth forest surveys, pitfall traps and bark-sifting often yield Melandryidae such as Orchesia minor, indicating well-rotted hardwood substrate.

Related Terms

• Tenebrionoidea
• Coleoptera
• saproxylic
• Fungivory
• rotting wood ecology
• Elateroidea

Usage Notes

Distinguished from similar darkling beetle relatives (Tenebrionidae, Tetratomidae) by the combination of elongate body form, pronotal shape, and obligate association with fungal-decayed wood rather than dry or herbaceous substrates. The family has undergone repeated taxonomic revision; some former subfamilies have been elevated to family rank, so older literature may use broader circumscriptions.