Throscidae

Definition

A family of small elateroid beetles (order Coleoptera) comprising approximately 150 described species in five extant genera. Adults are short-lived and capable of the clicking mechanism characteristic of click beetles; males perform complex mating dances. Larvae are soil-dwelling and feed by siphoning fluids from mycorrhizal fungi associated with tree roots. The family has worldwide distribution.

Etymology

From Throscus (type genus) + -idae (family suffix); Throscus from Greek throskos, a type of small bird or thrush, possibly alluding to the beetles' small size or habitus.

Example

Larvae of Throscidae such as those in the genus Throscus develop in association with ectomycorrhizae on tree roots, making them difficult to rear in isolation from their fungal hosts.

Related Terms

• Elateroidea
• Elateridae
• click beetle
• mycorrhizae
• ectomycorrhizal
• soil fauna
• larval ecology

Usage Notes

Distinguished from the larger family Elateridae (true click beetles) by smaller size, reduced clicking mechanism, and specialized larval association with mycorrhizal fungi rather than free-living predation or saprophagy. The family is sometimes overlooked in soil food-web studies due to the cryptic habits of larvae.