Wireworm

Definition

The elongate, cylindrical, sclerotized larva of a click beetle (family Elateridae), characterized by a hard, shiny cuticle and a reduced, retracted head capsule. Wireworms live in soil or decaying wood for multiple years, feeding on roots, seeds, and tubers, and are economically significant pests of cereal crops, potatoes, and other root vegetables.

Etymology

From the slender, wire-like appearance of the larva's tough, glossy integument.

Example

Larvae of the genus Ctenicera, such as the Pacific Coast wireworm (Ctenicera pruinina), can persist in agricultural soils for 2–6 years, causing irregular stand establishment in wheat fields by boring into germinating seeds and hollowed-out stems.

Synonyms

• elaterid larva
• click beetle larva

Related Terms

• click beetle
• Elateridae
• scarabaeiform
• root-feeding
• soil-dwelling
• agricultural pest
• larval instar

Usage Notes

Not all soil-dwelling, wire-like larvae are true wireworms; the term specifically applies to Elateridae. Some other beetle families (e.g., Tenebrionidae, Cerambycidae) produce superficially similar larvae that may be colloquially called wireworms but are distinct in head capsule structure and mandible orientation. Wireworms are often distinguished from white grubs (Scarabaeidae larvae) by their more slender, harder, and less C-shaped bodies.