Sweetpotato flea beetle

Definition

A small, jumping flea beetle (Chrysomelidae: Alticini) whose larvae tunnel in sweetpotato roots and tubers, causing characteristic serpentine mines and surface blemishes that reduce marketability. Adults feed on foliage, producing small shot-hole damage. The species has spread globally through cultivation and trade, with established populations across tropical and subtropical regions.

Etymology

Common name from primary host (Ipomoea batatas, sweetpotato) and flea-like jumping habit of adults; scientific name Chaetocnema confinis from Greek chaite (hair, bristle) and knema (leg), referring to setose hind femora characteristic of the genus.

Example

In the southeastern United States, Chaetocnema confinis is managed through crop rotation, resistant cultivars, and soil-applied insecticides timed to protect young roots from larval mining.

Synonyms

• Chaetocnema confinis

Related Terms

• flea beetle
• Chrysomelidae
• root feeding
• shot-hole damage
• crop pest
• Ipomoea

Usage Notes

The common name is conventionally spelled as one word (sweetpotato) when referring to the crop, distinguishing it from the sweet potato flea beetle (a regional name sometimes applied to other Chaetocnema species). Not to be confused with the sweetpotato weevil (Cylas spp., Brentidae), a unrelated coleopteran pest with similar host range but distinct biology and much greater quarantine significance.