Tobacco thrips

Definition

A minute, slender thrips species (Frankliniella fusca, family Thripidae) that feeds on a broad range of host plants, with particular economic importance as a pest of tobacco, cotton, peanuts, and numerous vegetable crops. Adults are dark-bodied with fringed wings; larvae are pale and wingless. The species is a significant vector of plant viruses, notably Tomato spotted wilt virus (TSWV) and Impatiens necrotic spot virus (INSV), transmitting these pathogens during feeding.

Etymology

Common name derives from its historical association with tobacco cultivation; the specific epithet fusca (Latin, 'dark' or 'dusky') refers to the dark coloration of adults.

Example

In southeastern U.S. tobacco fields, early-season infestations of tobacco thrips can stunt seedling growth and, more critically, introduce Tomato spotted wilt virus, which may cause total crop loss if infection rates exceed 10 percent.

Synonyms

• Frankliniella fusca

Related Terms

• Thrips
• Frankliniella
• Thripidae
• Thysanoptera
• Tomato spotted wilt virus
• Vector
• Piercing-sucking mouthparts
• rasping-sucking mouthparts
• Integrated Pest Management
• economic entomology

Usage Notes

The common name 'tobacco thrips' is applied specifically to Frankliniella fusca in North American agricultural contexts, though regional usage may vary. Not to be confused with other Frankliniella species such as the western flower thrips (F. occidentalis), which shares similar virus-vector ecology but differs in host range and geographic distribution. The species exhibits polyphagy, and populations may build on winter weed reservoirs before migrating to cultivated crops in spring.