Thrips

There are a few different thrip species which can damage salad crops, all to varying degrees:

Western flower thrips
Onion thrips
Field thrips

Resources covering all species are linked below.

Thrips Resource List

AHDB resources

Identification and management of bugs and thrips in field crops Pests infecting lettuce crops

CABI resource

Thrips angusticeps (field thrips) | Access Required Thrips tabaci (onion thrips) | Access Required Understanding and managing thrips: A complete guide Frankliniella occidentalis (western flower thrips) | Access Required

University resources

EDIS: Western Flower Thrips USU: Onion Thrips Warwick: Onion thrips UC: Thrips management guidelines

Other resource

RHS: Thrips Koppert: Thrips - Biocontrol, Damage and Life Cycle Bayer: Thrips Bayer: Vegetable Guide: Thrips