DIAMONDBACK MOTH, Plutella xylostella (Linnaeus)
Description Picture Damage
  • adults are grayish moths, about 1/3 inch long
  • males have the wings with a row of three diamond-shaped yellow spots where they meet down the middle of the back
  • folded wings flare outward and upward toward their tips
  • hind wings have a fringe of long hairs
  • larvae, which rarely exceed 1/3 inch, are pale yellowish-green with fine, scattered, erect black hairs over the body
  • they wiggle actively when disturbed
  • pupa is in a gauzy sack so thin and loosely spun that it hardly conceals the pupa about 3/8 inch long

  • Photo credit: Extension Entomology, Department of Entomology, Texas A&M University

  • larvae feed on the underside of leaves, leaving shothole type damage
  • usually, outer leaves are attacked