Thrips

Order/Family: Thysanura/Thripidae

Description:

  • They are various colors, typically black, brown, white or yellow.
  • They are minute insects less than 1/10-inch long.
  • They have piercing and sucking mouthparts.
  • Adults have narrow wings completely fringed with small hairs.

 

Biology and Habits:

  • They may overwinter in the soil as pre-emerged adults.
  • Some species are killed off in the winter and subsequent populations immigrate in from southern climates.
  • Adults and nymphs feed on plant juices and/or pollen.
  • There are several generations per year.

 

Plants Attacked:

  • Deciduous plants, trees, shrubs, and perennials.

Damage:

  • Leaf feeders cause stippling (spotting) of the upper leaf surface.
  • Blossom feeders cause white or brown spots and streaks to form on the flower.
  • Thrips rarely cause significant plant damage.