grape colaspis adult MER copy.jpg

Grape colaspis grub


  • Adult: Small brown beetle with yellowish lines running down the length of its wing covers.
  • Larvae: Small white grubs with tan or orange heads and covered in tiny hairs.
  • Eggs: White to yellow and laid in clusters of about three dozen in the soil. 

Timing of damage: V2 to V6

Type of damage: Defoliation. Look for irregular and elongated holes in leaves.

Scouting: Economic damage to soybeans from colaspis beetles has not been documented. It is considered a secondary pest of corn. 

Economic threshold: No economic threshold has been established.

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