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Extension > Garden > Diagnose a problem > What insect is this? > Garden Pests > Beetles, bugs, ants, and other insects without obvious wings - Under 1/4 inch long > Squash bug

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Squash bug (young nymph)

Anasa tristis

Squash bug

Jeff Hahn, University of Minnesota

Squash bug

Jeff Hahn, University of Minnesota

Size: 1/10 - 5/8 inch long

Description: Light green to light gray body with black legs and black head. Often found clustered in groups.

Where/When: Feeds on squash, pumpkins, and other cucurbits, like cucumbers and melons. Adults appear in May and all life stages are present throughout the growing season.

Significance: Feeding can cause yellowing and wilting. Young plants are more susceptible to injury than older plants.

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