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Squash Bugs - Garden Insect Library - Saferbrand

Squash Bugs

Squash bugs are known for the unpleasant odor they use for defense.

 

In both adult and nymph stages, the squash bug sucks the juices from the plant, making the leaves of the pumpkin, squash or other cucurbits turn blackish and die.

 

 

 

 

So... What's a Squash Bug?

Squash bugs are known for the unpleasant odor they use for defense. Adult squash bugs are brownish gray to brownish black in color and measure approximately 5/8" in length.

 

They have a flat oval appearance. Nymphs are similar in shape to adults, but they are grayish white or green in color and are smaller than adults. Eggs are brownish yellow and grouped in clusters on the underneath of leaves.

 

 

 

 

Reproduction Patterns of Squash Bugs

Squash bug larvae

Adult squash bugs overwinter under garden plant debris, field crop debris, old leaves or boards, and then emerge in the spring to mate. Female squash bugs lay their eggs in clusters on the underneath of leaves.

 

These eggs will hatch in a little over a week, and the nymphs will spend the entire summer going through 5 instars or moltings until they develop into adult squash bugs. There is usually only one generation of squash bugs produced in a year.

 

 

 

 

Squash Bug's Habitat

Found throughout North America, this pest feasts on squash and pumpkin plants, as well as other cucurbits.  They can be found in agricultural fields or in home gardens, infesting the area in groups or colonies.

 

 

 

 

Images courtesy of Oklahoma State University and Forestry Images.
For a complete list of content sources please visit our site bibliography page

 

 

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