Squash bug eggs are reddish-brown and oval-shaped. They are usually found in clusters on the underside of plant leaves. In about 10 days, they hatch into baby squash bugs or nymphs.

A: These are squash bug nymphs (babies) and they are terrible for your plants. The adult squash bug is flat-backed, brownish black, and measures about 0.62 inches long.

image: Squash bug nymphs converge on a bit of adult feces. view more . Credit: Photo by Jason Chen. The squash bug carries a gut bacterium that is essential for the bug’s development into an adult.

Squash bug nymphs (pictured) need a certain type of bacteria to survive. They find it themselves in poop from adult squash bugs. Pollinator/English Wikipedia (CC BY-SA 3.0) ...

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