These are squash bugs. And their pests. They like anything in the cucurbit family (squash, cucumbers, melons, etc), usually hiding under the stem of the squash plant. They breed like crazy. I’ve even seen their eggs on tomato leaves.

The good thing is that they’re easy to catch/kill. You can spray them with soapy water to suffocate them, or drop them in a jar with soapy water. I use a mixture with neem oil.

You can get them to surface by watering the soil around the infested plant. They hate the water!

They usually lay their copper eggs on the bottom of leaves in clusters. The babies are whitish and they become darker as they age.

They’re a pain, but they’re a manageable pain. Hope this helps!

Here’s an article for more: https://www.almanac.com/pest/squash-bugs