Subject: Garden Bug or Alien life form??
Geographic location of the bug: Annapolis Valley Nova Scotia Canada
Time: 09:26 AM EDT
Your letter to the bugman: This bug is in my garden eating my squash and cucumber leaves
How you want your letter signed: Blech
These are Squash Bugs in the genus Anasa. In addition to feeding on squash, according to BugGuide: “hosts: Cucurbitaceae” which includes the plants you mentioned as well as melons and pumpkins.