Coleoptera (Beetles)
The order Coleoptera include the beetles, and are holometabolous, meaning they spend their immature stage as a larva, pupate, and then emerge as adults. Beetles can be recognized by their specialized hardened fore-wings, called "elytra."
Resources
Photo by M.E.S. Member Roger Rittmaster: Locust Borer (Megacyllene robiniae)
M.E.S. Member Photos of Coleoptera
Calleida purpurea (Coleoptera: Carabidae) 29 June 2014; Ross Rd. Blueberry Plains, Old Orchard Beach (York Co.) By Brandon Woo