Nicely marked Purple-backed Cabbageworm (Evergestis pallidata) feeding on a sedum in flower. From the Franklin Park Zoo Nocturnal Insect Night.
Whoa, just realized that I reached 1500 followers today! Here’s a bonus BotD, a lovely jewel beetle (Chrysobothris chlorocephala) for #1500, @drea-alfa-wolf !
P.S. - Those tick marks on the left are millimeters. This is a wee beetle!