How To Identify Worm Or Caterpillar

Question From: Steubenville, Ohio, United States
Q: Was given seed pods to dry for next year and found a worm like (caterpillar ?)about a half inch white to orange tinge (it had been on orange marigold pod.. wondering if indeed a caterpillar( early stage )or worm grown from a vector, (fly or whatever) that deposited eggs from unknown..My frame of reference is from nursing , so didn't think of caterpillar until i read a bit .. wondering your thoughts

A: There is no way I can comment. I would contact your county hort agent. Best And Happy Yardening, Nancy