Might as Corn Doc Erick. If anybody would know corn worms it would probably be him.
I tried to get a positive ID of the worms in Magnoliagamecalls' pic, but after having three Entomologists (bug professionals) who know their stuff look at it, they couldn't confirm the subtle differences needed to produce positive ID.

Prolly a variant of armyworms.
It is certainly an impressive crop of worms though.