conniption bug n
= hellgrammite n 1. Note: While this term frequently appears in later lists of names for the hellgrammite, further evidence of actual use is lacking.
1882 Amer. Angler (Ed. Harris) 2.53 nePA, We sum up—Corydalis cornutus, is his baptismal scientific name, but he is also called: Conniption bug at Towanda, Pa.