Certain ants are pretty distinct. Thatch ants spray formic acid as a defense, and will have a sour smell (and taste, or so I’ve been told). Odoriferous house ants are named so for obvious reason, and smell (to me) like pen ink. Assuming they taste terrible, but I dunno anyone who’s tasted one.

Also, for what it’s worth, my entomologist father refers to the thread’s subject as “sow bugs”, so that’s how I know them, but pill bugs and rolly polly are common here.