UPDATE —— NOT a blister beetle. They’re ground beetles (Carabidae). Thanks all your your advice. Ag agent was so helpful.
Yesterday when cleaning my stall under horse’s empty hay net I found a black beetle. I took a picture and felt uneasy. I checked the 2 pads of hay I refilled his net with as best I could pulling them apart and didn’t see anything. This morning I found 3 more beetles in the pads of hay I peeled off the bale. .
So yes…. I googled images and descriptions of blister beetles. The pics appear more elongated than the critters I am seeing but bear in mind these beetles have been pressed/squashed during baling and are pretty desiccated.
I threw the bale out. I’d rather lose $25 than risk my horse ingesting blister beetles. Can I take the beetles I found to an ag extension office? Should I ask the feed store. Horse is going to have to eat his straight Timothy until I figure out if I’m over reacting.
What are the chances a harmless black beetle seems to be baled into my hay?
Would you have tossed the bale?