This topic is likely posted in the wrong section. I apologize, and hope the mods move it to the correct place.
Not too long after I switched my G. portentosa colony to a more naturalistic look (leaf litter, hardwood chunks, oak log centerpiece), I noticed that the population of lesser mealworms in that enclosure had exploded. Since they're too small to feed to anything but my Lactrodectus slings, I wanted to cut down on their population a bit. They're good as a clean-up crew, but the adults were starting to bother some of the hisser nymphs. So I decided to add some Pterostichus melanarius that I had found while collecting Parcoblatta americana nymphs. They're doing the job well; they don't seem to bother the hissers, and occasionally (if I'm watching the colony late at night) I'll see one of them carrying a mealworm larva around. This evening, though, I witnessed some unexpected behaviour from one of them: it was eating fruit! All of the literature I've read about them says they're carnivores, but I guess they missed the memo!