@myrmepropagandist I was at the American Museum of Natural History yesterday. Watching the leaf cutters, I noticed piles of brown dust-like material outside the glass bulbs that serve as fungus growing chambers. There were piles outside most of the chambers, empty, full, or partly full.

My guess is that they were piles of dead ants. The docent didn't know.

I'm wondering whether you have a second to tell me what they were.

Thanks!