Hello all,
I have a colony of Formica subsericea and I observed them doing something I've never seen before... I had placed a freshly cut slice of green apple in their food cup in their foraging area, and when I came back about 10 minutes later they had placed several dry 'husks' of Drosophila that they had been fed a couple of days earlier directly on the cut face of the apple...they left the dead flies on the apple for about half an hour, and then they proceeded to ingest them again...were they rehydrating with the juices from the apple to have a second go at the previously dried out flies? Totally blew me away...