I found on a beach (near Thessaloniki, Greece) a few specimens inside a dead sponge. Very probably, larvae develop in the sponge, because there were many exuviae inside of pupae. Could help ID them, please?
I did replied it already in a personal message. it seems quite interesting information about findings of Anthicidae pupae and exuviae inside dead sponges. Coastal anthicids considered to develop mostly in sea drifts, rotten plant material etc.