I collected some Microdon larvae from Lasius like formicine colony. I noticed yesterday that these piggies had finished their mound of ant larvae.
Today I head out to collect more ant larvae.
Microdon is a genus of syrphid flies that are myrmecophilous as larvae, feeding on ant young. These larvae are so bizarre, they were initially described as slugs. I thought this was a bit ridiculous, but this is all until I got to see them alive for myself. There undersides especially remind me of slugs – minus the slime.
This (these are Japanese species, click the images to enlarge) is what the adults look like, quite pretty and clearly a syrphid.
Posterior spiracle of a Microdon larva. A reminder that Microdon are in fact Diptera.