Flies are fascinating!

This bristle-backed orange-and-black beauty, Tachina fera, is commonly seen in Wales and England any time between May and October. These flies produce two broods over the summer months but their life cycle is perhaps not what you might think. Like almost 300 other fly species in Britain, these are parasitoids – the eggs they lay on plant leaves hatch as larvae that burrow their way inside the bodies of other larvae, the caterpillars of several species of moth, which they then proceed to eat to death. It’s a larvae-eat-larvae world out there, folks.