Arguably the largest and most impressive fly species of northern Europe.
They seem to constantly be on the hunt for prey and they don't hesitate to attack even large insects such as dragonflies.
This summer I caught one in order to measure it's size. While handling it I was quite surprised when it actually managed to puncture the skin on my finger with its proboscis (not a pleasant feeling)! I've never experienced a robber using it's proboscis in defence before.
This is a late evening stack from 18 natural light exposures.
Canon 5DmkII, Canon MP-E65 @ 1.0X, 1/5s, f/5.0, ISO250