Rod Williams / Black scavenger fly (Sepsis punctum) feeding on minute food particles off bramble leaf, Brockley Cemetery, Lewisham, London, England, UK. October.

Nick Upton / Lesser dung / Black scavenger fly (Musca / Sepsis cynipsea) male displaying by flicking its wings. Wiltshire pastureland, UK, April.

Simon Colmer / Swarm of Manure flies {Sepsis fulgens} Sussex, UK - swarming is common in autumn

Premaphotos / Manure fly (Sepsis fulgens). Part of a huge swarm on vegetation, possibly aggregating for sexual purposes, UK

Neil Aldridge / Lesser dung fly (Sepsis fulgens) excreting onto the tip of a grass stem which it then walks down, Somerset, England.