Yellow Swarming Flies
Like cluster flies, Yellow Swarming Flies (Thaumatomyia notata) are normally active in places where lights are left on all the time. This population was found in an unused room in a block of flats in Haywards Heath. These pests look for places with nooks and crannies to overwinter so it’s best to get on top of the problem before winter. In this case, there were lots of dead flies in the light fittings which could cause a fire risk if not removed.
