Yellow Swarming Fly

Thaumatomyia notata

Appearance

Yellow Swarming Fly
  • Small approximately 3mm in length (similar to a fruit fly)
  • Adults are bright yellow with black longitudinal stripes on thorax and black transverse stripes on abdomen

Lifecycle

  • Often found hibernating in attics with cluster flies.
  • Little is known about these flies, however theie larvae feed upon aphids associated with grass roots

Habits

  •  Often found in large numbers in roof voids in Autumn where they over–winter.