Thursday
Aug022012
Tephritid Fly
Thursday, August 2, 2012 at 7:00AM A male Tephritid fly, probably Chaetostomella cylindrica (Diptera: Tephritidae), on knapweed (Centaurea sp).
Note the everted pheromone sac on the side of the abdomen. The males use these to attract females.
Photos taken Whiteknights Park, Reading, UK, on 2012-07-28.

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