Allegheny County, Pennsylvania, USA August 7, 2011 Size: 2.5 mm est.
These phorids were attempting to oviposit on Camponotus pennsylvanicus gathered on bait I put out for yellowjackets. Things were getting pretty miserable for the ants, which also had to contend with foraging yellowjackets. I did note an interesting behavior by the ants when threatened by phorid attack. When the flies were hovering above them, the ants began rapidly and constantly gyrating their abdomens, a behavior I haven't noticed before. Based on Brown 2002, I suspect these are Apocephalus coquilletti.
Contributed by Ben Coulter on 8 August, 2011 - 10:39am Last updated 3 January, 2013 - 8:19pm
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