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Observed: 20th August 2011 By: Jubes
Added: 20th August 2011
Huge, maybe 30mm, and wasplike but did not make any noticeable sound. I watched half a dozen hornets (?) flying over a large number of flies and wasps on Polygonum baldschuanicum. They rarely landed but caught their prey and often flew off with the wasp/fly intact. I did catch one fly being consumed and a couple of hornets in some sort of conflict.