Status of the Fire Ant Decapitating Fly Pseudacteon tricuspis (Diptera: Phoridae) in Louisiana

Donald C. Henne, Seth J. Johnson, Sanford D. Porter


Eight releases of the South American fire ant decapitating fly, Pseudacteon tricuspis Borgmeier, were conducted in Louisiana from 1999 to 2006. Although P. tricuspis was initially recaptured at 88% of the release sites, four of the releases ultimately failed, so long-term establishment was only 43%. Fly populations from two releases have expanded out 50-80 km from their release sites (Fall 2006).

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