Insects and Spiders - native

Soldier Fly (Hermetia illucens) on Aug 7, 2011

Originally reported as European Woodwasp (Sirex noctilio)

Submitter has sample

Description of specimen

Black, straight body, approx 3/4 inch in length with black antenna. Yellow legs with black tips. There appears to be a transparent hazy whitish part on the upper 1/3 of the abdomen when looking at it from underneath the insect. The lower 2/3 of the abdomen is black. The wings are bluish/black metallic in color.

Commentary

What should we do about them?

Reporter
Aug. 7, 2011, 5:33 a.m.

Douglas, thank you for your report. I have forwarded your report on to entomologists at the Oregon Department of Agriculture. As soon as I hear back, I'll let you know what they say.

Lisa DeBruyckere
Aug. 7, 2011, 8:04 a.m.

Hi Doug, please see the response from Jim LaBonte of the Oregon Department of Agriculture, and thanks for your report!

These are adult soldier flies, family Stratomyiidae, species Hermetia illucens. I believe this species is sometimes referred to as the black soldier fly. It is a native species now being sold as a biocontrol agent for filth flies in large chicken rearing facilities because it changes the manure into a habitat unsuitable for filth flies. The larvae live in dead plant or animal matter, such as wet compost, decaying vegetables, and carrion, or other wet organic material, such as manure. If they are emerging in a basement, there is some source, perhaps decaying rodent carcasses, rotting potatoes, etc. either in or near the basement (perhaps against a foundation). Removal and disposal of the source material will solve the problem. James LaBonte, ODA.

Lisa DeBruyckere
Aug. 8, 2011, 4:43 a.m.