Black Soldier Fly

 Identification and Control

Proper identification is an important first step in controlling ants.

Hermetia illucens

How to Identify an 

Black Soldier Fly

Soldier flies are large and dark in color. They may have two white patches just behind the wings and have a flattened appearance. Soldier fly larvae and pupae are dark brown and flattened and are about 1 inch in length.

Where do they come from?

Soldier flies lay eggs in garbage and other decaying organic material, compost piles and dumpsters. Larvae stay in the site, but will pupate outside of the food source, sometimes around poorly cleaned dumpsters.

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What do they look like?

Side view of a black soldier fly
Wing venation is a key way to identify a black soldier fly
Solider fly larvae are dark brown and are 1 inch long
Eye and antennae of black solder fly
Soldier fly larvae are flattened in their shape
Unique face of a black solder fly. Note the large eyes

Where do they live?

Black solider flies can often get confused for being a wasp, but they are in the fly family. They are larger in size and can make a loud buzzing noise when flying which can alarm people, but they are actually harmless. Their abdomen tapers to a point that may start to look like a stinger, but no stinger is there. Black soldier flies are actually a bit lazy when it comes to flying. They can often be found hanging out on a sunny leaf.


Hermetia illucens




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