Tech Test: Fortify your knowledge of flies

Reviewed by Mark VanderWerp, BCE, manager of education and training, Rose Pest Solutions, Madison Heights, Mich.

Slimy surroundings

Drain fly (Psychodidae) larvae and pupae live in the thin microbial films often found in drains and underground septic tank field lines, and on filter stones in wastewater treatment plants. They feed on algae, bacteria, fungi and other microscopic organisms associated with the film. Indoors, drain flies can breed in floor or sink drains, air conditioner and refrigerator condensate pans, bottoms of garbage cans, under broken or cracked tile, in tracks of sliding glass doors, in wet cracks in the floor and around dirty floor drains.

Answers to July Tech Test

1. True, 2. c, 3. True, 4. True, 5. a, 6. d, 7. False, 8. c, 9. d, 10. a

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