Fruit Fly and Drain Fly
Also called “moth flies” drain flies are small (1/16-1/5 inch), dark grey or black in color, and have a fuzzy like moth appearance. They only fly a few feet at a time , so they are mostly found near their harborage sites (sinks and tubs) Females lay masses of 20-100 eggs that hatch in less than 48 hours. The larve are small (3/8 inch) and legless with brown bands and last about 1-3 weeks. Drain fly larvae and pupae live in the thin microbial film found in drains and feed on the alge, bacteria, and other micro-organisms associated with the the film. To control drain flies it is important to clean drains and u traps where they are breeding and follow up with an enzyme cleaner. A combination of an adulticide and an IGR, such as pyriproxyfen. Can provide immediate and long-term control.
Are known for their ability to reproduce quickly. Under Optimum conditions, a fruit fly larvae can complete their life cycle in as few as 8 days. Fruit fly adults are approximately 1/8 inch with a stout, cylimdrical body and usually have reddish eyes. Fruit flies do not bite, but most people consider them annoying. Common breeding areas are over pipe or damaged fruits and spoiling vegetables, such as rotting potatoes or onions. In commercial kitchens they can also be found under equipment, soft drink dispensers, and in cracked tile or flooring. Removing spoiling fruits or vegetables and treating drains and other hard-to-reach areas with a foaming agent and an IGR can provide long term control of fruit flies.
Are approximately the same size of fruit flies but are hump backed and frequently run or hop instead of fly. They also have a longer life cycle than fruit flies, taking 14-37 days from egg to adult depending on conditions. Larvae feed on decaying plant and animal matter and breeding sites include garbage, wet potted plants, broken garbage disposals etc. Phorid flies can also be found in soil that has been contaminated by sewer line leaks. These leaks can occur under buildings and lead to severe indoor fly infestation and require extensive excavation to remove the contaminated soil.