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Mosquito Control - Main Office
 
Hours
Mon - Fri: 7:30am - 5:00pm
 
Phone
(407) 742-0505
 
Address
1 Courthouse Square,
Suite 3100
Kissimmee, FL 34741

Midges

(Aquatic) Midges or Blind Mosquitoes

SIZE: From 3/16 to 1/2 inch (5-12.7mm)

COLOR: Pale

DESCRIPTION: Name applies to mosquito-like flies in the family Chironomidae. They are different from mosquitoes in that female midges don't bite; males have large, bushy antennae. Adults produce a high-pitched humming sound when they swarm.

HABITAT: In Florida, the larvae are abundant in small and large natural lakes, waste water channels, sewage oxidation and settling ponds, and residential-recreational lakes. Adults frequently collect in large swarms in late afternoon or evening near streams, ponds, and lakes. They are often attracted to outdoor lights of houses close to these swarming sites.

LIFE CYCLE: There are 4 stages in the life cycle - egg, larva, pupa and adult. The eggs are laid in a mass on the surface of the water containing 10 to 3,000 eggs depending on the species. Each mass of eggs is enclosed in a gelatinous substance which is usually attached to the edge of the lake, stream or river, and twigs in contact with the water. Egg masses not attached to objects will sink to the bottom where the eggs hatch. Eggs of aquatic midges usually hatch in 2 to 7 days.

The newly hatched larvae feed on the gelatinous material for about 2 days. The adults which emerge mate during swarming at night. The adults do not feed during their adult existence and consequently only live for 3 to 5 days. The entire life cycle can be completed in 2 weeks, although it is common for the life cycle to take longer to complete.

TYPE OF DAMAGE: Although they do not bite, the adults can be a severe nuisance simply by their numbers.

CONTROL: Stock ponds with native fish. Reduce organic laden run-off from grass and trees by not blowing leaves and grass clippings into stormwater systems. Turn off outside lights at night. Close window blinds and curtains to keep light inside. Place a bright light to act as a draw in the community away from residences.

INTERESTING FACTS: Often mistaken for mosquitoes. The difference is that female mosquitoes do bite; female midges do not.

Information provided by the University of Florida IFAS Extension and the Virginia Cooperative Extension.