Insect identification

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Lesser House Fly

Fannia canicularis

Identification

  • Adult is 3.5 – 6mm.
  • Has 3 brown stripes on the thorax.
  • Abdomen has yellow margin.

Characteristics
Like to live in decaying organic debris, including carcasses, and animal manure. Found often in food service facility bathrooms.

Control

  • Sanitation is the key.
  • PestWest Insect light traps.
  • Drying the areas of breeding.
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Blow Fly

Calliphora spp.

Identification

  • Adults are 10-12mm.
  • Have a dull thorax with a metallic abdomen.

Characteristics
Often used in deciding time of death in crime scene investigation. 1100 species worldwide.

Control

  • Sanitation as in removal of breeding material (carcasses).
  • Removal of the dirt or area adjacent if available.
  • PestWest Insect light traps.
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Cluster Fly

Pollenia rudis

Identification

  • Adults are 7-9mm.
  • Thorax usually lacking distinct stripes but possesses numerous wrinkly yellow/golden hairs (may be absent in older specimens).
  • Abdomen with irregular lighter areas.

Characteristics
Larvae parasitize earthworms. During cold weather, large numbers of flies aggregate within attics and structural voids (with warm temperatures-emerge indoors).

Control

  • Exclude through sealing and appropriate insecticidal treatment of openings leading into void areas.
  • Window Wonder Trap with Cluster Fly Lure at the base of windows (especially on western and southern exposures). Place Window Wonder Trap with Cluster Fly Lure in walk-up attics or above suspended ceilings where Cluster flies are observed.
  • PestWest Insect light traps are very effective.
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Fungus Gnat

Sciara thomae

Identification

  • Adults are small 3-5mm.
  • Dark in color almost black.

Characteristics
Pollinators. Larvae feed on fungi, frequently associated with plant roots, aid in decomposition. Typically found in overwatered houseplants.

Control

  • Look at plants with secondary decorative pots.
  • Look for plants inside that were recently brought indoors or have had potting soil changed recently.
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Fruit Fly

Drosophila spp.

Identification

  • Adults are 4-6 mm.
  • Tan color with abdominal stripes.
  • Red or dark eyes.
  • First set of cells on the wings are thickened

Characteristics
Fruit fly is widely used in genetic research.

Control

  • Sanitation is critical.
  • Window Wonder Trap for floor-level monitoring and secondary control.
  • Demi Diamond for elevated spatial, walk-by monitoring and secondary control (add desired lure such as malted vinegar to the 30 ml reservoir at the bottom of washable station).
  • PestWest Insect light traps are effective.
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Mosquito

Culex spp.

Identification

  • Adults vary in size 5-16mm.
  • Scaled wings and body.
  • Slender body with long legs.

Characteristics
Vectors of many human and animal diseases. Immature stages live in a variety of moist environments.

Control

  • Drain water in containers and pool areas.
  • Be sure screens are in good shape.
  • Keep vegetation to manageable levels, especially next to water.
  • Use protective creams containing DEET on the outside.
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Wasp

Vespula spp.

Identification

  • Adults vary in size 15-20mm.

Characteristics
Black head and thorax, black and yellow patterning on abdomen.

Control
PestWest sticky traps and electronic fly killers are particularly effective at attracting and controlling wasps.

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Scuttle / Phorid Fly

Megaselia spp.

Identification

  • Adults are 5-6mm.
  • Dark flies humpbacked in appearance.
  • Wing veins have a dark edge in the first cells.

Characteristics
Have a habit of ‘running’ before they fly. 3000 species in 230 genera. Can be found in carcasses.

Control

  • Sanitation is the key.
  • PestWest Insect light traps.
  • Look for areas with decaying organic debris left for more than a few days.
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Biting Midge

Culicoides spp.

Identification

  • Dark brown/black in colour.
  • Wingspan 3-4mm.

Characteristics
Will swarm in large numbers and inflict bites.

Control
Insect repellents should be used when outdoors to prevent bites. Chameleon® sticky traps will attract and control midges.

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Common Housefly

Musca domestica.

Identification

  • Adults are 6-9mm
  • 4 longitudinal stripes on their thorax.
  • Underside of the abdomen is yellow.
  • Red compound eyes (males are closer together).
  • 4th Large wing vein has a sharp upward bend.

Characteristics
Live in moist organic debris. Capable of carrying and possibly transferring over 100 different human pathogens. The life cycle speeds up in warmer temperatures.

Control

  • Sanitation is the key.
  • PestWest Insect light traps are very effective.

Please click HERE or image to download “Fly Identification”.

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