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House Fly

Stable Fly

Description

Species name: Stomoxys calcitrans (L.)
Family: Muscidae
 


 

The adult stable fly is about the same size as the house fly but can be readily distinguished by the mouthparts.
 

 
 

Heads of adult house fly (A) and stable fly (B) showing the differences in the mouthparts (proboscis).

Heads of adult house fly (A) and stable fly (B) showing the differences in the mouthparts (proboscis).
 

 
 

The stable fly has a stout, black proboscis which is used to pierce the skin and imbibe blood. Both the males and the females are bloodfeeders.
 

 
 

Diagram of the parts of the proboscis of the stable fly

Diagram of the parts of the proboscis of the stable fly
 

 
 

The stable fly is usually the only biting, blood-sucking fly breeding in any appreciable numbers in and around animal production facilities.
 

In addition to the distinctive mouthparts, the stable fly has a broader abdomen than the house fly and there is a checkerboard of dark spots on the dorsum of the abdomen.
 

The fourth vein (M1+2) of the wing is only slightly curved upward, much less than the fourth vein in the house fly wing (Figure 16C).
 

The stable fly has four longitudinal stripes on the thorax similar to those on the house fly.
 

Stable flies often become abundant around feedlots, dairy cattle loafing areas, and horse stables. They prefer sunny, outdoor conditions, although a few will enter buildings and breed there.
 

They are often found breeding in outdoor silage, decayed hay and piled manure mixed with bedding. Stable flies will also be found breeding indoors in dairy calf pens and outside in calf hutches where straw bedding is used.
 

Sometimes, stable flies are found inside in poultry manure containing spilled feed. However, the fly is primarily an outdoor pest, where it feeds actively on livestock.
 

It takes about 2–5 minutes for a fly to feed to engorgement. The feeding flies are most often found on the lower parts of animals, especially on the lower half of the legs. They will attack humans as readily as livestock.

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Anti-Fly Products
Agita, Spy, Oxyfly, Neporex, Larvadex
  Integrated fly control means using a two-pronged attack on flies: larvicides to prevent fly larvae developing into adults, and adulticides to kill adult flies.  
Larvicides
Figure 16A-F
Wing of the stable fly.

16C. Wing of the stable fly, Stomoxys calcitrans, showing the vein M1+2 onyl slightly curved forward towards vein R4+5.