|Face Fly biology, identification, image, control tips and
products for eliminating face flies.
The face fly is similar in appearance to the common house
fly but is somewhat larger and darker in color. The eyes of the male face fly nearly
touch on the top of the head while those of the male house fly do not. Trying to
properly differentiate between females of these two pests is very difficult. Flies
of this genus have a narrow band of very small hair-like pile on each side of the face so
that the front appears to be bordered by two delicate, velvety stripes. These
stripes run from near the top of the head to the lower margin of the face separating the
eyes from the bases of the antennae. This velvety stripe has a silvery sheen
throughout the entire length of the face fly. The upper half is silvery and the
lower half grades into a definite yellowish-gold hue on the house fly. Both males
and females will show these differences. Male Face Flies are commonly found
congregating on certain flowers.
Face flies are generally found on cattle farms because
they develop in fresh cow manure. Homes or other structures located close to
ranches, farms or stockyards are most likely to become infested.
Face flies lay their eggs on fresh manure during the
summer months. The yellowish colored larvae live in the manure until they are mature
and then pupate either in the soil or on the surface of the soil under the manure.
Adults feed on mucous and watery secretions around the eyes and nostrils of horses and
cattle causing great discomfort and annoyance to the animals.
During the fall and winter months adult face flies may
hibernate in the walls of homes and other structures. As daytime and evening
temperatures begin to drop, the adult Face Flies will be attracted to the warm walls of
homes. The walls on the south and east sides of buildings are the ones usually
affected because the late summer sun shines most on these sides. The same can also
be said of the Cluster Fly. On warm days, the flies become active and will often
move to the inside of homes in alarming numbers. Once they have responded to the
warmth of a home's interior walls, face flies are strongly attracted by light and so are
usually found around windows. At night, the flies will fly around light bulbs.
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Face Flies can sometimes be found congregating on open
surfaces in attics, false ceilings or crawlspaces. Other than finding such a
gathering in one or more easily seen areas, adult Face Flies will be hidden in cracks,
crevices and other hidden voids.
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|The key to eliminating Face Flies is to locate the voids in which
they overwinter and treating these areas with a surface spray and dusting the smaller
areas with Delta Dust .
|Treat open surfaces in attics and crawlspaces where adult Face
Flies are seen congregating (or where you suspect they might hibernate) with a good surface spray. Liquid surface sprays are applied with a
garden pump sprayer such as our Chapin Sprayer. Apply Delta Dust to cracks, crevices, wall voids, beneath insulation
or other areas where insects might hide. For best results, apply your dust with a Crusader Duster. This will allow you to
penetrate your product deep into areas where insect pests might try to over-winter.
|Seal all possible entry points on the exterior of your home.
It would be almost impossible to eliminate every little crack, but try to limit the
number of entry points to the best of your ability.
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