Figure 17. Adult housefly.
Figure 1-18. Housefly mouthparts.
b. Blowflies (Family Calliphoridae). These flies are related to the housefly
and have essentially the same potential for mechanically transmitting disease, as do
houseflies. The life cycle is similar to that of the housefly. Blowflies may be identified
by their large size and shiny blue, green, or black abdomen. Shiny, green flies in this
family are about housefly-size. Various species of these files breed in animal
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