cluster fly

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Related to cluster fly: House fly

cluster fly

(Animals) a dipterous fly, Pollenia rudis, that tends to gather in large numbers in attics in the autumn: family Calliphoridae. The larvae are parasitic in earthworms

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Documents showed reports of rodent activity in kitchens, stores and offices at the facility as well as a "cluster fly problem" in the light fittings on a ward.

HOSPITAL HIT BY EIGHT PEST OUTBREAKS; HEALTH TWO

I already have a cluster fly problem that I have been unable to solve.

Allow latex paint to cure fully

Another frequently encountered guest is the cluster fly, although, as the name suggests, you rarely come across just one.