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Muscidae and Other Families March 2, 2009
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Muscidae Large fly group Includes number of species of economic/public health importance House fly, face fly, stable fly, horn fly, latrine fly
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General Adult Appearance Frontal suture on head 3 segmented antenna with subterminal arista Wing with 1-3 posterior cells on wing Has large calypteres Meron bare
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Musca domestica House fly Everywhere there are humans 6-9 mm Dull grey body, 4 longitudinal stripes Wings held apart when at rest 1st attracted to excrement, follows blow flies to carrion
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Hydrotaea sp. Dump flies All over US Common on excrement during hot months < 6 mm Occurs late in succession--after 4-5 months 2nd/3rd instars facultative predators
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Fannia sp. Lesser/little house fly, latrine fly 6-7 mm, everywhere Dull brown to black 3 stripes on thorax Larvae small and flat with lateral processes on each segment Active during summer Larvae in liquified material
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Muscina sp. False stable flies Throughout US Most active during summer, somewhat active year- round 8-10 mm--slightly larger than houseflies w/ heavier bodies Pale tip on scutellum Attracted to carrion in late stages of decay Able to reach shallow bodies 3rd instar larvae are predaceous
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Synthesiomyia nudiseta 7-10 mm (one of larger muscids) Grey w/ checkered abdomen 4 longitudinal stripes Palps on antennae yellow-orange Terminal segment yellow (not red) Larvae large and predaceous Will eat C. rufifacies Puparia in silky white substance soil adheres
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Sepsidae Black Scavenger Flies Adults 2.3-3.5 mm Look like parasitic wasps Spherical head, clear wings with dark spot at tip Tiny maggots <5 mm All over US, active in Texas as long as over 45-50 F Fee predominantly on dung, but sometimes on carrion
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Piophilidae Skipper flies Gnat-like insects--< 5 mm Shiny blue-black, lower legs yellow Small larvae 6-9 mm Can jump/skip Adults found on body early, larvae late Life cycle 11 days (or more)
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Phoridae Scuttle Flies, coffin flies Run in jerky manner Most active in later stages of decay Able to dig down to coffins ~0.5 m in a few days Can complete life cycle under ground 55 million flies--60 days
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