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Extension > Garden > Diagnose a problem > What insect is this? > Insects found indoors > Winged Insects - 1/4 inch up to 1/2 inch > Face fly

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Face fly

Musca autumnalis

face-fly

Jeff Hahn, University of Minnesota


Size: 1/4 inch long

Description: Dull gray, similar to house flies; 4 narrow black longitudinal stripes on thorax; abdomen with light orange spots or with a black and gray pattern.

Where/When: Found in and around homes during fall and spring, and occasionally during winter.

Significance: Face flies feed on secretions around the faces of cattle and horses. They do not harm people and are only a nuisance when they cluster on the outside of buildings or get inside. They do not reproduce inside buildings.

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