Platycheirus trichopus, also known as the western forest sedgesitter, is a species of syrphid fly in the Bacchini tribe of the Syrphidae family.

[1][2] This flower fly is typically found west of the Rocky Mountains in North America.

[3] Most Platycheirus species cannot be identified past genus without microscopic examination, but according to Even Dankowicz, P. trichopus has a unique set of characteristics that make it an exception when/where high quality images of the head/face are available.

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