huge black fly
Location: northwest
August 6, 2011 10:55 pm
I live in the country. Eagle creek Oregon. Found this in the laundry room. Its huge! All black. Little wings on top of its shoulders. Is it a horse fly? I’ve never seen a fly this huge before. Its crawling on a quarter!
Signature: Tina

Rodent Bot Fly

Hi Tina,
This is a Rodent Bot Fly, and we believe it is
Cuterebra tenebrosa which we identified on BugGuide.  These Bot Flies are skin parasites on rodents, and the host insect for Cuterebra tenebrosa is the wood rat.

Location: Oregon

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