Spiny Tachinid Fly
Paradejeania rutilioides

orange fly
These are without a doubt the largest tachnid flies I have ever seen.
 I thought they were big fat bumblebees when I first
spotted them but
once I saw the spots on the back, I knew they were tachinids.  They were
3/4 inch long and very wide. Carol Davis 8-19-2009

large tachnid fly

 I found them in the Jordanelle wetlands below the dam in Wasatch County.  They were
actually a brighter orange than this photo depicts, but that's as orange as my camera
and Paint Shop Pro will make it.  Carol Davis, 8-19-2009

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