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enter image description hereI've seen several of these insects near my house in southeast Michigan this summer, including the one seen here feeding on a green bottle fly. What are they?

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  • $\begingroup$ Probably Efferia or Promachus but I can't know for sure without knowing the size. How big was it? $\endgroup$ – Praearcturus May 26 '20 at 7:14
  • $\begingroup$ @Praearcturus IIRC 2-3cm, but not positive. Feels like forever ago :) $\endgroup$ – Conduit May 26 '20 at 20:38
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That looks like a type of "robber fly" — compare with this image: From BugGuide — contributor Mark Swanson

BugGuide is a great resource for identification of insects, spiders and their ilk.

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  • $\begingroup$ Definitely correct! Thanks $\endgroup$ – Conduit Jul 30 '19 at 0:11
  • $\begingroup$ You're welcome, glad I could help! $\endgroup$ – tyersome Jul 30 '19 at 0:20

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