This is why they’re called “signal flies”


Signal flies (DipteraPlatystomatidae) get their common name from the fact that their wings are in almost constant motion, as if signaling.  One of the few times they stop this behavior is when they’re mating.  This individual was recorded on a fallen log near some raccoon feces in a floodplain forest near Blissfield Michigan on 10/23/2011.

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About Jeremy Sell

Science and nature nerd.
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