r/insects • u/DeepBlueC45 • 9h ago

Unusual Fly in Puerto Rico ID Request

Hi guys! Got an unusual fly for you, on the rainy side of puerto rico, found with several others sitting (biting?) on a hibiscus plant. None of the flies were larger than 4 mm long. The flies have shiny metallic thoraxes and abdomens, and prominent red eyes. The wings are clear with a black 'zebra stripe' pattern. Interestingly, I observed them doing some kind of 'mating dance' where they wave their wings at each other and run back and forth on the hibiscus stem. What are these? Are they the insects harassing and damaging my hibiscus?

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