Hey you kids, get off my poop!
~4mm total length, ♂. Saw this guy on a yarrow in our yard. (live oak/chaparral habitat). ID by Matthias Buck @ BugGuide.
True flies are insects of the order Diptera (from the Greek di = two, and ptera = wings). Their most obvious distinction from other orders of insects is that a typical fly possesses a pair of flight wings on the mesothorax and a pair of halteres, derived from the hind wings, on the metathorax. (Some species of flies are exceptional in that they are secondarily flightless). The only other order of insects bearing two true, functional...