This specimen appears to be of the same species as this one collected in the same spot two months earlier. The identification of both is tentative. This one suffered some physical damage before being photographed, too, so the colors aren't totally natural. I was mostly photographing it to test out some new camera setting idea, which worked really well for a couple of closeups.
Medius posterior: Vein MP is the posterior fork of the media, which is the “fourth” major longitudinal wing vein in insects. However, in mayflies, the two forks often appear to be separate veins all the way to the wing base. Vein MP itself sometimes forks into an anterior fork MP1 and a posterior fork MP2, although MP2 sometimes only indirectly connects to MP via a crossvein. MP and its forks are furrow veins (–).
These other words reference the same concept: media posterior, vein MP, MP vein, MP, vein MP1, MP1 vein, MP1, vein MP2, MP2 vein, MP2.
