Megachile pugnata, f, side, National Arboretum, DC

The magnificent mandibled Megachile pugnata. Look how long and wide those mandibles are. Its not clear to me why this species requires much longer mandibles than others, it appears to not be cutting out larger pieces of leaves for its nests, but perhaps it is the type, processing and location of the leaf material that is important. Specimen came from the National Arboretum in Washington D.C. where it was foraging on some sort of wild sunflower...it specializes on composites and sunflowers are one if its favorites. Picture by Hannah Sutton. Photography Information: Canon Mark II 5D, Zerene Stacker, Stackshot Sled, 65mm Canon MP-E 1-5X macro lens, Twin Macro Flash in Styrofoam Cooler, F5.0, ISO 100, Shutter Speed 200. USGSBIML Photoshopping Technique: Note that we now have added using the burn tool at 50% opacity set to shadows to clean up the halos that bleed into the black background from "hot" color sections of the picture.