General coloration black, praescutum with four more polished black stripes; head and mesonotum with coarse black setae; antennae, halteres, and legs black; wings blackish, with a conspicuous, more yellow brightening before cord, apical cells darkened; cell M1 present but variable in length; hypopygium black; genital shield of ovipositor orange. Male.-Length, 10 to 16 millimeters; wing, 10.5 to 16; antenna, 3.5 to 4. Female.-Length, 20 to 22 millimeters; wing, 15 to 17; antenna, 4.