DescriptionThe top of the thorax has undivided blue stripes. Abdominal segment 2 has a black mark on top, but usually none on the sides. Appendages shown in figure. Female yellow-green to tan, marked with black; the bases and sides of abdominal segment 8 are mostly pale, and the tops of segments 9 and 10 mostly black. Length: ♂ 28 mm, ♀ 31 mm.
Flight PeriodB.C., late May to early August.