 There are two veins branching from cross-vein DM-Cu in the direction of the wing margin; the upper one in some species curves strongly or forks into M1 and M2.R4+5 are simple, and costa ends near or at M1/M1+2, or continues along the wing margin.The point of origin of Rs is at or very close to h.

The abdomen is elongate-conical or flat.