The anal cell of wing and the anal vein of wing are both present.
3.
Many have a well-developed anal lobe in the wings, and / or a small but distinct anal cell.
4.
Crossvein BM-Cu is present; the cell cup ( posterior cubital cell or anal cell ) is closed and nearly always narrowing to an acute angle.
5.
The costa is entire, without interruptions; the subcosta is reduced; posterior basal wing cell and discoidal wing cell are fused; anal cell of wing and anal vein of wing are absent.
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