[1] Macropterous species
[7] Notaulices distinct throughout (except in _Synacra_;...
[8] Mandibles not forming a beak, the outer side of one ...
[12] Scutellum normally without any kind of sculpture pos...
[17] Mandibles of the ordinary form, short and only sligh...
[21] Segment 1 of flagellum of normal appearanc...
marginalis very long, at least as long as its distance from the basalis and fully as long as the radial cell. (radial cell always completely closed; gaster almost always modified in the sense that some telescoping of the apical segment takes place; ovipositor, if visible at all, never long, and thread-like, its sheaths projecting at most as a short stub; petiole at least one and a half times as long as wide and then the apical segments of the gaster more or less completely retracted)
If the marginalis is as long as distance from the basalis then either it is obviously shorter than the radial cell or the radial cell is completely open or there is no telescoping of the apical gastral segments and 4 ring segments beyond the large tergite are discernible. (Except in Miota_, the gaster is unmodified apically and 4 clearly defined ring segments can be counted beyond the large tergite; class/show/540" class="passed">ovipositor frequently projecting in death as a long, thread-like organ)