Couplet 24.
History
[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 appearance and neve...
[22] If the marginalis is as long as distance f...
[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 appearance and neve...
[22] If the marginalis is as long as distance f...
marginalis distinctly longer than its distance from the basalis (Small species, ca. 2.5mm.; radial cell either open or closed but its length when closed, or as indicated by the incomplete radialis, at most but slightly greater than the length of the marginalis; seventh and eight gastral segments not clearly separated and together forming a smooth, narrow, downcurved, almost hairless segment which is closely ensheathed by the hypopygium; large sternite never humped at base (cf. Psilomma))
marginalis rarely nearly equal to its distance from the basalis and then it is much shorter than the radial cell or the radialis is virtually wanting and the large sternite is humped at base
future couplets
Pronotal collar on each side with a... ...
Acanosema Kieffer
Medial keel of the propodeum forked... ...
Belyta Jurine
Radial cell open at apex, the radia... ...
Zygota Foerster
Petiole at most one and a thirds ti... ...
Pantoclis
Pronotum elongate, without a vertic... ...
Belyta Jurine
Pronotum not elongate, with a more ... ...
Aclista Foerster
Gaster remarkably modified, showing... ...
Miota Foerster
Marginalis at least two-thirds as l... ...
Acropiesta Foerster
Marginalis at most one-third as lon... ...
Pantoclis
Radial cell widely open, the radial... ...
Psilomma Foerster