The Diapriidae

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couplet #1
History
Nixon (1957) - Subfamily Belytinae - Females (at the start)

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Micropterous species

future couplets
Notaulices wanting; antenna with 14... ... Anommatium
Notaulices present; antenna with 12...
Antenna with 12 segments ... Synacra
Antenna with 15 segments
Seventh tergite clearly separated f...
Propodeal keel forked; petiole very... ... Belyta
Propodeal keel not forked; petiole ... ... Zygota
Seventh tergite not clearly separat...
In profile, lower side of gaster ve... ... Acropiesta
In profile, lower side of gaster sl... ... Pantolyta
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Macropterous species

future couplets
Notaulices wanting; head strongly t... ... Ismarus
Notaulices distinct throughout (exc...
Mandibles forming a short, triangul...
Antenna with 12 segments; sides of ... ... Synacra
Antenna with not less than 14 segme...
Occipital margin not bordered with ...
Antennae with 14 segments; stigmali... ... Atelopsilus
Antenna with 15 segments; stigmalis... ... Opazon
Occipital margin above with a borde... ... Rhynchopsilus
Mandibles not forming a beak, the o...
Scutellum with a row of foveae acro...
Petiole about two and a half times ... ... Paroxylabis
Petiole at most one and a half time...
Four discrete ring segments between...
Base of large tergite with a transv...
Marginalis not longer than stigmali... ... Belyta
Marginalis much longer than stigmal... ... Oxylabis
Base of large tergite without trace... ... Pantoclis
Only 2 discrete ring segments betwe... ... Aprestes
Scutellum normally without any kind...
Mandibles very long, sickle-shaped ...
Marginalis reduced to a mere juncti... ... Pamis
Marginalis never as short as this a...
Marginalis considerably longer than... ... Cinelaptus
Marginalis never longer than either...
Postscutellum with a prominent angu... ... Paroxylabis
Postscutellum without such a proces... ... Aclista
Mandibles of the ordinary form, sho...
Segment 1 of flagellum enormously l... ... Diphora
Segment 1 of flagellum of normal ap...
Marginalis very long, at least as l...
Notaulices slightly divergent poste... ... Cinetus
Notaulices evenly convergent, their... ... Leptorhaptus
If the marginalis is as long as dis...
Marginalis distinctly longer than i... ... Pantolyta
Marginalis rarely nearly equal to i...
Pronotal collar on each side with a... ... Acanosema
Pronotum rarely with a hollow on ea...
Epomia at least sufficiently well d...
Medial keel of the propodeum forked... ... Belyta
Medial keel of the propodeum not fo...
Gaster simple in the sense that it ...
Radial cell open at apex, the radia... ... Zygota
Radial cell closed at apex, the rad...
Petiole at most one and a thirds ti... ... Pantoclis
Petiole fully one and a half times ...
Pronotum elongate, without a vertic... ... Belyta
Pronotum not elongate, with a more ... ... Aclista
Gaster remarkably modified, showing... ... Miota
Epomia absent so that the surface o...
Radial cell completely closed, the ...
Marginalis at least two-thirds as l... ... Acropiesta
Marginalis at most one-third as lon... ... Pantoclis
Radial cell widely open, the radial... ... Psilomma
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