The Diapriidae

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 Foerster

Notaulices present; antenna with 12...

Antenna with 12 segments ... Synacra Foerster

Antenna with 15 segments

Seventh tergite clearly separated f...

Propodeal keel forked; petiole very... ... Belyta Jurine

Propodeal keel not forked; petiole ... ... Zygota Foerster

Seventh tergite not clearly separat...

In profile, lower side of gaster ve... ... Acropiesta Foerster

In profile, lower side of gaster sl... ... Pantolyta

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Macropterous species

future couplets

Notaulices wanting; head strongly t... ... Ismarus Haliday

Notaulices distinct throughout (exc...

Mandibles forming a short, triangul...

Antenna with 12 segments; sides of ... ... Synacra Foerster

Antenna with not less than 14 segme...

Occipital margin not bordered with ...

Antennae with 14 segments; stigmali... ... Atelopsilus Kieffer

Antenna with 15 segments; stigmalis... ... Opazon Haliday

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 Kieffer

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 Jurine

Marginalis much longer than stigmal... ... Oxylabis

Base of large tergite without trace... ... Pantoclis

Only 2 discrete ring segments betwe... ... Aprestes n. gen

Scutellum normally without any kind...

Mandibles very long, sickle-shaped ...

Marginalis reduced to a mere juncti... ... Pamis gen .n.

Marginalis never as short as this a...

Marginalis considerably longer than... ... Cinelaptus gen. n.

Marginalis never longer than either...

Postscutellum with a prominent angu... ... Paroxylabis Kieffer

Postscutellum without such a proces... ... Aclista Foerster

Mandibles of the ordinary form, sho...

Segment 1 of flagellum enormously l... ... Diphora Foerster

Segment 1 of flagellum of normal ap...

Marginalis very long, at least as l...

Notaulices slightly divergent poste... ... Cinetus Jurine

Notaulices evenly convergent, their... ... Leptorhaptus Foerster

If the marginalis is as long as dis...

Marginalis distinctly longer than i... ... Pantolyta Foerster

Marginalis rarely nearly equal to i...

Pronotal collar on each side with a... ... Acanosema Kieffer

Pronotum rarely with a hollow on ea...

Epomia at least sufficiently well d...

Medial keel of the propodeum forked... ... Belyta Jurine

Medial keel of the propodeum not fo...

Gaster simple in the sense that it ...

Radial cell open at apex, the radia... ... Zygota Foerster

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 Jurine

Pronotum not elongate, with a more ... ... Aclista Foerster

Gaster remarkably modified, showing... ... Miota Foerster

Epomia absent so that the surface o...

Radial cell completely closed, the ...

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

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