1A	Claws simple, without basal lobes. Metasomal tergite 6 of females longer dorsally than ventrally in lateral view, posteroventral margin sinuate, strongly curving forward in lateral view, and not covering ventral portion of T7. Scutellum with auricula (laterally with semilunar, slightly impressed area set off by distinct carina). Posterolateral pronotal margin not incised, mesopleural triangle not deeply impressed anteriorly (Mayrellinae)	Paramblynotus
1B	Pro- and mesotarsal claws with basal, lamellate lobe. Metasomal tergite 6 of females as long ventrally as dorsally in lateral view; posterior margin straight to gently curved forward in lateral view and covering ventral portion of T7. Scutellum laterally without auricula. Posterolateral pronotal margin distinctly inflected in front of mesopleural triangle, the latter deeply impressed anteriorly (Oberthuerellinae)	2
2A	Mesopleural surface not concave; mesopleural impression present; mesopleuron at least partly horizontally strigate ventrally. Anterior metatibial spur shorter than posterior metatibial spur. Metasomal terga 3–5 fused, inter-tergal sutures at least partly invisible	Xenocynips
2B	Mesopleural surface distinctly concave, the concavity forming oblique, shallow femoral groove; mesopleural impression absent; mesopleuron not horizontally strigate ventrally. Metatibial spurs subequal in length, elongate. Metasomal terga 3–5 not fused, inter-tergal sutures distinct	3
3A	Pronotal crest produced into conspicuous tooth-like process. Ventral margin of mesopleural impression visible as well-defined ventral margin of obliquely costate area of mesopleuron. Metanotal trough absent. Metafemoral spine triangular, broad-based, oblique	Tessmannella
3B	Pronotal crest not produced into conspicuous tooth-like process, but occasionally produced into small, triangular process. Ventral margin of mesopleural impression not marked. Metanotal trough clearly indicated. Metafemoral spine elongate, narrow-based, erect	Oberthuerella