Tribe Tamdaonini van Achterberg, trib. n.

(Figs 48–110)

Diagnosis. Antenna with 20–28 antennomeres; labrum normal (Figs 56, 73); mandibles normal, teeth bent inwards and overlapping each other when closed (Figs 56, 81); pronope wide and deep (Fig. 85) or as transverse crenulated groove (Fig. 61); precoxal sulcus present submedially and crenulate (Figs 83, 91, 102); mesoscutum with linear or narrow elliptical medio-posterior depression (Figs 51, 85); vein 3-CU1 of fore wing at most moderately oblique (Figs 79, 90); basal half of fore wing normally setose; marginal cell of fore wing distinctly wider than vein SR1 (Figs 49, 79); first subdiscal cell of fore wing closed apically and posterior half of vein CU1b sclerotized (Figs 49, 65, 79); propodeum anteriorly with medio-longitudinal carina (Figs 51, 71, 85); dorsal carinae of first tergite united subbasally (Fig. 52) to strongly converging (Figs 87, 93); first and second metasomal tergites movably joined (Figs 52, 83); second tergite of ♀ with a medio-basal area (Figs 52, 63, 87); setose part of ovipositor sheath 1.2–3.0 × as long as first tergite (Figs 48, 65, 83).

Distribution. Australian, Oriental and Afrotropical (2 genera: Tamdaona Belokobylskij, 1993, and Neognamptodon Belokobylskij, 1999).