Key to Females of the Genera of Brachycistidinae 1 Hindcoxa with longitudinal carina on inner margin (Fig. 2); occipital carina ventrolaterally angulate (Fig. 1) ................................................................... Colocistis Krombein Hindcoxa without longitudinal carina on inner margin; occipital carina ventrolaterally evenly curved................................................................................................................ 2 2 Scape apicolaterally lobed (Fig. 11); occipital and hypostomal carinae widely separated, separation as long or longer than length of hypostomal fossa; occipital carina obsolescent ventrally .................................................. Stilbopogon Mickel & Krombein Scape cylindrical, not apicolaterally lobed (Fig. 12); occipital and hypostomal carinae usually separated by less than length of hypostomal fossa; occipital carina complete ventrally....................................................................................................................... 43 3 Mandible with inner margin below largest laterally projecting subapical tooth serrate or with three or more small teeth (Fig. 6) ........................................... Brachycistis Fox Mandible with inner margin below largest laterally projecting subapical tooth smooth, without serrations or small teeth (Figs. 7, 9, 10)........................................................... 4 4 Mesopleuron strongly convex medially in dorsal view (Fig. 3); maxillary palpus about as long as hypostomal fossa .........................................Glyptacros Mickel & Krombein Mesopleuron nearly flat or slightly concave medially in dorsal view (Fig. 4); maxillary palpus minute, considerably shorter than hypostomal fossa............................. Genus APublished as part of Kimsey, Lynn S., 2006, Competing Taxonomies: Reexamination of the femalebased genera of Brachycistidinae (Hymenoptera: Tiphiidae), pp. 21-34 in Zootaxa 1211 on pages 32-33, DOI: 10.5281/zenodo.17248