1. Mesoscutum with medial longitudinal furrow with cross-carinae (a, b) mimicking the adjacent notauli … Acanthaegilopsis

- Mesoscutum without medial longitudinal furrow (A, B) … 2

2. Petiole shiny, often very long (a). Mesopleuron with a band of heavy sculpture (b). Scutellum short, rounded (c) … Anacharis

— Petiole sculptured, relatively short (A, B). Mesopleuron at most with striations, without a band of heavy sculpture (A, B). Scutellum produced into a spine, which may be blunt (C) … 3

3. Scutellum protruding posteriorly, overhanging propodeum, sometimes as a spine, with similar reticulate-foveolate sculpture over entire dorsal surface (a). Head transverse, distinctly wider than mesosoma (b) … Xyalaspis

— Scutellum usually not overhanging propodeum, never as a distinct spine, smooth or more or less rugose, never rough reticulate (A); typically a circumscutellar carina can be traced around the dorsal circumference of the scutellum. Head rounded, only slightly wider than mesosoma (B) … Aegilips