Perilampus Latreille, 1809

Figs 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18

Perilampus Latreille, 1809: 30. Type species: Cynips italica Fabricius, 1793; by subsequent designation of Westwood (1839: 67).

Diagnosis.

Face without a horn. Scrobes laterally not carinate (European species) (e.g., Figs 2A, 3A, 6A, 10A, 12A, 14A). Head mostly without longitudinal striae (or these confined to upper face), sometimes with more or less distinct frontal keels (e.g., Figs 2A-C, 3B, 11B, 16B). Pronotum without elevations (e.g., Figs 2C, 4C, 7C, 10C). Prepectus variable but considerably longer than at least half the adjacent pronotal collar (e.g., Figs 2D, 4D, 8D, 11D, 14D, 18D). Scutellum at most slightly produced over propodeum, its posterior margin sometimes with protruding bilobed process (e.g., Figs 2C, 8C, 14C); marginal vein longer than postmarginal vein; petiole inconspicuous, sometimes with dorsal scale; ovipositor sheaths straight, not projecting, hidden under apical tergites.