Mineo 1979. Studies on the Scelionidae (Hym. Proctotrupoidea) 9. Material for a revision of the genus Gryon Hal., with description of 4 new species (G. austrafricanum, G. eremiogryon, G. laraichii, G. nicolai) and notes on other scelionids. Bollettino del Laboratorio di Entomologia Agraria Filippo Silvestri, 36 1979: 234-265