Hadronotus dichromos (Galloway) comb. nov.

Plastogryon bicolo r Dodd, 1913b: 171 (original description. Preoccupied by Hadronotus bicolor Ashmead (1894)); Dodd, 1915: 24 (keyed).

Plastogryon (Heterogryon) bicolor (Dodd): Kieffer, 1926: 447, 451 (description, subgeneric assignment, keyed).

Gryon bicolor (Dodd): Galloway, 1976: 91 (type information, generic transfer).

Gryon dichromos Galloway: Galloway & Austin, 1984: 79 (replacement name); Mineo, 1990a: 186 (description of male); Mineo, 1991: 7 (assigned to Gryon charon species group); Johnson, 1992: 381 (cataloged, type information).