Hadronotus avanus (Kozlov & Le) comb. nov.

Gryon avanum Kozlov & Lê, 1992: 231, 237 (original description, assigned to Gryon muscaeforme species group, keyed).

Gryon avanus Kozlov & Lê, 1996: 12 (description); Lê, 2000: 99, 103 (description, keyed, type information).