Hadronotus nigriclavatus (Dodd) comb. rev.

Hadronotus nigriclavatus Dodd, 1913a: 178 (original description); Dodd, 1915: 19 (keyed); Kieffer, 1926: 455, 470 (description, keyed).

Gryon nigriclavatus (Dodd): Galloway, 1976: 92 (type information, generic transfer).

Gryon nigriclavatum (Dodd): Mineo, 1990b: 57 (description, type information); Johnson, 1992: 391 (cataloged, type information); Mineo, 1992: 17 (assignment to Gryon letus species group).