ONYCHOGONIA Brauer & Bergenstamm, 1889: 100 (also 1890: 32). Type species: Gonia interrupta Rondani, 1859 (= Gonia flaviceps Zetterstedt, 1838), by monotypy [Palearctic].
GONIOCNEPHALIA Townsend, 1915m: 222. Type species: Goniocnephalia melanica Townsend, 1915, by original designation.

fissiforceps (Tothill, 1924).– British Columbia and Alberta, south to California and Colorado (S&A, 1965).
– Gonia fissiforceps Tothill, 1924a: 207. Type data: holotype male (CNC). Type locality: Canada, British Columbia, Lillooet.

flaviceps (Zetterstedt, 1838).– Palearctic (Herting, 1984), Yukon, south to Oregon and Colorado, also Ontario (S&A, 1965), Alaska, Northwest Territories, California, British Columbia to Newfoundland (CNC).
– Gonia flaviceps Zetterstedt, 1838: 632. Type data: holotype male (MZLU). Type locality: Norway, Finnmark, between Alta and Kautokeino.
– Gonia albifrons Walker, 1849: 798. Type data: holotype male [not female as published] (BMNH). Type locality: Canada, Ontario, Hudson Bay, Albany River, Marten Falls [near Ogoki] (published as St. Martin's Falls).
– Gonia yukonensis Tothill, 1924a: 210. Type data: holotype male (CNC). Type locality: Canada, Yukon.

magna Brooks, 1944.– Washington to Montana, south to California and Colorado (S&A, 1965), British Columbia (CNC).
– Onychogonia magna Brooks, 1944a: 227. Type data: holotype male (CNC). Type locality: USA, Utah, Allen Canyon.

melanica (Townsend, 1915).– Wyoming, New Mexico (S&A, 1965).
– Goniocnephalia melanica Townsend, 1915m: 222. Type data: holotype male (USNM). Type locality: USA, New Mexico, Las Vegas Mountains, 11,000 feet.

tenuiforceps (Morrison, 1940).– Alaska, Alberta, Idaho, Labrador (S&A, 1965).
– Gonia tenuiforceps Morrison, 1940: 356. Type data: holotype male (CNC). Type locality: Canada, Labrador, Hopedale.