Stenus ( Nestus) brivioi Puthz, 1972

Stenus ( Nestus) brivioi Puthz, 1972c: 12.

Stenus brivioi – Puthz 1972b: 171 (note). — Puthz 1975a: 124.

Stenus (s. str.) brivioi – Campbell & Davies: 110.

Stenus vinnulus – Casey 1884: 112 (pars).

Material examined

CANADA: 1 ♂, Alberta, 5 km W. Ashmont Rte. 28A, Camas-lily marsh, 12 Jun. 1977, G.E. Ball leg. ( UASM); 1 ♂, Yukon Territory, Proctor’s Saw Mill, on Stewart River, 63°33’30”N 137°25’W, collected by treading grass tussocks 2’–8’ from shore of pond, 3 Jul. 1977, R.E. Morlan, J.V. Matthews, R.E. Roughley leg. ( Yukon Refugium Project) ( UASM).

Remarks

Terra typica: USA: Michigan, Maryglade College, E. of Memphis, Macomb Co; Paratype: Eagle Har., L.[ake] Sup.[erior]. Puthz (1972a) attributed paralectotypes of S. vinnulus Casey, 1884 (see below) from White Fish Point to S. brivioi as well, and also reported the latter for Quebec, Canada (1975). Campbell & Davies (1991), without citing material, reported S. brivioi for Alaska and most provinces of Canada (excluding British Columbia and Prince Edward Island).