Stenamma westwoodi subsp. diecki Emery, 1895d: 300 (w.q.) CANADA (British Columbia), U.S.A. (Pennsylvania). Nearctic.

Primary type information: Primary type material: lectotype worker (by designation of Snelling, 1973c: 21 (in text)). Primary type locality: Canada: British Columbia, Yale (G. Dieck) (invalid restriction of type locality by Creighton, 1950a: 136; no lectotype designated) Primary type depository: MCZC (lectotype). Secondary type information: Secondary type material: 1 paralectotype worker. Type localities: Canada: British Columbia, Yale (G. Dieck) (invalid restriction of type locality by Creighton, 1950a: 136; no lectotype designated), 2 workers U.S.A.: Pennsylvania, Beatty (T. Pergande). Secondary type depositories: MCZC (designated paralectotype), MSNG, USNM. Type notes: 1) Original description has syntype workers, syntype queens (numbers not stated). 2) Snelling, 1973c: 21 (in text), does not state the localities of the lectotype and paralectotype, but from the lectotype label information provided it is evident that it is from the British Columbia locality.