Formica pensylvanica De Geer, 1773: 603, pl. 31, figs. 9, 10 (s.w.q.m.) U.S.A. (Pennsylvania). Nearctic.

Primary type information: Primary type material: syntype major and minor workers, syntype queens, syntype males (numbers not stated). Primary type locality: U.S.A.: Pennsylvania (Acrelius?). Primary type depository: MNHN. Type notes: According to Horn & Kahle, 1935: 52, De Geer’s material is in NHRS.

Infrasubspecies

• C. h. p. mahican Wheeler, 1910
• C. h. p. punctatissimus Emery, 1895