Formica rasilis Wheeler, 1903 junior synonym of current valid taxon Formica densiventris Viereck, 1903
Formica microgyna var. rasilis Wheeler, 1903g: 648 (w.q.m.) U.S.A. (Colorado). Nearctic.
Primary type information: Primary type material: syntype workers, syntype queens, syntype males (numbers not stated). Primary type locality: U.S.A.: Colorado, Manitou, 11.vii.-21.viii.(1903?) (W.M. Wheeler) (by restriction of Wheeler, 1913i: 469). Primary type depositories: AMNH, LACM, MCZC. Type notes: 1) In the original description Wheeler cites 3 localities “in the neighborhood of Manitou”: Red Rock Cañon, Williams Cañon, and Ute Pass. 2) Other original syntype localities: Colorado, between Broadmoor and Cheyenne Cañon (W.M. Wheeler), Colorado, Pike’s Peak (W.M. Wheeler).
Obsolete combinations
Citations

Extant: 0 valid subspecies (1 synonym)