Coloradoa artemisiae ssp. artemisicola Takahashi 1965 = Coloradoa campestrella Ossiannilsson 1959

Takahashi, describing artemisicola as a subspecies of C. artemisiae in Japan, noted that it was close to C. campestrella but distiguished it by “ultimate rostral segment distinctly longer (1.2–1.3 times) second segment of hind tarsus”. The range for this ratio in European apterae of campestrella is 1.1–1.3, and no other distinguishing features could be found. C. campestrella is therefore a species that feeds on numerous Artemisia spp., with a range extending from Europe across Asia to Pakistan, China, Korea and Japan.