Key points are not available for this paper at this time.
Twelve previously described species of Columbicola are recognized and redescribed. The species Columbicola extinctus Malcomson, previously recognized only from the extinct passenger pigeon, Ectopistes migratorius (L.), is "brought back" from extinction by showing it to be conspecic with lice from the extant band-tailed pigeon, Columba fasciata Say. Five new species are described: drowni type host Metriopelia melanoptera (Molina), altamimiae type host Metriopelia aymara (Prevost), adamsi (type host Columba speciosa Gmelin), waggermani (type host Columba squamosa Bonnaterre), and waltheri type host Geotrygon linearis (Prevost). Columbicola triangularis Eichler and Columbicola gymnopeliae Eichler are removed from synonymy and recognized as valid species. Columbicola pseudolipeurusque Eichler is considered a junior synonym of Columbicola passerinae (Wilson) rather than of Columbicola macrourae (Wilson). We remark on informal groupings of the species and provide a key for the identication of the 17 species recognized in this article.
Clayton et al. (Wed,) studied this question.