Pseudips Cognato, 2000 species are distributed in the western mountains of China and in western North America where they feed and complete their life cycle under the bark of spruce and pine trees (Pinaceae: Picea and Pinus spp.). The phylogenetic relationships of the three previously recognized species are as follows: Pseudips orientalis (Wood and Yin, 1986) is sister to a monophyletic group consisting of Pseudips concinnus (Mannerheim, 1852) and Pseudips mexicanus (Hopkins, 1905). Morphological variation has been observed among some populations which has challenged species boundaries. We conducted a review of morphological characters and reconstructed a DNA-based phylogeny of individuals from multiple, widely disjunct locations to test the limits of the three species. A mostly resolved DNA-based phylogeny demonstrated reciprocal monophyly for Canadian/US and Mexican populations, no overlap of inter- and intraspecific pairwise COI DNA sequence differences, and corroborated diagnostic morphological characters. In addition, >10% COI DNA sequence difference as well as diagnostic morphological characters were observed between P. orientalis individuals from Tibet and Qinghai, China. As a result, Pseudips radiatae (Hopkins, 1915), status restored is resurrected from synonymy with P. mexicanus and Pseudips yak Cognato and Smith, new species is described. Potential prehistoric environmental scenarios contributing to Pseudips speciation are discussed.