Shoubu, M., & Kawai, S. 2002 Taxonomic position of Chionaspis miyakoensis (Homoptera: Coccoidea: Diaspididae).. Esakia (42): 151-160.

Notes: Chionaspis miyakoensis Kuwana 1931 was synonymized with Pseudaulacaspis cockerelli (Cooley, 1897) in Takagi (1970). However, our morphological study of their second instar males revealed that they are clearly distinguishable from each other in the males, in spite of their resemblance in the adult females. We redescribe the adult female and, for the first time, the second instar male of C. miyakoensis, and raise it to the species level again as Pseudaulacaspis miyakoensis.