Miyanoshita, A., Kawai, S., & Fujii, K. 1993 Host-associated differences in Aspidiotus cryptomeriae Kuwana (Homoptera: Coccoidea: Diaspididae) I. Adult morphology and host preference.. Applied Entomology and Zoology 28(1): 71-80.

Notes: Abstract: Morphological differences and host preference in two forms of A. cryptomeriae associated with Cryptomeria japonica and Torreya nucifera; adult males and females showed statistically significant differences in some characters; however, it was impossible to divide specimens perfectly by using any one of these characters; linear discriminant analysis using combinations of several characters successfully discriminated them; present study suggests strongly that these two forms are distinct host races.