Danzig, E.M., & Kozár, F. 1973 [A new species of soft scales, Physokermes inopinatus sp. n. (Homoptera, Coccoidea) from Hungary.]. Entomologicheskoe Obozrenye 52: 832-834.

Notes: Also published in English in Entomological Review 52: 532-533; Description; illustration; host; distribution.