Moses, M.J., & Wilson, M.H. 1970 Spermiogenesis in an iceryine coccid, Steatococcus tuberculatus Morrison.. Chromosoma. Berlin 30: 373-429.

Notes: The spermatozoan of Steatococcus is a motile filament containing a core of two chromosomes arranged in tandem and surrounded by more than 80 microtubules in 2-1/2 concentric rings. Two sperm develop from each binucleate spermatid in the form of long papillae. A detailed description of this process is given.