Foldi, I., & Pearce, M.J. 1985 Fine structure of wax glands, wax morphology and function in the female scale insect, Pulvinaria regalis Canard (Hemiptera: Coccidae).. International Journal of Insect Morphology & Embryology 14: 259-271.

Notes: Detailed study; discusses wax glands associated with spiracles and stigmatic furrows, with sites of reproduction and with excretory site; other sites of wax occurrence.