Tiensuu, L. 1924a Part I. Taxonomic studies. [The parasites of Pseudococcus maritimus (Ehrhorn) in California.]. University of California Publications in Entomology, Technical Bulletins, Entomology 3(2): 223-251.

Notes: Nine species of chalcid-flies are described, with illustrations. Other host species mentioned include Eulecanium corni, Physokermes insignicola, Pseudococcus adenostomae, P. jessica, Pulvinaria bigeloviae and Saissetia oleae.