Thong, C. H. S., and J. M. Webster. 1975a. Effects of Contortylenchus reversus (Nematoda: Sphaerulariidae) on hemolymph composition and oocyte development in the beetle Dendroctonus pseudotsugae (Coleoptera: Scolytidae) . Journal of Invertebrate Pathology 26:91-98.