The occurrence and effect of a protozoan parasite, Ophryocystis elektroscirrha (Neogregarinida: Ophryocystidae) on overwintering monarch butterflies, Danaus plexippus (Lepidoptera: Danaidae) from two California wintering sites. Ecol. Entomol (1992)

by K L H Leong, H K Kaya, M A Yoshimura, D Frey