Takagi, M. 1991 Host stage selection in Aphytis yanonensis DeBach et Rosen and Coccobius fulvus (Compere et Annecke) (Hymenoptera: Aphelinidae), introduced parasitoids of Unaspis yanonensis (Kuwana) (Homoptera: Diaspididae).. Applied Entomology and Zoology 26(4): 505-513.

Notes: Abstract: Results indicate that the vulnerable stage of U. yanonensis is more restrictive to A. yanonensis than to C. fulvus; immature adult of U. yanonensis represents the only suitable host stage for oviposition by A. yanonensis, whereas C. fulvus exploits the entire adult stage. Keywords: biological control.