INFLUENCE OF 4 APHID PREY SPECIES ON DEVELOPMENT, SURVIVAL, AND ADULTSIZE OF CYCLONEDA-ANCORALIS

The effects of aphid prey species on immature development and survival of Cycloneda ancoralis (Germar) were studied. Cycloneda ancoralis lar vae fed Aphis gossypii Glover and Aphis helianthi (Monell) had longer developmental times than those fed Diuraphis noxia (Mordvilko) or Lypa phis erysimi (Kaltenbach). Development times did not differ significan tly between sexes. Percent survival from egg hatch to adult eclosion d id not differ significantly among larvae fed different aphids. The wei ght of newly eclosed adults differed significantly among C ancoralis f ed different aphids and also differed between sexes; females weighed m ore than males. Individuals fed A. gossypii weighed least, while those fed L erysimi weighed most. The total number of aphids eaten by C anc oralis larvae differed significantly among individuals fed different a phid species. Larvae fed A. gossypii consumed more aphids than larvae fed other aphid species. Larvae fed D. noxia consumed the fewest aphid s.