INJURIOUS AND BENEFICIAL INSECTS OP CALIFORNIA. 



95 



Natural Enemies. — The bean aphis is heavily parasitized by braconids 

 and preyed upon by the larva? of Scymnus sorclidus Horn. 



Fig. 75. — The bean aphis, Aphis rumicis Linn. Winged and apterous females with 

 enlarged antennre of the same. Greatly enlarged. (Author's illustration. P. C. Jr. 

 Ent.) 



THE ROSY APPLE APHIS 62 



Aphis sorhi Kaltenbach 

 (Aphis pyri Boyer) 

 (Aphis malifoliw Fitch) 

 (Figs. 76, 77) 



Description. — This insect gets its common name from its rosy or 

 purplish color, which readily distinguishes it from the green apple 

 aphis. The head and thorax of the winged forms are dark. The 

 bodies of all are slightly covered with white powder which often 

 gives them a grayish cast. The eggs are oval and shiny black. 



Fig. 76. — The rosy apple aphis, Aphis sorbi Kalt. Winged and apterous 

 females on an apple leaf. Enlarged three times. (Original) 



02 This is also sometimes called the purple apple aphis 



