8 



FARMEES BULLETIN 804. 



The rosy apple aphis is easily distinguished from the other forms 

 inhabiting the apple by its color. This varies from light salmon 

 pink to deep purple or grayish black. The young stem-mothers when 



Fig. 3. — The rosy aphis : " Aphis apples." 

 to thin out in the clusters 



Note that the fruit has failed 

 (Original.) 



first hatched from the eggs are dark green, very similar in color to 

 the young stem-mothers of the green apple aphis. The winged forms 

 (fig. 2, e) are dark and often appear almost black, owing to the black 

 head and body and the large black patch upon the abdomen. This 



