6 » Farmers’ Bulletin 1128. 
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. (Pl. I, C.) The young stem- 
FiG. 1.—The rosy aphis: “‘Aphis apples.’’ Note that the fruit has failed to thin out in the clusters. 
mothers when 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 (Pl. I, I) are dark and often appear almost black, 
owing to the black head and body and the large black patch upon 
