. Circulaire. Les insectes nuisibles ; les insectes nuisibles. L'APHIS APPLE KOSY. {Aj>hls iJKillfoIix Fitch.) l'Aphis rose du pommier (fig-. H), considéré par comme un Pergande2-)son rnali- follm Fitch, et déterminé par l'Aphis Sanderson, sorhl readih Kaltenbach, est distingué des f roni le précédent par sa taille plus grande, plus rond ca}', et généralement de couleur rose, qui, cependant, peut varier du saumon à tan ou même de gris ardoise ou noir, le corps étant recouvert d'un pulverulence blanchâtre. Cette espèce est très généralement distribué aux États-Unis, se produisant dans de tels États largement séparés comme Illi- nois, New York,

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. Circular. Insect pests; Insect pests. THE KOSY APPLE APHIS. {Aj>hls iJKillfoIix Fitch.) The rosy apple aphis (fig-. H), regarded by Pergande as A2-)his rnali- follm Fitch, and determined by Sanderson as Aphis sorhl Kaltenbach, is readih' distinguished f roni the preceding by its larger size, rounder bod}', and usually rosy color, which, however, may vary from salmon to tan or even to slaty gray or black, the body being covered with a whitish pulverulence. This species is very generally distributed in the United States, occurring in such widely separated States as Illi- nois, Connecticut, New Jersey, Virginia, Washington, California, South Carolina, and West Virginia; it occurs also in Canada. The species is common on apple, but has been taken by Sanderson on pear.. Fig. 6.—Rosy apple aphis (Aphis malifoliR'): a, winged agamic form; 6, pupa: c, wingless agamic form; d. recently born aphis. All greatly enlarged (original). In Europe the food plants of Aphis sorhi^ in addition to apple, are t'rataiguso.vyacantha^ Soi'husduciqxiria^ S. d()///e.stir<(, 'dnd S. torminaUs. LIFE mSTOKV. The life history of this species is but imperfectly known. Winter eggs are deposited in the autumn by sexual females, and more often on the trunk and larger limbs than with the other species mentioned. They hatch in spring as the a})ple leaves are pushing out, and the young aphides infest the 3'onng leaves and later the tender shoots and foliage, the latter thus becoming usually badly curled. Three generations from the egg are said to occur on the apple in the spring, many individuals of the second and third generations developing wings and migrating to other trees and to other host plants. After tiie third generation the apple is deserted by the insects until fall, when the return migrants appear and give rise to the true sexual forms, the females depositing eggs as described. [Cir.Sl]. Please note that these images are extracted from scanned page images that may have been digitall

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