132 CHERRY. LEAVES — CHERRY PLAKT-LODSE. 



half way to the tip and are dusky at least at their ends; the neck and lower fide of 

 the head are green; the antennae are two thirds «( the length of the body, dusky, 

 and in joung individuals green at their bases; the beak is short, pale green, its apex 

 blackish; the legs are dull white, the feet and four hind thighs except at their base, 

 Wackish; the wings are pellucid, the stigma salt white margined with dii.-ky, more 

 widely so on its inner side, the veins black, the rib-vein whitej the second folk very 

 short. 



The wingless females are 0.08 long, egg-shaped, pale yellowish- green, their abdo- 

 mens coated wiih a white meal-like powder excppt at the sutures and on the medial 

 line, which last is deeper green, and the legs and antennae dull white. 



The larva when young are pea green with white antennje, nectaries and 'egs. 

 When older a deeper green strit>e appears along the middle of the back and a row of 

 deeper green spots each side which are more or less confluent into stripes. 



The aphis upon our garden cherry is the species which is named 

 ^phis (krasi by Fabric! us. It undoubtedly has been introduced 

 upon this side of the Atlantic with the tree which it Infests. M. 

 Fonscolomb (Annals Ent, Soc. x. 173), speaking of this fpecies 

 in the southern part of France, says it occurs the last of July, 

 and tliat he has never met with any winged individuals. This 

 wouM indicate the species to be much more rare than it is with 

 us. Here from the middle. of Mav till the last of September it is 

 the most common of any species of this family. For years w hen 

 I have wished to investigate any fact in conuectian with the 

 aphides I have turned to this species, always finding it at hand, 

 and always with two or three winged individuals upon every leaf, 

 in company with larvae, pupae and wiugless females. 



The LARV.S when newly born are about 0.03 long, of a dull white or pale yellow 

 color, with transparent ai d colorless legs and anteniEe They are of an oblong oval 

 form, with the opposite sides of their bodies parallel and tBeir nectaries shorter than 

 to the tip and transparent or slightly dusky. As they become larger they are broader 

 across the abdomen and deeper yellow, the tips of the antennae and the feet dusky 

 and the nectaries black. After casting their skins they are dull reddish brown or 

 chestnut colored with black heads, and are much broader across the abdomen, being 

 now shaped like an egg and measuring 0.05 in length. Their legs, anteuLae and nec- 

 taries are whitish trai sparent, the last equalling the tip. Others of this same size 

 and form have the thighs, feet, nectaries and tips of the antenrise dusky. 



The wingless females are 0.05 long, with very phimp broad egg-shaped bodies, 

 which are black and shining, with a slightly prejecting tail, the nectaries equalling or 

 even surpassing its tip and of a black colur, the antennae horter than the body 

 and whitish, their two short basal joints and the apical half black ; the beak whitish 

 with a black tip; the legs white with the feet, tips of the shanks, and coromouUy the 



