Mr. F. Walker's Descriptions of Aphides. 43 



1st var. The body is red. ^■'k>:?^iv 



2nd var. The body is Ulac. 



3rd var. The body is blackish. 



The viviparous winged female. Unfolds its wings in the mid- 

 dle of May : it is black and rather stout : the abdomen is dark 

 green with a row of black spots on each side : the feelers are 

 rather thick, and a little shorter than the body : the first and the 

 second joints are slightly angular on the inner side of their tips ; 

 the fourth joint is but little more than half the length of the 

 third; the hfth is a little shorter than the fourth; the sixth is 

 about half the length of the fifth ; the seventh is as long as the 

 fifth : the tip of the mouth and the nectaries are black, and the 

 latter are as long as one-fourth of the body : the legs are long ; 

 the thighs are yellow towards the base : the wings are colourless, 

 and nearly twice the length of the body ; the wing- ribs and the 

 rib-veins are pale yellow; the wing-brands and the veins are 

 brown ; the second vein diverges much more from the first than it 

 does from the third vein ; the forks of the latter usually have 

 their respective sources at one-third and at two- thirds of the 

 length ; the fourth vein is much curved near its beginning, but 

 nearly straight in the latter part of its course ; the angle whence 

 it springs is slight. 



Length of the body | line ; of the wings 2^ lines. 



68. Aphis Cerasi, Fabr. 



Aphis Cerasi, Fabr. Ent. Syst. iv. 211. 6; Syst. Rhyn. 295. 6; 

 Kalt. Mon. Pflan. i. 45. 31. 



Cerasaphis, Amyot, Ann. Soc. Ent. Fr. 2°^^ serie, v. 477. 



It feeds on the wild and on the cultivated Cerasus Avius from 

 April till November, and its large swarms on the shoots of this 

 tree are sometimes injurious to the fruit ; it occasionally dwells on 

 the peach, and its colour is then rather paler, especially towards 

 the head. 



The viviparous wingless female. The eggs are hatched in April, 

 and the young Aphides are red or reddish brown, but as they 

 grow they acquire a darker colour, and are convex, plump, and 

 shining, and have a brassy tint on the back : the limbs are brown : 

 the feelers are black at the base, and about one-third of the 

 length of the body : the eyes are dark brown : the suckers of the 

 mouth are red, and can be thrust out to some distance : the legs 

 are rather short and thick. When full-grown it is coal-black : 

 the body is exceedingly plump and nearly round ; the punctures 

 on each side are very distinct : the feelers are yellow towards the 

 base, and nearly as long as the body : the nectaries are straight, 

 and as long as one-sixth of the body, and have sometimes pale 

 tips : the thighs at the base and the shanks except theif tips are 



