Mr. F. Walker's Desoiptions 0/ Aphides. 47 



58. Aphis Hieracii, Schrank. 



Aphis Hieracii, Schrank, Faun. Boic. ii, 121. 1233; Kalt. Mon. 

 Pflan. i. 17. 7. 



The following plants are the food of this species : Hieracium 

 sylvaticum, H. sylvestre, H. murorum, H. Pilosella, H. Sphondy- 

 lium, Crepis tectorum, and other species, Carduus, Arctium Lappa, 

 Ballota nigra, Cichorium Intyhus, C. Endivia. 



The viviparous wingless female. When young it is yellow, 

 elliptical, shining, and covered with short hairs : the feelers are 

 black, pale yellow at the base, and longer than the body : the 

 eyes are dark red : the mouth is pale yellow ; its tip is black : the 

 nectaries are dull yellow, and as long as one-sixth of the body ; 

 their tips are black : the legs are dull yellow, and moderately 

 long ; the feet and the tips of the shanks are black. 



1st var. Pale red. 



2nd var. Tinged with green : the feelers are shorter than the 

 body. 



3rd var. Feelers yellow ; tips of the joints black. 



When full-grown it is oval, slightly convex, smooth and 

 shining, pale green, or pale reddish green, or reddish yellow : the 

 feelers are very pale green or dull yellow with black tips, and a 

 little longer than the body : the eyes are black : the mouth and 

 the nectaries are pale yellow, or very pale green, with black tips ; 

 sometimes the latter are black excepting the base which is pale 

 green ; they are nearly as long as one-fourth of the body : the 

 legs are pale yellow or very pale green ; the feet and the tips of 

 the shanks, and sometimes also the tips of the thighs, are black. 



1 st var. Bright yellow : the limbs are pale yellow ; the tips of 

 their joints and the nectaries are black. 



The viviparous winged female. The pupa is grass-green, rather 

 long and narrow : the feelers are black, green towards the base 

 in the young ones, and a very little longer than the body : the 

 mouth is dull green, and reaches near to the base of the hind-legs ; 

 its tip and the eyes are black : the nectaries are black and about 

 one-sixth of the length of the body : the legs are dull green ; the 

 thighs are pale yellow towards the base ; the feet and the tips of 

 the thighs and of the shanks are black : the rudimentary wings 

 are green : sometimes it is pale green, and its limbs are still 

 paler : when full-grown the legs are black ; the base of the 

 thighs and the shanks except their tips are yellow. 



When the wings are unfolded it is black and shining : the 

 abdomen is dark green : the feelers are slender and much longer 

 than the body : the mouth is pale yellow ; its tip is brown : the 

 nectaries are black, and nearly one-fourth of the length of the 

 body : the legs are long and pale yellow ; the thighs, except the 

 base, the feet, and the tips of the shanks, are black : the wings 



