Mr. F. Walker's Descriptions of Aphides. 427 



are pale yellow ; the feet are brown : the rudiments of the wings 

 are yellowish white. In the winged insect the disc of the chest 

 and that of the breast are streaked with brown : the feelers are 

 pale yellow ; the tips of the joints are brown : the nectaries are 

 black : the wing-ribs and the rib- veins are pale yellow. 



Variations in the wing-veins. — 1st. The lower branch of the 

 iirst fork is forked again at its tip. 2nd. The lower branch of 

 the first fork is very short ; the upper branch passes to the wing- 

 border_, but has no second fork. 



The oviparous wingless female. The body is pale bright yellow, 

 ovalj convex and shining : the head is buff : the feelers are yellow, 

 and much longer than the body ; the tips of their joints are black : 

 the eyes are dark red : the mouth is pale yellow with a black 

 tip : the nectaries are yellow, darker at the base, and as long as 

 one-fourth of the body ; their tips are black : the legs are pale 

 yellow ; the knees are brown ; the feet and the tips of the shanks 

 are black. 



1st var. Green : the feelers are black towards the tips and 

 nearly as long as the body : the nectaries are nearly as long as 

 one-hfth of the body : the knees are black. 



2nd var. The body is yellowish green : the feelers are black, 

 yellow at the base. 



3rd var. The body is greenish yellow : the head is pale red : 

 the eyes are black : the nectaries are dark yellow with black tips, 

 and more than one-fifth of the length of the body. 



4th var. The body is white with a very slight yellow tinge : 

 the feelers are black, white towards the base, and longer than 

 the body. 



The winged male. This pairs with the oviparous female in the 

 early part of November : it is brown : the fore-border, the hind- 

 border, and the underside of the fore-chest are dark yellow : 

 the feelers are black, and much longer than the body ; the mouth 

 is pale yellow with a black tip : the nectaries are black, and about 

 one-fourth of the length of the body : the legs are yellow ; the 

 feet, the tips of the thighs and of the shanks, and the hind-thighs 

 from the middle to the tips are black : the wings are very much 

 longer than the l)ody ; the wing-ribs are pale yellow ; the brands 

 and the veins are brown. 



1st var. The body is black : the fore-border and the hind-bor- 

 der of the fore-chest, the fore-breast, and the abdomen are red : 

 the feelers are black, and much longer than the body : the nec- 

 taries are black. 



51. Aphis Urticce, Schrank. 



Aphis Urtica, Schrank, Faun. Boic. 106. 1186; Kalt. Mon. 

 Pflan. i. 13. 4. 



Urticifex, Amyot, Ann. Soc. Ent. 2"^^ ^^y.{^.^ y^ 475 _ 



