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



men is traversed by bands like those of the wingless female : 

 the feelers are as long as or a little longer than the body ; the 

 tips of their joints, and sometimes the whole of them excepting 

 the base, are black : the eyes, the tip of the mouth, the tips of the 

 nectaries, the feet, and the hind-thighs from the middle to the 

 base, and sometimes the whole of them, are black ; there is also 

 a black ring round each middle thigh : the wings are colourless; 

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

 are colourless ; the first branch-vein is strongly marked ; the 

 fourth is more or less wanting ; the tips of the veins are slightly 

 shaded. 



The body is rather short and broad ; the middle of the front 

 of the head is prominent and armed with bristles : the first joint 

 of the feelers has a black spot on its inner side ; the fourth joint 

 is very much shorter than the third ; the fifth is as long as the 

 fourth ; the sixth is full half the length of the fifth ; the seventh 

 is shorter than the sixth : the sides of the fore-chest are convex 

 and slightly notched : the legs are moderately long ; the fore-legs 

 are much shorter than the hind-legs : the main wing-vein is 

 slightly curved inwards and outwards, and is somewhat clouded 

 on the inner side at its tip, but does not form a distinct brand ; 

 the first branch-vein is nearly perpendicular ; the second and the 

 third are strongly marked towards the base ; the latter is very 

 distinct till close to its source, and sends forth its forks at one- 

 third and at two-thirds of its length ; these forks are very slen- 

 der, and, as in other species of this group, they are much di- 

 verging from each other. 



1st variety. The abdomen is not traversed by bands. 



2nd variety. The head and the chest are almost black. 



3rd variety. The sutures of the chest are yellow. 



4th variety. The head is black : the disc of the chest is brown. 



5th variety. The whole of the hind-thighs is black. 



6th variety. The tips of the middle thighs are brown or black. 



The main wing does not form an angle but a curve beneath 

 the place of the brand ; the third vein is sometimes forked after 

 one-third, and again after two-thirds of its length : all the veins 

 have the same thickness when the wings are just unfolded. 



The oviparous wingless female. This occurs in October and con- 

 tinues till the end of November : it is pale yellow varied with 

 green : the feelers are black about the middle, and more than 

 half the length of the body : the tips of the feet are also black : 

 the tip of the abdomen is lengthened : the hind-shanks are dilated. 



1st variety. Pale yellow varied with bright yellow. 



2nd variety. Pale yellow varied with orange. 



3rd variety. Pale greenish yellow, with a lively irregular green 

 stripe on each side. 



