12 BBITISH APHIDES. 



Family —APHIDIDiE . 



Tribe-APHIDINiE. 



Genus XYI.— CALLIPTERUS,* Koch. 



ZlEELAUS. FaIRWING. GaY-LOUSE. 



Hostrum stout, sliort ; does not reach to the second 

 cox9e. 



AntennaB very long, often tipped with black ; third 

 joint much the longest. Seventh joint variable in 

 length, but rarely less than the sixth. In the winged 

 females sometimes it attains to twice the length of the 

 sixth. 



Head large, vertex flat. Frontal tubercles none. 



Cornicles very short. 



Legs moderately long ; longest in the males. 



Wings generally ample, iridescent, usually clouded 

 with pigment at the extremities of the veins. Stig- 

 mata long. Stigmatic cells trapezoidal. 



Abdomen : in some species the apterous females 

 are hirsute. The last abdominal ring is provided with 

 two anal valves or papillae. 



In the above description I assume that Gallipterus 

 possesses seven antennal joints, which some of the 

 species ranged by Koch under his genus do not possess. 



Passerini, on the other hand, restricts this genus to 

 the two walnut-feeding Aphides, and groups it under 

 the Lachnince.i 



The genus Galliptenis, as its name imports, includes 

 some of the most elegant forms of the Aphidinse. 

 From their bright and lively colouring, they have 



* From KaWos, beautiful ; irrfpov, a wing, 

 t ' Aphididee Italicse.' p. QQ. 



