1 14 BEITISH APHIDES. 



Apterous viviparous female. 



Incli. Millimetres. 



Size of body 0-080 X 0*040 2-02 X 1-01. 



Length of antennse 0-017 0-43. 



Long oval, golden yellow. Head with two dusky 

 spots on occiput. Antennae five-jointed, the fourth 

 the longest. Abdomen naked or but slightly clothed 

 with cottony fibre, and furnished with small marginal 

 punctures. Nectaries none. Rostrum reaches to the 

 hind coxa. Eyes conspicuous and brown. Antennge, 

 back of the head, and legs fuscous. 



Fupa. 



Long oval, yellow. Head, antennse, and wing- 

 cases fuscous. Abdominal hind rings furnished with 

 numerous tufts of stiff fibre like spun glass, each tuft 

 issues from a distinct glandular opening placed not 

 at the sutures but in the midst of the body-ring. 



Winged viviimrous female. 



Inch. Millimetres. 



Expanse of wings 0*220 5-58. 



Size of body 0-080 XO'OSO 2-02x0-76. 



Length of antenna 0-030 0*76. 



Head and thorax black. Antennse six-jointed, not 

 counting the nail. The third joint the longest, which, 

 w^ith the following joint, is slightly ringed. Abdomen 

 naked, fuscous, or dirty green ; nectaries none or im- 

 perceptible. Eyes brown. Antennse and legs fuscous. 

 Wings with greyish membranes, slightly punctured ; 

 stigma fuscous, with darkish stripes at their apices ; 

 cubitus, other veins and insertions, dark brown. In the 

 hind wings the two oblique veins form with the costal 

 nerve a tridental fork. 



The Queen Aphis (fundatrix) is large, pale lilac, 

 with green spots, indicating the embryos. Head, legs, 

 and antennse very small ; whilst the abdomen is very 

 arge. Antennse restricted to four joints. 



