PTBROCALLIS TILI^. 35 



Winged viviparous female. 



Incli. Millimetres. 



Expanse of wings 0-280 7*10. 



Size of body O'lOO X 0-025 2-54 X 0-62. 



Length of antennse 0*080 2-02. 



„ cornicles 0-002 0-05. 



Bright yellow. Two fine waving black lines run 

 behind the eyes, which are continued down each side 

 of the prothorax. Two irregular lines mark the tho- 

 racic lobes. Five black dots occur on each side of the 

 dorsum. AntennsB yellow, with black rings. Tarsi 

 and hind femora black. Geneto-anal plates conspi- 

 cuous. Wings ample ; insertions, cubitus, and stig- 

 mata dark grey. Other veins grey, and broadly 

 clouded at their apices. The stigma, which is large, 

 has a dark stain at its inner margin. The rostrum is 

 very short, and hardly exceeds the length of the head. 



Pupa. 



Rich lemon-yellow, sometimes pale green. Wing- 

 cases greenish. Antennae as long as the body. 



» 



Winged male. 



Inch. Millimetres. 



Expanse of wings 0*260 6*62. 



Size of body 0*050 X 0-030 1-27 X 0*76. 



Length of antennae 0-090 2*27. 



Body small in proportion to the voluminous wings. 

 Not unlike the female in colour. Head streaked with 

 black. Antennae very long and ringed ; the third 

 joint much tuberculate. Eyes bright red ; stemmata 

 prominent and green. Dorsum with two rows of 

 black spots. Wings prettily clouded with grey. 

 Appears in September and October. 



Walker states that this Aphis, like some others, has 

 a supplementary wingless male. He describes the 

 oviparous females as yellow, flat, and hairy, with broad 



