10 BRITISH APHIDES. 



bundles, within wliicli the insects nestle by thousands. 

 Often the entire crop of this fruit in a garden is ruined 

 by the bhghting influence of the above Aphis. 



The pupa is green, and does not greatly differ in 

 form from the larva. 



Winged viviparous female. 



Inch. Millimeters. 



Expanse of wings 0*260 6*62. 



Size of body 0-080 X 0'030 2-02 X 076. 



Length of antennjB 0-090 2-27. 



„ cornicles O'OIS 0-38. 



Yellow or yellowish green. Head, thorax, band on 

 prothorax, antennse, knees, and tarsi black. Abdo- 

 men bright green, with three or more dark green 

 patches on the dorsum, and several spots on the sides. 

 Cornicles yellow, attenuated at their necks, and much 

 dilated in their midst. Legs ochreous, with dark 

 femoral and tibial joints. Third antennal joint tuber- 

 culate. Wing-insertions yellow. 



This insect also infests the red currant, Bibes rubrum, 

 and the gooseberry, B. grossularia. I have taken it also 

 feeding on the nipplewort, Lapsana vulgaris, and the 

 guelder-rose, Viburnum opulus. The winged fly appears 

 as early as May. This Aphis is not to be confounded 

 with Myzus ribls, which unfortunately has the same 

 specific name. 



Rhopalosiphum lactuc^, Kalf. Plate XL. 



Aphis lactucce, Kalt., Walk. ? 

 Bhopalosiphum lactucce, Pass. 



Ajiterous viviparous fem^ale. 



Incli. Millimeters. 



Size of body 0-075 X 0-035 1-89 X 0-88. 



Length of antennee 0*065 1-64. 



cornicles 0*015 0*38. 



