HEMIPTERA. 



475 



(fig. 1045), A. dianthi in the larva state from a drawing kindly 

 made for me by Mr. Buckto'n (fig. 1046), and the A. rapes of Curtis 

 (fig. 1047 : No. 5 the winged insect, No. 7 the larva, and No. 8 natural 



FIG. 1046. Aphis dianthi, magnified. 



FIG. 1047. A. rapae and A. floris rapse (Curtis). 



size). I have also figured from Curtis the A. floris rapes (fig. 1047: 

 No. I the winged insect, No. 3 the larva, No. 4 natural size). The 

 A. vastator attacks a large number of plants, and is one of the 

 most destructive pests which can annoy the 

 gardener. It lives upon the under side of 

 the leaves of plants, and I have counted a 

 hundred insects on a leaflet of the potato plant 

 (fig. 1048). 



The Black Aphis (A. rumicis, 

 fig. 1049) i s considered to be A. 

 fabcz, or Bean Aphis. It lives 

 upon the stalks of the broad 

 beans, near the top, and it is usual 

 to cut off their top so as to de- FlG I049 ._ BIack 



Aphis, magnified. 



stroy these creatures. 

 Our plum-trees are terribly infested by the Plum Aphis (Hya- 

 lopteris pruni, fig. 1050). The under side of the leaves are sometimes 

 so thickly covered with these creatures that the point of a pin cannot 



FIG. 1048. Aphides on 

 Potato-leaf, nat. size. 



