INSECTS INFESTING CHOP. 



63 



Gvnvicidce, or " plant-bugs/' with their larvsB and pupge, 

 have been noticed infesting the potato plants, and as these 

 find a living upon the foliage by piercing the cuticle and 

 feeding upon the juices, causing blotches on the leaves 

 and a shrivelled appearance on the stem, there is no 

 doubt their existence is accompanied by some injury to 



1 and 2. Potato bug L. solani (natural size and magnified). 3 and 4. Pupae of do. (natural 

 size and magnified). 5 and 6. L. umbellatarum (natural size and magnified). 



the plant. Amongst these we find the Lygus solani, 

 L. contaminatus, L, bipunctatus, and L. umbellatarum, 

 all or some of which are to be met with on the potato 

 throughout the country from May until the end of Au- 

 gust or September. Equally, or even more abundant 



1 and 2. Eggs (natural size and magnified).' 3 and 4. Pupge (natural size and magnified 

 5 and 6. Frog-fly Eupteryx solani (natural size and magnified). 



than the plant-bugs, are the potato "frog-flies," Euj>- 

 teryx solani and E. picta, who support themselves in 



