174 APHIDES, SCALE INSECTS, PLANT-BUGS, ETC. 



The kind figured (Fig. 135) are sometimes mischie- 

 vous in this country, but they scarcely require mention. 

 They are very minute insects ; their general colour 

 during most of their lives is Apple-green, varied in the 



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Fig. 134. — Potato Frog Flies : 1, 2, eggs ; 3, 4, pupae ; 5, 6, Frog 

 Flies : nat. size and magnified. 



mature insect, in autumn, with different tints, espe- 

 cially of red. They are chiefly injurious by sucking 



Fi«. 135. — Psijlla mali ; pupa nf P. pyri ; Apple-suckers, from life, 

 ■with wings expanded, and also raised as in the act of taking flight ; 

 nat. length one-twelfth of an inch. Pupa of Pear-sucker, mag., after 

 Prof. W. Saunders. 



away the juices of the young Apple-buds, or stalks of 

 the blossoms, or blossom buds. 



The most important family in this order, however, 



