200 



Insect Pests. 



The lame and nymphs have a particuhiiiy obnoxious smell. 



They are easily destroyed by jariing them off the trees and 

 crashing on the ground. It will be interesting to see if this new 

 habit of Trojiicoris viijipcf^ Ijecomes permanent, or if it will remain 

 an isolated case. 



THE CUCKOO SPIT INSECT. 



{Phihcnus qiuiiiariu^. Linn.) 



The so-called Cuckoo Spit Insect is now and again found on 

 fruit trees, especially cherry and apple. 



The white frothy substance formed by the larvie and nymphs 



is well known, and is especi- 

 ally noticeable on hawthorn 

 hedges and on roses. 



The young forms are pale 

 greenish-yellow and are (|uite 

 covered with the ^vet froth. 



The mature Frog-hopper 

 (Fig 155) is winged, and by 

 means of the wings and hind 

 legs it takes flying leaps 

 into the air. It is almudaut 

 everywhere, and reaches about \ inch in length. The front wings 

 are brown to yellowish-brown ^^•ith pale areas ; all shades occur, 

 from almost entirely A'ellow to black, but it may alwa>"s be told 

 from other related species by the distinctly curved side margins 

 of the elytra. 



Should they occur in any numbers on fruit trees they ma}- be 

 easily killed if the trees are heavily washed with water and then 

 sprayed with tobacco wash {vide appendix). 



IF. Edemlen. 

 FIG. 1.:'5.— A1>L'I.T F]:OG-Hi:il'PEKS (J'l!il:>'nufs spuiiian'a). 



