200 hisect Pests. 



The larvfe and nymphs have a particularly obnoxious smell. 



They are easily destroyed by jarring them off the trees and 

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

 habit of Trojncoris rufipes becomes permanent, or if it will remain 

 an isolated case. 



THE CUCKOO SPIT INSECT. 



(Philccnus sjmmarius. 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 larvae 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 quite 

 covered with the wet froth. 



The mature Frog-hopper 

 (Fig 155) is winged, and by 

 [F. Edenden. " meaus of tlic wings and hind 

 KiG. 155.— ADULT FROG-HOPPERS {PMixmis spumaria). legs it takes flying leaps 



into the air. It is abundant 

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

 are brown to yellowish-brown with pale areas; all shades occur, 

 from almost entii^ely yellow to black, but it may always 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 may be 

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

 sprayed with tobacco wash {vide appendix). 



