FRUIT ENEMIES. 273 



in the webs, pupate, and appear a month or so later as 

 moths. Where possible the tents or webs and the larvae 

 should be collected and burnt. Spraying in winter with a 

 caustic alkali wash might kill the eggs, and with arsenate 

 of lead in May or early June would destroy the larvae. 



Fruit Tree Beetle (Scolytus rugulosus). A small beetle 

 measuring about i-ioin. long, and of a blackish hue, which 

 does serious damage to Apple trees by making tunnels in 



Fig. 128. GOAT MOTH (Cossus LIGNIPERDA) AND LARVA. 



Both of natural size. 



the bark. In these tunnels the females deposit their eggs, 

 which hatch out into small footless white maggots or 

 grubs. These, in turn, make fresh tunnels, and so honey- 

 comb the bark that the tree gradually dies. Since the 

 beetles and larvae cannot be reached by insecticides, the 

 only remedy is to cut down and burn infested trees. March 

 is the best time to do it. 



