1909.] The Insect and Allied Pests of the Hop.. 559 



hatch out and feed on the roots of the hops and other 

 plants. The grubs (PI. 1, Fig. 6b) are white or dull creamy, 

 footless, curved, and wrinkled, with a distinct brown head. 

 They feed on the roots all through the winter, and turn to 

 pale brown pupae in the spring. In length the mature larvae 

 are about one-third of an inch. 



Treatment. — The beetles may easily be collected in two 

 ways : first, by jarring them off at dusk on to tarred cloths, 

 or secondly, by placing pieces of sacking at the base of the 

 bine, where the beetles collect during the day, and can then 

 be easily destroyed. Vaporite is known to kill the larvae of 

 weevils in the soil, but it is not known if it is effectual on 

 those hidden in the root centres as these are. 



Other Weevils found on Hops. 

 (1) The Ivy and Hop Weevil (Liophlceus nubilus, Fab.). 



This weevil was recorded attacking hops at Farnham and 

 in several districts in Kent. 



(2) The Black or Vine Weevil (O. sulcatus. Fab.). 



This has also been sent me from hops in Kent in two cases, 

 but not in any numbers. 



The first-named especially attacks the tender shoots, and 

 resembles in general habits the Otiorhynchi. It varies con- 

 siderably in size, small males being only one-third inch 

 long, some females as much as three-fifths inch. They are 

 black, covered with ashy-brown scales, the wing-cases having 

 small tessellated spots. They live in hedges, on young 

 trees and ivy, as well as on the hop. 



The Brassy Hop Flea. 

 (Plectroscelis concinna, Marsh). 



In all hop districts this flea beetle occurs, and in some 

 years it does a considerable amount of harm. Some growers 

 pay no attention to it and say they can keep it in check 

 easily, others that they cannot and that it is a most persistent 

 pest. There is no doubt that in certain years the "flea" 

 does a lot of harm. 



The beetle is oval in form, and has shiny, bright bronze 

 to brassy wing-cases; beneath it is black, and its legs are 



