203 



INJUEIOUS INSECTS 



to the ground, where they may be crushed. Poultry 

 may be used to capture the -worms when they descend 

 to the ground to transform. One of the most effective 

 remedies for this, and all similar worms, is White Helle- 

 bore, used as described under Imported Currant-worm. 



THE IMPOETED CUERANT-WORM. 

 (Nematus ventricosus, Ring.) 



When the Currant-worm is mentioned in the Eastern 

 States, this is most likely to be the insect referred to. 

 It is the larva of a Saw-fly of the Order Hymenoptera; 

 these are called False-caterpillars, as they never have less 



Fig. 124.— THE IMPORTED CUKKANT-WOBM {Nemolus ventHcoms, King.) 



than six, sometimes as many as eight pairs of 

 pro-legs, while the True-caterpillars never have more 

 than five pairs. The insect is a native of Europe, and is 

 supposed to have been introduced into some of the nurs- 

 eries at Eochester, N. Y., rbout the year 1857, though 

 it appears to have been known in Canada at an earlier 



