202 



INJURIOUS INSECTS 



to tlie ground, where tliey 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 Ourrant-worm. 



THE IMPORTED CURRANT- 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 Hyme7ioptera; 

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



Fig. 124. — THE IMPORTED CURE ANT-WORM {Nemolus ventricosus, Ring.) 



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 Kochester, Y., cibout the year 1857, though 

 it appears to have been known in Canada at an earlier 



