234 Bush-Fruits 



form part of the musical apparatus of the insect. Its chirp is a 

 familiar sound at night during late summer and autumn. 



The insect is beneficial, in the main, rather than injurious, since 

 the young crickets, which hatch in May and June, feed principally 

 on aphids and other soft-bodied insects. The only injury worthy 

 of mention is that caused by the female in depositing her eggs in 

 autumn. Their location is shown by a narrow, ragged wound, some 

 two inches long. If the cane is split open there will be found inserted 

 in the pith a row of oblong, cylindrical, yellowish eggs, about one- 

 eighth of an inch in length. These punctures may either kill the 

 upper part of the cane or weaken it to such an extent as to prevent 

 the fruit from ripening. 



Remedy. Since the eggs are laid in autumn, but do not hatch 

 until the following summer, cutting out and burning the wounded 

 parts at the annual pruning is the only remedy necessary. 

 Reference. 



Parrott, Jour. EC. Ent. 4:216. 



THE BRAMBLE FLEA-LOUSE OR BLACKBERRY PSYLLID 



Trioza tripunctata, Fitch 



This insect is a jumping plant-louse, closely related to the pear 

 psylla. It occurs in the Atlantic states from Maine to Virginia. Its 

 native food is the wild blackberry and it has long been known as 

 an enemy of the cultivated blackberry. The following description 

 and life-history are taken from Slingerland and Crosby's Manual of 

 Fruit Insects. 



"The adult insect is about one sixth inch in length; the body is 

 yellowish-brown, the eyes dark brown, and the wings marked by 

 three yellowish-brown bands. The insect hibernates as an adult. 

 The flies appear on the blackberry soon after growth starts in the 

 spring aW deposit their minute, light yellow eggs in the pubescence 

 of the leaf petioles and young canes. On Long Island adults, eggs 

 and newly hatched nymphs were observed the latter part of June. 

 Both adults and nymphs puncture the leaves and tender canes with 

 their piercing mouth-parts and feed on the juices of the plant, causing 

 the leaves to curl, also dwarfing and distorting the young canes. 



