PSY LLASOBSOLETA: 131 


The leaves of young plants of some 6-7 years old and 3-4 feet 
high are attacked, the young larve sucking the tissues and by 
the irritation thus produced a gall growth arises on the leaf. 
After the insects have deserted the galls, the latter disappear, 
leaving holes all over the leaf. Mr. Ryan states that he has 
seen the leaves of larger trees, 8 to 10 feet high, attacked in 
this manner, but the damage done, so faras at present observed, 
would appear to be slight. 
This is all that is at present known of this Psyllid. Its 
life history during the rest of the year has yet to be studied. 
The eggs are presumably laid on the young leaves or in the 
angle of a bud, and the time when the young larve first appear 
on the leaves and the length of time they spend sucking their 
juices requires to be noted upon. 
