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INSECTS INJURIOUS TO THE APPLE. 
THE GREEN APPLE LEAF-HOPPER. 
Empoa albopicta, n. 8. 
Order Hemiptera. Family Jassipm. 
[Plate XIV, Figs. 3 and 4.] 
I regret to have to add another species to the already alarming 
host of insects which attack the foliage of the apple. On the 26th 
of June my attention was called by the owners of the Home Nur- 
sery, at Normal, to an injury to the fresh and tender foliage of 
their young apple trees; and, upon investigation, | found that a 
minute leaf-hopper of the family Jasside was partly responsible for 
the mischief. ‘I'his species occurred upon the leaves in such numbers 
that, in walking between the rows, one would drive them upwards 
in clouds. A careful examination showed that from two to six or 
eight were present upon every young leaf, with their beaks inserted, 
causing the leaves to curl, and shrivel, and turn first yellow and then 
brown. At this time nine-tenths of the specimens were in the larval 
or pupal stages, only a very small number having yet acquired their 
wings. 
On the 6th of August, the same species was discovered excessively 
abundant upon young apple trees at Centralia. The majority of 
them were now fully developed adults, but all the stages are repre- 
sented in our collections. The effect at Centralia was as apparent 
as at Normal, in the curling and discoloration of the leaves. 
Mr. P. R. Uhler, of Baltimore, was kind enough to study speci- 
mens for me, which I sent to him, and has informed me that they 
represent a species new to science, belonging to the genus Kmpoa 
of Fitch. 
DESCRIPTION. 
This is a slender, linear-ovate leaf-hopper, 2.8 mm. long by .8 mm. 
wide across the pronotum. The general color is pale green, with a 
slight yellowish tinge, the abdomen being somewhat paler. The 
head, thorax and abdomen are variously marked with white. 
