168 - 
New Hampshire 
New York 
Wisconsin 
Illinois 
.arkansas 
TENT CATERPILLAR ( Mala co soma arcericana Fab. ) 
P. R. Lowry (July 12): Adults are now emerging. Has been very 
common but hardly as numerous as last year in this locality (Durhai 
C. R. Crosby and assistants: Many trees especially on roadsides 
practically defoliated in Columbia County, while these insects hav 
been doing much damage in neglected orchards in Genesee County. 
S. B. Fracker (July 15): Reported from Sauk County attacking app 
WHITE- MARKED TUSSOCK MOTH {t Hemerocanrpa leucostigma S. & A. ) 
W. P. Flint (July 21): This insect is Quite abundant throughout 
central Illinois and has occurred in greater numbers in apple or- 
chards than is usually the case. The first-brood larvae are now 
maturing. 
APPLE LSAFH0PPER3 ( Erythroneura hartii Gill. , and E. obi i qua Say) 
A. J. Ackerman (July 17): These two species of leafhoppers cause 
considerable injury to apple during most seasons in northwestern 
Arkansas. The first-brood nymphs were not as abundant as usual 
this year, because of a late spring with much cool weather and 
frequent rains. Second-brood nymphs are now hatching and with 
continued hot weather heavy infestations of hoppers are likely to 
occur. This is the first season that sprays have been applied 
for the control of these apple leafhoppers in commercial orchards. 
ROSS LSAFHOPPER (Emnoa rosae L. ) 
Massachusetts 
Arkansas 
Arkansas 
A. I. Bourne (July 24): 
was determined as rosae. 
Material which was sent to Dr. E. D„ Bal 
These insects have been present in un- 
usually large numbers, many growers stating that the infestation 
rmas the worst they had experienced for years, 
A. J. Ackerman (July 17): This leaf hopper apparently is no longe 
abundant enough in apple orchards to cause much injury. Evident! 
the continued use of dormant sprays with oil emulsions has prevent 
the overwintering eggs of this leafhopper from hatching. 
POTATO LEAFHOPPER (Empoasca mali LeB. ) 
A. J. Ackerman (July 17): The potato leafhopper caused some inju 
in bearing apple orchards as well as on young apple trees, in 1923 
and again this season. Most of the injury results from feeding b; 
the overwintering adults and by the first-brood nymphs. Curling 
of the terminal leaves followed by the characteristic hopperburn 
of the tips is evident in most orchards but injury is not severe 
enough to require a special spray application for this insect. 
