144 
Psyche 
[December 
spraying, continued intermittently even throughout the mild winter 
of 1949-50, the population was somewhat controlled and the plant 
was still vigorous at the time of my visit. 
The late appearance of the adults suggests that this species over- 
winters in the egg stage as do the other two species of Stephanitis 
that occur in New England and that also infest members of the 
plant family Ericaceae. Of added interest is the fact that Stephanitis 
pyrioides (Scott) was collected on a deciduous azalea on the opposite 
side of the house. This species was not found on Pieris. However, a 
few specimens of S. glohulif era were associated with S. pyrioides 
on the azalea. Such other ericaceous plants as Kalmia and Rhodo- 
dendron in her garden supported no lace-bugs at that time. 
It is evident that this recently introduced species may become a 
serious pest of Pieris and possibly of other ornamental Ericaceae. 
Through Dr. C. L. Remington I learn that for two or three years 
the nurserymen of Fairfield County, Connecticut have complained of 
serious damage to Pieris by lace-bugs. Since other species are not 
known to feed on that host, it is apparent that S. glohulif era is al- 
ready well established. At this time it is only possible to suggest 
that eggs of the species were probably introduced before 1945 in 
the foliage of evergreens shipped from Japan or elsewhere. Mrs. 
Winton knew of infested plants in four or five gardens within three 
to eight miles of her home. She thought these infestations were 
probably of earlier origin than the one on her Pieris. 
The following notes provide criteria for the identification of the 
three species of Stephanitis now established in the northeast. Both 
S. pyrioides (Scott) and S. glohulif era (Matsumura) may be readily 
distinguished from S. rhododendri Horvath by their somewhat 
greater length, by their darker hood and hemielytral markings 
(which become intensely black in S. glohulif era) , by their much 
more inflated hoods (again extreme in S. glohulif era) , and by their 
much abbreviated lateral carinae. The paranota of S. rhododendri 
flare conspicuously. This species also differs from both the other 
species in the greater width of the hemielytra and in the abundance 
of silky setae on all the nervures of the membranous parts. 
The differences between S. pyrioides and S. glohulif era are less 
obvious, but, nevertheless, pronounced. The most noticeable dis- 
tinguishing features include the conspicuously dark color pattern of 
S. glohulif era. In this species the entire hood of mature specimens 
is black. All the pronotal (including paranotal) nervures, except 
