84 DECIDUQUS FRUIT INSECTS AND INSECTICIDES. 
rior third of dorsum of abdominal segments 3-8 covered with very 
short, decumbent black bristles, the row not extending quite as far 
as the spiracles on either side. Cremaster wanting, replaced by six 
very short black bristles which are nearly obsolete in some specimens 
and appear as black dots. Bristles arranged on the submedio-dorsal 
aspect of the anal segment as two median pairs and one lateral 
bristle on the outside of the median pairs. Wing sheaths, and leg 
sheaths of first pair of legs, subequal, antennal sheaths longer, all 
extending to about fifth abdominal segment, those of third pair of 
legs projecting slightly beyond. Length, 6—9 mm. } 
Observations upon a number of pup during the month of July, 
1908, in Washington, D. C., show the minimum length of this stage 
to be 9 days, the maximum 12 days, while the average length for the 
period is 10.9 days. The average number of days spent in the cocoon 
is 14.8. The average mean 
temperature for the month 
of July, or the time the 
pup under observation 
were in the cocoons, was 
hose ale 
ADULT. 
(Pigst7.) 
Uniformly — blue-black, 
except a yellow collar 
which extends nearly to 
ventral side. Wings, legs, 
and eyes similar in color 
to rest of body. Antenne 
Fie: 17.—The grape-leaf skeletonizer (Harrisina pectinate, more so in male 
americana): Male moth; a, antenna of male at than In female, and plu- 
left, of female at right; b, venation of front and kT. eer hoa 
hind wings. Enlarged; a, much enlarged. (Orig- M10S€ 1 Male, engt 1 about 
inal.) five-sixteenths of an inch 
in male, four-sixteenths of an inch in female. Abdomen longer, more 
slender in male than in female and curved upward. Abdomen with 
a fan-shaped, somewhat bilobed caudal tuft. 
Length of moth, S11 mm.; length of wing, 11 mm. 
Expanse of wing, 22-24 mm. 
The following is the original description by Harris: 
Blue-black, with a saffron colored collar and a fan-shaped, somewhat ‘bilobed, 
black caudal tuft. Expands from 10 lines to 1 inch, 
