THE GRAPE-LEAF SKELETONIZER. $7 
When the larve are full grown they seek some secluded place in 
which to pupate, usually spinning their cocoons on fallen leaves or 
in trash around the vine, or, when confined, to the sides of the cage. 
The period covered by one group of larve in spinning their cocoons 
will vary from 1 to 2 weeks, although the time required for the for- 
mation of each individual is not more than 2 or 3 days. 
The winter is passed in the cocoon, the insect being in the pupal 
stage. 
IDENTITY. 
The shght variation in appearance of the moths and the differently 
marked larve bring up the question of identity. Dyar“ thinks there 
is little difference between the moths of Harrisina americana and 
those of H. texana which Stretch separated by the presence of an- 
other vein, because moths of both kinds were taken together in the 
same locality. He found, however, two kinds of larvee, those of /7/. 
texana having the dorsum of joints 2-13 broadly bright-yellow, and 
banded between each joint with blackish and again across the middle 
of each, including the warts, with purple-brown. The larve of Har- 
risina australis were similar to those of 7. tevana. He further says, 
“Tf it were not for the two kinds of larvee, I would not hold these 
three forms separate.” Credit is due to Dr. H. G. Dyar, of this 
Bureau, for examining all of the material in the Bureau collection 
and for determining it all as belonging to one species, Harrisiia 
americana Guer. 
NATURAL ENEMIES. 
Up to the present time only one parasite had been recorded from 
this insect, namely, the chalcidid Perilampus platygaster Say, which 
Riley mentions as being a parasite of the larva. This summer, how- 
ever, the writer reared a little hymenopterous parasite which was de- 
termined by Mr. J. C. Crawford, of the U. S. National Museum, as a 
braconid, Glyptapanteles sp., and also an ichneumon, Limneria sp., 
which was reared from larve sent in by C. M. Streeter, Dalton, Pa. 
REMEDIES. 
While the insect has never proved a serious pest in large vineyards, 
and is usually more troublesome in gardens or back yards where there 
are only a few vines, it has been found sufliciently numerous at 
times to demand attention and remedial measures. 
The gregarious feeding habit of the larve makes hand-picking in 
small areas the most efficient treatment, as one person can go over a 
large number of vines in a short time and destroy a very large num- 
ber of the larva, since they will be found in large groups upon the 
“Proceedings of the Entomological Society of Washington, Vol, V, p. 826, 
