474 MISC. PUBLICATION 657, U. S. DEPT. OF AGRICULTURE 
A : 8 B 
I'igtrRE 109.—The hickory shuckworm (Laspeyresia caryana) : A, Larva in the 
shuck of a nearly mature nut, * 2; B, pupal skins protruding from shucks of 
pecan nuts. 
vicinity of pecan orchards will aid materially in reducing the infesta- 
tions in the orchards. 
The moths of the filbert worm (J/elissopus latiferreanus (Wlsm.) ) 
are extremely variable in color, size, and structure (Henrich, 2/8). 
The full-grown larva is white or pinkish and about 84 inch in length. 
This species is apparently well distributed from Montreal southward, 
and through most of the United States. The larvae are borers in oak 
acorns, beechnuts, hazelnuts or filberts, and chestnut burs. <Ac- 
cording to Forbes (/65) there may be two generations, or at least a 
partial second generation in Missouri. Keen (262) stated that there 
is only one brood a year, and that the larvae hibernate in cocoons 
within the ground. 
The moth of the locust twig borer (/cdytolopha insiticiana 
(Zell.) ) has a wing expanse of 34 to 1 inch. The forewings are dark, 
ashy brown with a 1 large, dull, pinkish-white patch on the outer part 
and several small blackish spots near the middle of this puree The 
hind wings are mouse gray. The fully grown larva is about 1% to 34 
inch in length ie reddish to straw yellow, and darker along the ‘dorsal 
line. The head is dark brow n, and the thoracic shield honey yellow. 
This borer occurs throughout the eastern part of the United States, | 
and is also recorded from Ari izona, California, and Colorado, and from 
