832 
ANNUAL REPORT OF NEW YORK 
LOCUST. TRUKK. 
well for this employment, to search these flowers, more or less frequently 
as the search is more or less successful, varying as it will with the common¬ 
ness or rarity of the insects in different years, gathering and destroying all 
that are found thereon. 
The Locust Cossus, already described, $ 294, bores similar but still 
larger holes and more in the ulterior of the tree. Fortunately it is a much 
less common insect than the Locust borer. 
AFFECTING THE LEAVES AND TWIGS. 
The Io emperor moth, already described, $ 81, I find is frequently 
reared upon the locust, and is the largest worm known to us feeding on 
the leaves of this tree. The parent moth deposits her eggs in a cluster side 
by side, glueing them to the under surface of a particular leaf, which leaf 
sometimes fades and turns yellow, probably in consequence of the weight 
thus placed upon it. The eggs hatch soon after the middle of July, and 
the young worms for two or three days remain huddled together upon the 
under side of the same leaf, feeding upon the shells of their eggs till they 
are wholly consumed, before they commence eating the leaves. They are 
at first of a totally different color from the large worm which we afterwards 
see, being dull yellow with black heads and small black prickles like the 
points of needles. They remain at rest during the day, and feed by night, 
all repairing to a leaf adjacent to that on which they were born, and eating 
its end off transversely till a third or more of it is consumed, when they 
repair to another leaf in the same vicinity. But if the leaf on which they 
are resting be touched by the hand, or if they in any other manner discover 
they are noticed, they on the following night migrate to another part of 
the tree, there clustering together again on the underside of a single leaf. 
But they soon grow to such a size that a single small leaf of the locust can¬ 
not hold the whole brood, when they begin to separate. After they have 
grown to a half inch or more im length they prefer the small young leafets 
at the end of the main stems, all of which leafets they eat, together with 
the tender succulent end of the stem, for a short distance downwards, and 
then leave it and repair to .the end of another stem, feeding now some of 
the time by day. When they become so large that the under side of a leaf 
is quite too small to cover and conceal them, each worm draws three or four 
leaves around it with a few silken threads, forming a kind of loose basket 
open at the top, in which the worm lies when it is not feeding. Sometimes 
two worms unite in forming and occupying one of these baskets. 
The Hickory tussock moth larva, § 183, or a caterpillar very simi¬ 
lar to it, is also sometimes found on the locust, 
330. Tittrus skipper, Eudamus Tityrus, Fabricius. (Lcpidoptera. Hcsperidra.) 
The last of July, under a folded edge of a leaf when small, afterwards 
in two or more leaves drawn together in a kind of pod, a pale green worm 
with darker green bands, red neck and rough dull red head, 2.00 long 
