752 
ANNUAL REPORT OF NEW-YORK 
LARCH. 
287. Larch chbater, Planosa Laricis , Fitch. (Lepidoptera. Bombycidae.) 
On the limbs in June and July, feeding on the leaves; a large 
flattened ash gray worm resting appressed to and closely re¬ 
sembling the bark; forming an oblong flattened gray cocoon 
moulded to the limb and resembling the bark in its color; the 
latter part of July producing a thick-bodied moth with thin 
delicate wings, which are almost transparent in the males and 
1.00 broad, in the females 1.50, and of a white color with faint 
wavy dusky bands. See Transactions, 1855, page 494. 
288. Larch Aphis, Lachnus Laricifex, new species. (Homoptera. Aphides.) 
Solitary upon the small twigs, stationed in the axils of the 
tufts of leaves, with its beak sucking the juices that should go 
to the leaves, a wingless brown plant-louse slightly tinged with 
coppery, 0.12 long, with a dull white line along the middle of 
its back and a similar whitish band at the sutures of each of 
the abdominal segments, in which bands on each side of the 
middle are three black punctures, the short tubercles on each 
side of the tip deep black, the under side dull white and dusted 
with white powder, the legs pale with the feet and knees black 
and also the apical half of the hind thighs and shanks, and the 
antennm pale with black tips. 
Many of these lice were noticed on a particular tree the 
latter part of May, but no winged ones were to be found. Ants, 
as usual, were guarding them and drinking the honey dew 
which they ejected. Many of them were accompanied with 
four or more young, huddled close around the base of the 
sheath from which the leaves arise. These were scarcely half 
the length of the parent, of a light dull yellow color with two 
brown spots above on the base of the abdomen, the legs and 
antenuaj similarly colored to those of the parent but more pale. 
289. L.uicn CnERMES, Chernies Laricifolice, new species. (Homoptera. 
Aphidae.) 
Solitary and stationary upon the leaves, extracting their 
juices, small black shining flies 0.10 long, having the abdomen 
dark green, the legs obscure whitish, the wings nearly hyaline 
with pale brown veins and the largo stigma-spot upon their 
