INSECTS INJURIOUS TO THE HICKORY. 7% 
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spots, and along the back 8 black tufts of converging hairs and two black pencils of 
longer hairs near each end of the body; spinning in sheltered corners and crevices 
ash-gray oval cocoons ; the moth appearing the following June. (Fitch.) 
In certain years this caterpillar may be quite numerous ; it is quite 
social, feeding in companies and is a general feeder, and, while preferring 
_the walnut, butternut, and sumach, is common on the elm and ash, and 
Fitch says he has seen clusters of the caterpillars upon the tamarack or 
larch ; he adds, what has been observed by ourselves, that as they ap- 
proach maturity they separate and stray off to other trees, and may then 
be seen on rose bushes, on the apple, oak, locust, &c., the same indi- 
vidual often remaining several days in one place. It ranges from Maine 
to the Southern States. 
The moth is very light ochre yellow ; the long narrow-pointed fore wings are thickly 
sprinkled with little brown dots, and have two oblique brownish streaks passing back- 
wards from the front edge, with three rows of white semi-transparent spots parallel 
to the outer hind margin; hind wings very thin, semi-transparent, and without spots. 
The wings expand about two inches. (Harris. ) 
40, THE SKIFF CATERPILLAR. 
Timacodes scapha Harris. 
Order LuriporTera ; family BoMBYCID. 
A singular boat-shaped triangular caterpillar, green, spotted above with brown 
pale beneath, the sides raised and the dorsal surface flattened ; forming in the autumn 
a tough rounded oval cocoon, covered by an outer thin envelope. 
The moth appears in June ; it is light cinnamon brown; on 
the fore wings the costo-median region is filledin with a large 
tan-brown triangular spot, ending on the tip of the wing, and 
is lined externally with silver. 
A number of other Bombycide allied to Lima- 
codes, Notodanta, Halesidota, &c., also inhabit the y,,. 35. 
: : ; Limacodes sca 
hickory; besides these, the American silk worm a 
sometimes occurs on the hickory, as well as the goldsmith beetle, 
which, according to Fitch, feeds on the leaves. 
41. THE WALKING STICK. 
Diapheromera femorata Say. 
Order ORTHOPTERA ; family PHASMID#. 
Sometimes stripping the leaves of the hickory, white oak, locust, &c., causing the 
timber to appear seared and leafless, a singular insect which would be mistaken for 
the smaller twigs or leaf-stalks, as the body is very long and slender, wingless, nearly 
four inches long, cylindrical, and an eighth of an inch in diameter. 
A large number of Hemiptera, such as gall-lice, tree-hoppers, “c., 
