HICKORY. LEAVES HICKORY TUSSOCK-MOTH. 159 



The larva which occur in the walnut galls are of different sizes, the largest 

 being 0.025 long, of an oval form and a light yellow or yellowish green color, 

 with dusky legs and antennas. Younger individuals are white, shining, and 

 somewhat hyaline, with pellucid white legs. The antennae are short and 

 robust, consisting of two short thick basal joints and a longer terminal one of 

 a conical form, and giving off a short bristle on one side near the tip. The 

 legs are also short and thick. 



The wingless Females, of which one is found in each gall, she being the 

 parent of the multitude of larvas around her, measures 0.04 in length, or 

 somewhat more. She is of a plump egg-shaped form, narrower posteriorly 

 and flattened on the under side. The segments of the abdomen are much longer 

 than those of the thorax, and are separated by impressed lines. The legs are 

 short, scarcely projecting beyond the outer margin, and with the antennas are 

 blackish, the general color of the body being yellow, often of a dull or dirty 

 tinge. 



Trees are much disfigured by the excrescences upon the ends of 

 the limbs which this louse produces, which show conspicuously 

 after the leaves have fallen. It requires two or three years for 

 them to decay and become obliterated, and in the mean time a 

 new stock is annually added, for where these insects obtain a lodg- 

 ment they continue year after year, stinting the tree in its growth 

 and blasting its fruit. Though there sometimes grows upon such 

 trees nuts which are full sized and appear externally to be fair 

 and well formed, they are found upon cracking to be destitute of 

 meats. 



It is quite probable that these insects may be expelled from the 

 trees which they infest by rubbing the ends of the limbs with soft 

 soap soon after the leaves put forth. Or a month afterwards, 

 when the galls are green and filled with lice, by eutting off and 

 burning all the twigs and leaf-stalks on which these galls are 

 growing, the tree will probably be relieved from a renewed at- 

 tack the following year. 



AFFECTING THE LEAVES. 



Consuming the leaves ; white caterpillars with eight tufts of converging 

 black hairs on the back and towards each end a pencil of long black 

 ones on each side. 



The Hickory tussock-moth. Lophocampa Caryce. Harris. 



Of the caterpillars of our State, one which will be most apt to 

 be observed on account of its clean neat appearance, and the re- 



