220 N. H. AGR. EXPERIMEXT STATION. [Bulletin 139 



The caterpillar spins an oval grayish cocoon under stones or 

 rubbish, in the crevices of a wall or bark, and transforms to the 

 pupa, in which stage the winter is passed. 



Moth. — (Figure 8, b.) The moths emerge about the middle 

 of June (June 16, 1898 ; 21, 1900) . The wings of the female ex- 

 pand from 11/2 to 2 inches, the fore-wings being light brown, spot- 

 ted with silvery white markings, and with the veins darker 

 brown. The thorax is light brown, and the abdomen darker 

 brown. The male is smaller and has the antemia^ more feathered. 

 The eggs are doubtless laid on the foliage about July 1st, l)ut 

 do not seem to have been observed. 



REMEDIES. 



Spraying with paris green or arsenate of lead about the 1st 

 of August, as advised for the above caterpillars, will usually con- 

 trol this species ecpially well. 



the"rusty tussock moth.* 



One of our most common orchard caterpillars is that of the 

 Rusty Tussock Moth, which is also, throughout most of the state, 

 the most common of the three tussock moths to be described. 



Eggs. — Very often the eggs of this insect are first noticed, as 

 they are readily seen, upon the dead leaves attached to the tree 

 during the winter, and are often sent to us mistaken for l)rown- 

 tail moth eggs, which occur only in August. From 2(10 to 300 

 eggs are laid together on a leaf, as shown in figure f). The eggs 

 are bare with no covering as in the next species. 



Larva. — The eggs hatch irregularly, some hatehing about ]May 

 ]st and others in the same mass not hatching until possibly a 

 month later. Upon hatching the young larva feeds for a short 

 time on the old egg shells before attacking the foliage. The cat- 

 erpillars require about 35 days for their development, molting 

 four times during growtii. The full gi-own caterpillar resembles 

 the two species next described, having the pencil or brush of 

 black hairs projecting like a horn on either side of the head, and 

 a similar median tuft near the tip of the abdomen, and with the 

 four white tussocks of hairs on the middle of the first four ab- 

 dominal segments. The present species, however, is much darker 



* ,Notolophu8 antiqua Linn, 



