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Hadena arctica, Boisd.—The Amputating Brocade Moth. 
The larva is the Yellow-headed Cut-worm. This species is the Ha- 
vena amputatrix of Dr. Fitch, the caterpillar of which he named as 
above the Yellow-headed Cut-worm. This species is pretty widely dis¬ 
tributed over the northern portion of both this country and Europe. 
The larva is of a pale smoky color with a bright tawny yellow head. 
The moth is nearly two inches across the wings when they are open, 
has a row of little tufts along the back of the thorax and abdomen, 
the middle portion of the fore wing reddish brown, while the rest is 
gray tinged, somewhat with brown in places, a space near the ends of 
the wings lighter than the rest. 
Spec. Char. Moth .—Expanse of wings 1.50 inches. Ground color 
gray, with the middle of the wing from the t. a. to the t. p. line a 
rich reddish brown, in the lighter specimens nearly a wine color; the 
same springled more or less overall the parts of the^wing; basal line 
double, black or purplish black, the included space gray ; the t. a. and 
t. p. lines not prominent only as they form the boundary of the brown 
space, subterminal line buff, bordered on the inside by a buff brown 
shading; stigmata gray, the orbicular mixed with a reddish brown, 
the reniform white in outer part; costa to the apical space black, 
mixed with gray; apical space and the subterminal space a lighter 
gray than the rest of the wing. Hind wings smoky the blackish 
outer border rather clearly defined. Head and thorax concolorous 
with the fore wings, the abdomen with the hind wings, a row of tufts 
along the dorsum of both tipped with reddish brown; the males with 
rather large and anal tufts. 
Remedies Against Cut-worms. 
These may be conveniently classed under two heads, as in Part 
b irst. Natural remedies, or those natural enemies or parasites that 
feed upon the caterpillars, and artificial remedies. 
Natural Remedies .—Like other vegetable feeding insects these cater¬ 
pillars are subject to the attacks of many insects and other enemies 
that materially assist in keeping them in check. Of these a class of 
two-winged flies that feed upon them internally are important. Prof. 
Riley speaks of several times breeding a species from the “Pale Cut¬ 
worm,” and I have bred a similar if not the same species. 
A great number of eggs are deposited beneath the skin by the 
female fly. The maggots from these eggs live upon the fatty sub¬ 
stances of the worm until they attain their growth, when they issue 
through the skin and spin little white cocoons which they attach 
loosely to any substance at hand. I have seen twenty-five of them 
issue from a single cut-worm. After the maggots have all issued, the 
worm is much shrunken and shriveled, and soon dies. In sixteen or 
