88 TRUE TUSSOCK-MOTHS. 
ish-yellow. They transform in similar hiding places to pupz 
which winter over. Fig. 83, Plate X XI, shows one of these 
caterpillars. 
The moths are much paler than those of carye and 
maculata, being only faintly tinged with ochre-yellow. Their 
long, narrow, delicate and semi-transparent wings lie almost 
flat on the top of the back; the fore-wings are checkered 
with darker ochre-yellow dusky spots arranged so as to 
form five irregular transverse bands. The hind edge of the 
collar, and the inner edges of the shoulder-covers are green- 
ish-blue, and between the latter are two short narrow deep- 
yellow stripes; the upper side of the abdomen and of the 
legs are deep ochre-yellow. The wings of this moth expand 
about two inches. 
FAMILY LIPARIDAZ OR TRUE TUSSOCK-MOTHS. 
Tussock-moths are of medium size; the antennz of both 
sexes, when winged, are pectinated, those of the males very 
broadly so; the wingless females have serrate or narrowly 
pectinate antennez. The adult moths are usually very plain 
in coloration; the legs are clothed with wooly hairs, and 
when the insect is at rest the fore-legs are always stretched 
forwards and are very conspicuous. In some the females 
are practically wingless, the wings being at most mere use- 
less pads. Most are nocturnal, though the males of some fly 
during the day. The larve are the most beautiful of our 
caterpillars, being clothed with brightly colored tufts of 
hairs. 
THE WHITE-MARKED TUSSOCK-MOTH. 
(Orgyia leucostigma S. & A.). 
This caterpillar looks quite different from those of the 
other Tussock-moths described before. It is not a common 
insect in Minnesota, but is rapidly increasing in numbers. 
