The Moths and Butterflies 
4*5 
wings with six large white blotches; H. julvicosta has all the wings pure 
white with the front margin of the fore wings weakly fulvous. A familiar 
Arctian is the salt-marsh-caterpillar moth Eustigme acrcea, expanse ij 
inches, with creamy-white fore wings and soft yellow-brown hind wings, all 
the wings sparsely dotted with black. 
A small family which includes a few widely distributed and well-known 
moths is the Lasiocampidae, of which the tent-caterpillar moths are the most 
familiar. All the Lasiocampid moths, which are robust, hairy, and fairly 
large, lack the frenulum, having, however, the humeral angle of the hind 
wing expanded so as to overlap the inner hind angle of the fore wing. In 
this humeral angle are one or two short supporting veins or vein-spurs. 
Fig. 596 .—Haploa julvicosta (above) and H. contigua (in the middle and below). 
(After Lugger; natural size.) 
The best-known eastern species is the apple-tree tent-caterpillar, the 
forest tent-caterpillar being also familiar; on the Pacific coast also occur 
two common species, one specially affecting orchard trees. These four 
species belong to the genus Clisiocampa (Figs. 598, 599); the moths expand 
about 1J inches and are all brown, varying in shade from yellowish to walnut 
to chocolate-brown, with a pair of pale or distinct light or darker oblique lines 
on the fore wings. C. americana, the apple-tree tent-caterpillar, lays its 
three hundred eggs in the summer in a band or ring glued around a small 
