52 MOTHS AND BUTTERFLIES. 
The larva of Amphidasis cognataria feeds on the maple and cur- 
rant, and, like the full-grown moth, is thick-bodied for a geometrid. 
Amphidasis cognataria. 
The moth is dark gray, speckled and marked with black, and about 
two inches in expanse. 
Rheumaptera hastata. 
Rheumaptera hastata is a black-and-white moth, little more than 
an inch in expanse, easily recognized from the other species of this 
class. It may be found in June along roads in the woods, where 
it flies in the daytime, much like a butterfly. This insect is said 
to be widely distributed, being found in Europe and Asia, as well 
as America. The caterpillar, which is dark brown, feeds on the 
leaves of the birch, where it lives in colonies. 
Hybernia tiliaria. 
This moth, Hybernia tiliaria, about two inches in expanse, resem- 
bles the canker-worm moth, in that the female is wingless and that it 
is in the larval state destructive to fruit and shade trees. The larvee 
are yellow, with black lines on the back and sides, and are sometimes 
so plentiful as to completely denude trees of their foliage. When 
