40 MOTHS AND BUTTERFLIES. 
expanded wings, the fore wings being white with black dots, the 
hind wings dark gray. 
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Sy 
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Depressaria robiniella. 
Depressaria robiniella. This moth expands three-fourths of an 
inch. ‘The head and fore wings are reddish-brown spotted with yel- 
low. The hind wings and body are gray. The green larvee live on 
the leaves of the locust and spin their webs among the leaves drawing 
them together. They are very active creatures and in searching for 
them by pulling their webs apart they are very hable to wriggle away. 
The larvee are said by Packard to pupate among fallen leaves on the 
ground, 
The genus Nepticula contains many very minute and yet many 
very beautiful species. To this genus belong the smallest of all 
known lepidopterous insects, many of them less than an eighth of 
an inch in expanse of wing. The larve of these minute insects 
mine in the leaves of different species of trees. 
TORTRICIDZ:. 
The leaf-rollers, so called because the larve of most of the 
species of this group of moths form the ends of leaves into rolls for 
their protection, are a numerous family, represented by many species 
in this country. 
The fore wings of these moths are broad and are often brilliantly 
colored, while the hind wings are usually sombre. 
Some of the larger species are gregarious in the larval state, 
uniting a number of leaves by webs, among which they feed and 
Various Forms of Leaf-rollers, 
finally pupate, leaving the empty shells of their chrysalides protrud- 
ing from the webs. 
