LEPIDOPTERA 35 
bodies of butterflies are slender; those of skippers are rather stout; 
the bodies of moths are typically heavy. 
About 60,000 species are known. In classification among 
this tremendous number use is made of the markings on the wings, but 
especially of the veins in the wings. 
The number of families is very large, and injurious species are found in 
a large proportion of them. Examples are as follows, though this list 
necessarily is brief and by no means representative of the entire order : 
Fig. 35. —A moth, Aufomeris. Original. 
Cossidx, the carpenter moths. Larv bore in the trunks or branches 
of trees. Pests of shade trees. 
Pyraustide. The larvee of many species are leaf rollers, and are 
serious pests. 
Grapholithide. Adults small. The family includes the codling 
moth, the bud moth, and other pests. 
Tortricidse. The larve usually work within webs. 
Tineina. a superfamily of very small moths, the larvee of which often 
are leaf miners, but sometimes construct cases within which they feed, 
as in the ease-bearing clothes moths. 
Sesiidw, the clear-wing moths. Larve often borers and very in- 
jurious, as the peach-tree borer, the squash borer, and others. 
