566 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



shape 1 by f inches, as shown natural size in the figure, and is 

 deposited on the bark of trees, but where abundant, on fences, 

 stones, buildings, etc. The eggs hatch about May 1, and each 

 mass yields a swarm of young caterpillars, the bulk of which 

 become full grown by midsummer. The mature caterpillar has a 

 dusky or sooty-colored body. Along the back is a double row 

 of five pairs of blue spots, followed by a row of six pairs of red 

 spots, which readily distinguish this from any other common 



FIG. 418. Egg mass of the FIG. 419. Pupae of the gipsy 



gipsy moth on a bit of moth, male and female nat- 



bark natural size. ural size. 



caterpillar. The full-grown caterpillar is about 3 inches long. 

 Sometime in July or early August it spins a few threads of silk 

 as a support, sheds its skin and changes into a pupa, some- 

 times enclosed in a thin cocoon, but often hanging pendant from 

 its attachment. Characteristic light reddish hairs are scattered 

 over the pupa The pupal stage lasts from ten days to two weeks, 

 when the adult emerges. The moths emerge from the nrddle 

 of July to late August. The male is brownish-yellow, varying 

 to greenish-brown in color, the wings being marked with darker 

 stripes, has a slender body and the wings expand about 1 inches. 



