CAPE COD CRANBERRY INSECTS 



47 



the very hind end. About thirty-two deep rusty-brown lines run along 

 the body, some above, some below. There is a row of conspicuous white spots 

 along each side, mostly above the .spiracles, most of them bordered with one 

 black spot in front and another behind. 



The PujKi. 



The worms pupate in early and mid-.Vugust. The jnipa is white, marked 

 with black and yellow, and is about four-fifths of an inch long. It is formed 

 in a slight but well-made net of yellowish threads among twigs or leaves or 

 grass (fig. 33). This stage lasts about a month. 



The Moth. 



The moths fly in September and early October. They are so abundant some- 

 tunes that the males come to street lights in clouds. The females fly little if 

 not disturbed. Both sexes have snow-white wings marked with zigzag lines 

 and dots of black (fig. 34). The face is deep yellow and there is a patch of 

 yellow in front of the base of each fore wing. The antennae of the male are 

 very bushy, those of the female threadlike. The male expands about an inch 

 and a. half, the female an inch and three-eighths. 



Chain-spotted Geometer. 



Fig. 33. Pupae. Enlarged. 

 Fig. 34. Male moth. 



The Eiiy. 



One female sometimes lays as many as 368 eggs. They are scattered in- 

 discriminately on the ground, mainly in the latter half of September. They 

 hatch the following spring. They are greenish yellow at first but become 

 brownish lavender in a few days. They are about a thirty-third of an inch 

 long and are broadly elliptical with one end flattened or somewhat cupped. 



Treatment. 



Spraying with 6 pounds of dry lead arsenate to 100 gallons of water is 

 advocated. If this is done on the upland when the worms are small it will 

 prevent trouble on the bog later. Keeping the marginal ditch cleaned out 

 and partly full of water, as advocated for the gypsy moth, secures a bog from 

 infestation. 



