and is about four-fifths of an inch long. It is formed in a slight but well-made net 

 of yellowish threads among twigs, leaves, or grass (fig. 33). This stage lasts 

 about a month. 



THE MOTH 



The moths appear in September and very early October. They fly by day, but 

 the males sometimes 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 forewing. 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 EGG 



One female sometimes lays as many as 368 eggs. They are attached to the 

 lower surfaces of leaves or scattered indiscriminately on the ground, mainly in the 

 latter half of September. They hatch about the first of the following June. 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 in 100 gallons of water, 300 

 gallons to the acre, 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. 



HAIRY WORMS 



These caterpillars have copious hair over much of the body. They are open 

 feeders, never sewing the leaves together. They are like cutworms in the number 

 and arrangement of their legs and in their gait. Several kinds of hairy worms 

 occur in small numbers on the bogs, but only four need notice here. They may 

 be distinguished by the following table: 



[45] 



