20 MASS. EXPERIMENT STATION BULLETIN 239 



cranberry feeder in Massachusetts, Minnesota, New Jersey and Wisconsin-". 

 It also attacks loosestrife^^ sweet' nielilot, willow and asier. 



Description ami St'dsonal Histori/. 



The Worm. 



The worms are seen on the bogs first in early June. They mature in late 

 June or early July and pupate in early or mid-,Iuly. The moths emerge during 

 the last lialf of .Jiiiy or early in August. '1 hey lay llieir eggs late in July and 

 early in August. The eggs haLch in about ten days. The worms grow slowly 

 and are found in steadily decreasing numl)ers until tlie first of September 

 when the last disappear. They are less than a third grown wlien they thus 

 \anisli. They may hide in trash on the bog floor to winter. 



The small worms are yellowish white with l)rown heads. As they grow, the 

 liead becomes amber and the body for a time may l)e somewlnat reddish. As 

 they mature (Plate One, fig. 7), the liead changes to rather light reddisli 

 brown and the body becomes more or less oli\e green on tiie back and sides, 

 with conspicuous and somewjiat ele\ ated white spocs along tlie wliole length, 

 and usually one pale iiair rising from each spot. They grow to be fully three- 

 quarters of an inch long and pupate among the webbed upriglits. 



The Pupd: 



The })upa stpiirnis vigorously when dishirbed. It is al)out half an inch long 

 and mostly chestnut lirown, but its back is soiiewhat darker, being almost 

 black toward the front. There is a projiiinent transverse ridge at the head 

 end and several rows of small lackwardly directed teeth run across the top 

 of the abdomen. 



The Moth. 



The moth (Plate One, fig. 1) expands about three-fourths of an inch. It is 

 brown with two chocolate-colored stripes crossing each fore wing diagonally, 

 one near the middle and the other siiading tiie tip. 



The E{f(i. 



The eggs are minute, circular, and flat and partly ovcrlaji one another, be- 

 ing laid in flat shiny masses of 100 to 1-50. They are lemon yellow at first but 

 later become orange, and as they near hatciiing the brown bands of the worms 

 siiow plainly through the shells. 



Trcdftnent. 



The worms seldom are noticed nuich before tiiey mature and as they rarely 

 do serious harm it seldom pays to treat them. The nicotine and soap spray 

 advocated for the black-headed fireworm, applied thoroughly, will kill them. 



29. Hardenberg's "'Oblique-banded roller (Archips species)" was pretty certainly this species 

 (See Wis. Agr. Expt. Sta. Bui. 159, p. 15, 190.). 



30. Lyshnachia sp. 



