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ECONOMIC ENTOMOLOGY 



Larva. — When young is pale yellow with two rows of black marks 

 along the body, head black; hairs sparse; and when full grown is 

 covered with long whitish hairs arising from black and yellow warts; 

 I inch long; spins webs and feeds within them; about five moults. 



Pupa. — Cocoon of silken web interwoven with hairs; pupa dark 

 brown. Winter passed as pupa. 



Fig. 122. — Fall web worm 'Hyphantria texlor): a and 6, caterpillars; c, pupa; d, 

 adult moth. {After Howard, U. S. Bur. Ent.) 



Life-history. — Hibernates as a pupa under rubbish, in crevices 

 under walls, etc. Moths emerge in June; eggs hatch in about lo days 

 and caterpillars mature in August and September. Two broods in 

 some localities. 



Parasites. — Telenomus bifidus Riley, Meleorus hyphantrice Riley, 

 Apanteles hyphantrics Riley, Limneria pallipes Prov., Tachina sp. 



