. The gypsy moth Porthetria dispar Linn. . Figure 9.—Old pupa skins underfence rail. Natural Figure 10.—ATachinidfly Tachinamella reared from a gypsy moth pupaat Wallineford. Three times enlarged. when disturbed. They usually feed at night and often rest onthe underside of the leaves during the day where their presenceis apt to be overlooked. They molt five or six times and graduallyincrease in size, reaching maturity early in July. Caterpillarsmolting five times usually develop into males, and those moltingsix times become females, according to Mosher and Webber* whohave carried on man
. The gypsy moth Porthetria dispar Linn. . Figure 9.—Old pupa skins underfence rail. Natural Figure 10.—ATachinidfly Tachinamella reared from a gypsy moth pupaat Wallineford. Three times enlarged. when disturbed. They usually feed at night and often rest onthe underside of the leaves during the day where their presenceis apt to be overlooked. They molt five or six times and graduallyincrease in size, reaching maturity early in July. Caterpillarsmolting five times usually develop into males, and those moltingsix times become females, according to Mosher and Webber* whohave carried on many experiments and observations at the I rypsyMoth Parasite Laboratory at Melrose Highlands, Mass. Duringthis entire larval period the caterpillars are hairy, dark in generalcolor and some show a predominating tint of brown and others * Journal Economic Entomology, Vol. 7. page 368, [914. THE GYPSY MOTH! HABITS AND LIFE HISTORY IS are gray. There is much variation in size, the largest caterpillarsbeing nearly three inches long (probably molting six times) ; mostof them, however, are between tw
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