. The gypsy moth Porthetria dispar Linn. . enthe caterpillars first hatch from the eggs, they are of course, verysmall and are covered with hairs, some of which are bulbous andknown as aerostatic hairs. Whether or not this is their real func-tion, it is true that these first-stage caterpillars are carried longdistances by strong winds occurring at this time. Mr. Burgesshad a large screen placed on the Isles of Shoals, seven miles away 14 CONNECTICUT EXPERIMENT STATION, BULLETIN NO. 186. from the nearest infested trees. This screen was covered withtanglefoot and caught several young caterpillar
. The gypsy moth Porthetria dispar Linn. . enthe caterpillars first hatch from the eggs, they are of course, verysmall and are covered with hairs, some of which are bulbous andknown as aerostatic hairs. Whether or not this is their real func-tion, it is true that these first-stage caterpillars are carried longdistances by strong winds occurring at this time. Mr. Burgesshad a large screen placed on the Isles of Shoals, seven miles away 14 CONNECTICUT EXPERIMENT STATION, BULLETIN NO. 186. from the nearest infested trees. This screen was covered withtanglefoot and caught several young caterpillars. According tothe Federal men, this wind-spread explains the scattered infesta-tions through Eastern Connecticut in the spring of 1913. Ofcourse, if the wind blows toward the center of the infested areano harm will result, but if it blows outward, the area may begreatly increased or extended. Habits and Life History. The young caterpillars hatching from the eggs about May and hide upon the leaves, spinning down on silken threads. Figure 9.—Old pupa skins underfence rail. Natural size.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewha, bookyear1915
