. Bulletin. Agriculture -- New Hampshire. THE BROWN-TAIL MOTH 113 the time the maximum reached 80° Fahr. A record of the caterpillars emerging from 10 nests of average size gave an average of 375 per nest, the largest number being 444 and the smallest 172. The webs vary greatly in size, however, as Fernald and Kirkland found as few as 47 and as many as 802 in a single web. An examination of the caterpillars in five winter webs made during the winter of 1905 showed an average of about 25% dead. After the remarkable warm Aveather of Jan- uary 21-23, 1906, a careful examination of nine nests was
. Bulletin. Agriculture -- New Hampshire. THE BROWN-TAIL MOTH 113 the time the maximum reached 80° Fahr. A record of the caterpillars emerging from 10 nests of average size gave an average of 375 per nest, the largest number being 444 and the smallest 172. The webs vary greatly in size, however, as Fernald and Kirkland found as few as 47 and as many as 802 in a single web. An examination of the caterpillars in five winter webs made during the winter of 1905 showed an average of about 25% dead. After the remarkable warm Aveather of Jan- uary 21-23, 1906, a careful examination of nine nests was made, having an average of 220 caterpillars each, of which 10% were dead, the smaller mortality possibly being due to the mild winter up to that ; It seems quite probable that were a few unu sually warm days to occur in early spring, so as to cause the cat- e r p i 11 ars to leave the webs, followed by a sharp freeze, that many of them might be killed, as were the forest tent caterpillars in 1900 (see Bul- letin 81, p. 11). Considerable Fig. 8,—Small Brown-Tail Moth caterpillars emerging COmmeut u a S from the winter web and feeding on the arisCn in the leaves of its Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New Hampshire Agricultural Experiment Station. [Hanover, N. H. ] : New Hampshire Agricultural Experiment Station
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