. Bulletin. Agriculture -- New Hampshire. Fig. 13.—The egK 'JU ;> leaf—greatly were from the nearest apples, and other points, all of which have a practical bearing upon combating the pest, as will be seen below. Three of these large cages and numerous smaller ones covering indi- vidual limbs or twigs were used last season. It was found that practically all of the eggs were laid upon the leaves, upon the upper or under surface indis- criminately and a few, less than one twentieth, on the apples and bark. In 1906 the first eggs were laid June 10 and the last about enlarged. July 1. The indiv
. Bulletin. Agriculture -- New Hampshire. Fig. 13.—The egK 'JU ;> leaf—greatly were from the nearest apples, and other points, all of which have a practical bearing upon combating the pest, as will be seen below. Three of these large cages and numerous smaller ones covering indi- vidual limbs or twigs were used last season. It was found that practically all of the eggs were laid upon the leaves, upon the upper or under surface indis- criminately and a few, less than one twentieth, on the apples and bark. In 1906 the first eggs were laid June 10 and the last about enlarged. July 1. The individual egg upon the leaf or fruit looks much like a small white blister, about the size of a pinhead. It is at first quite transparent, but later a blackish streak is seen, showing the caterpillar forming within. The eggs are seen with difficulty and are found only by the most careful search. They hatch in from five to ten days, depending upon the temperature, those laid in the middle of June hatching ten days later, and those laid June 29 in five days. The Larva, or Apple Worm.—The young apple worm is at first only about one sixteenth of an inch long, of a whitish color, with a shining black head, and with distinct, blackish tubercles on the back, which become quite obscure in later life. As soon as the young worm crawls from the egg it usually makes a frugal breakfast upon the tender part of a leaf, preferably at the juncture of the veins on the under surface. Indeed, occasionallv a worm may. Fig. 14. -The young a p p 1 e w () r m — greatly 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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