. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. Fig. 16.—The clover-root curculio: a, Egg, immediately after oviposition; 6, egg, one day after oviposition. Greatly enlarged. (Original.) The egg (fig. 16), as observed by Mr. J. A. Hyslop, is very slightly ellipsoidal, almost spherical, and slightly granular, measuring mm. in diameter; white when first deposited (fig. 16, a), but turning jet-black after twenty-four hours (fig. 16, b.) THE LARVA. The newly hatched larva is mm. in length by mm. in breadth and white. The head is light chocolate, the
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. Fig. 16.—The clover-root curculio: a, Egg, immediately after oviposition; 6, egg, one day after oviposition. Greatly enlarged. (Original.) The egg (fig. 16), as observed by Mr. J. A. Hyslop, is very slightly ellipsoidal, almost spherical, and slightly granular, measuring mm. in diameter; white when first deposited (fig. 16, a), but turning jet-black after twenty-four hours (fig. 16, b.) THE LARVA. The newly hatched larva is mm. in length by mm. in breadth and white. The head is light chocolate, the posterior emar- ginate portion very light, and the sides darker. The head is very prominent, and cordate, mm. in length by mm. in breadth, the posterior portion deeply emar- ginate. The abdomen bears black hairs averaging mm. in length. The full-grown larva (fig. 17) is 5 mm. in length and mm. in breadth. It is white, with a tinge of yellow. The head is light chocolate, 1 mm. in length by mm. in breadth. When found in a natural condi- tion the fresh specimen has a purplish tinge, apparently due to the contents of the alimentary canal. THE PUPA. The pupa (fig. 18) is 4 mm. in length, almost white, with a slight tinge of yellow on the dorsal abdominal area. Each segment of the abdomen bears a row of dark hairs and pos- teriorly at each side of the terminal segment are two very prominent, dark spines, with a secondary spine on the out- side of each. On the fourth day after pupation the eyes turn reddish brown and on the ninth day the mandibles become the same 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 United States. Bureau of Entomology. Washington : G. P. O.
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