. A manual for the study of insects. Insects. 250 THE STUDY OF INSECTS, mines. In some of the blotch mines the epidermis of one side of the leaf is thrown into a fold by the growth of the leaf; these are tentiform mines. In addition to peculiarities in shape many mines are marked by characteristic lines or spots composed of the droppings of the larva. The following species will serve to illustrate the habits of these remarkable insects. The White-blotch Oak-leaf Miner, Lithocolletis hamadrya- della (Lith-o-col-le^tis ha-mad-ry-a-deria).—This little miner infests the leaves of many different sp
. A manual for the study of insects. Insects. 250 THE STUDY OF INSECTS, mines. In some of the blotch mines the epidermis of one side of the leaf is thrown into a fold by the growth of the leaf; these are tentiform mines. In addition to peculiarities in shape many mines are marked by characteristic lines or spots composed of the droppings of the larva. The following species will serve to illustrate the habits of these remarkable insects. The White-blotch Oak-leaf Miner, Lithocolletis hamadrya- della (Lith-o-col-le^tis ha-mad-ry-a-deria).—This little miner infests the leaves of many different species of oak, and some-. FiG. 298.—Lithocolletis hamadryadella: a, mine; 3, young larva; c, full-grown, flat-form larva; d^ head of same, enlarged; ^, antenna of same, enlarged; y, round-form larva from above; g^ same from below; ^, head of same, enlarged; z, antenna of same, en- larged; y&, maxilla and palpus of same, enlarged; /, labium, labial palpi, and spinnerets of same; ?;?, pupa; «, side view of pupal crest; o^ front view of same; ^, cocoon; Q^ moth. (From the Author's Report for 1879.) times it is extremely abundant. We have seen trees infested so badly that there were on an average four or five mines in each leaf. Figure 298 represents a leaf from such a tree. The mine is a wdiitish, blotch mine in the upper side of the 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 Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. joint author. Ithaca, N. Y. , Comstock Pub. Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895
