. A manual for the study of insects. Insects. 198 THE STUDY OF INSECTS, the insect from which the wings were taken should be kept with the sHde. It is our practice to remove always the wings from the right side, and then to mount the slide in the collection at the right of the insect from which the wings were taken. Uniformity in this respect adds greatly to the appearance of the collection. "i« The student should study his larger speci- mens first, leaving the smaller ones till he has acquired skill in this work. There are a few spe- cial terms used in de-. scribinof the wings of the Lep
. A manual for the study of insects. Insects. 198 THE STUDY OF INSECTS, the insect from which the wings were taken should be kept with the sHde. It is our practice to remove always the wings from the right side, and then to mount the slide in the collection at the right of the insect from which the wings were taken. Uniformity in this respect adds greatly to the appearance of the collection. "i« The student should study his larger speci- mens first, leaving the smaller ones till he has acquired skill in this work. There are a few spe- cial terms used in de-. scribinof the wings of the Lepidoptera which should be learned:— Frenulum.—In most moths there is a strong spine or a bunch of bristles borne by the hind wing at the hume- ral angle (Fig. 237, /); Y\Q.'z-yj.—'^\n^^oiThyridopteryxei>heinercBformis. this is the frenulum. Its use is to insure the acting together of the two wings of one side. Except in the Microlepidoptera the frenulum of the male consists of a single strong spine; that of the female of two or more bristles. Jugui7i.—In one suborder, including only a few rare moths, j there exists, instead of a fren- ulum, a lobe borne near the base of the inner margin of the fore wing (Fig. 238, j); this is the jugum. See sub-order Jugatse. Discal Cell.—Near the cen- tre of the basal part of the wing there is a large cell lying ^^^- '^'^^^ between veins III and VII (Fig. 239, )\ this is the discal cell. In the more generalized Lepidoptera this cell is divided into two parts by the base of vein V (Fig. 239, hind wing); in such cases 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
