. A manual for the study of insects. Insects. 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,
. A manual for the study of insects. Insects. 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. VII2 VII, -Wings of Hepialus 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
