ISBN: 9780217313322

Carnegie Institution of Washington, Paperback, English-language edition, Pub by General Books LLC Books History~~General Carnegie-Institution-Of-Washington-Publication~~Carnegie-Instituti… Mehr…

Carnegie Institution of Washington, Paperback, English-language edition, Pub by General Books LLC Books History~~General Carnegie-Institution-Of-Washington-Publication~~Carnegie-Institution-Washington General Books LLC Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: Larva, Stage IV (plate 116, fig. 399).?Head rounded, wider than long, narrowed before eyes, a slight notch at insertion of antennae, front margin broadly arcuate; both pairs of dorsal head-hairs in threes. Antenna e short and slender, smooth, a small tuft at middle; two long spines before tip, beyond which the shaft is somewhat bent and narrowed and carries an apical spine and two digits. Eyes large, transverse, pointed. Mental plate triangular, excavated at base, a central tooth, and nine on each side, the basal ones a little more remote and sharper. Mandible quadrangular, a filament and a hair before tip; an outer row of cilia; a row of fine hairs from angular prominences on outer margin; dentition of four nearly equal teeth on a process; a tooth before, a broadly triangular one at base, and two broad, deeply serrate filaments within; process below slender, furcate, with lines of hairs; basal angle sharp; a row of coarse hairs within and one at base. Maxilla elongate, divided by a band-shaped suture; inner half with rows of stout cilia; a tuft of long hairs at tip; outer half with a single articulated filament next the suture; palpus about half as long as maxilla, with two large and two small terminal digits. Thorax rounded, wider than long; hairs abundant but not long. Abdomen moderate, anterior segments shorter; lateral tufts of first two segments multiple, the following ones small and short. Tracheal tubes broad, band-shaped. Air-tube large, inflated, elliptical in outline, nearly three times as long as broad; pecten of two or three teeth on the basal third; single tooth a spine with broad base and one or two basal branches. Lateral comb of eighth segment of six separate scales; single scale elliptical, with heavy outer margin, a long apical spine, a slightly curved subapical...<

ISBN: 9780217313322

Carnegie Institution of Washington Publication Vol. 159 Author :Carnegie Institution of Washington 9780217313322 0217313329