. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. 214 ECONOMIC ENTOMOLOGY matting the flour together and causing much damage. Full grown in 40 days. Pupa.—Formed in a cocoon; duration 11 days; cylindrical, reddish- brown above and lighter below; a cluster of small hooklets at tip of abdomen. Control.—Fumigate with carbon bisulphide, carbon tetrachloride or hydrocyanic acid gas; or better still raise room to high temperature of 120-130° for 6 Fig. 133.—Mediterr
. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. 214 ECONOMIC ENTOMOLOGY matting the flour together and causing much damage. Full grown in 40 days. Pupa.—Formed in a cocoon; duration 11 days; cylindrical, reddish- brown above and lighter below; a cluster of small hooklets at tip of abdomen. Control.—Fumigate with carbon bisulphide, carbon tetrachloride or hydrocyanic acid gas; or better still raise room to high temperature of 120-130° for 6 Fig. 133.—Mediterranean flour moth (Ephestia kuehniella): a, moth; b, same from side, resting; c, larva; d, pupa; e, abdominal segments of larva; a-d, enlarged; e, more enlarged. {After Chittenden, U. S. Bur. Ent.) Indian Meal-moth (Plodia inter punctella Hbn.). Adult.—A pyralid moth, ^ inch wing expanse. Fore wings with outer portion red- dish-brown with fine transverse markings, the middle copper and the inner portion grey; hind wings grey. A new generation in about five weeks. Eggs.—Small, whitish; as many as 350 eggs laid either singly or in clusters; hatch in 4 days. Larva.—One-half inch long, whitish or pinkish, sparsely hairy. Pupa.—Cocoon elliptical-cylindrical. Gelechiid.^ Angoumois Grain Moth {Sitotroga cerealella Oliv.). Adult.—A small moth like a clothes moth; % inch long; yellowish-grey. Hind wing dark grey, bordered with fine silvery fringe. Fore wing with a black dot between base and middle. Eggs.—Milky-white to pale red;3^^o i^ch long; bottle-shaped; 60-90 eggs hatching in 4 to 10 days. J. 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 Lochhead, William, 1864-. Philadelphia, Blakiston
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
