. An annotated list of the important North American forest insects. Forest insects. Fig. 3.—Youug larvae of L'^outc'.-^ .^aw- fly, second and third stages. Four times natural size. A Sawflij Injurious to Young Pines. 5 APPEARANCE, LIFE, AND HABITS OF THE INSECT. The needles are eaten by small larvrei one-eif^litli of an inch lon^' when youn<i: to three-fonrths or seven-ei have three pairs of legs on the thorax and eight pairs of smaller legs on the abdomen, and the head has only a single pair of e}es, situated one at each side in a rather large, circular, blackish spot. The larva? are found
. An annotated list of the important North American forest insects. Forest insects. Fig. 3.—Youug larvae of L'^outc'.-^ .^aw- fly, second and third stages. Four times natural size. A Sawflij Injurious to Young Pines. 5 APPEARANCE, LIFE, AND HABITS OF THE INSECT. The needles are eaten by small larvrei one-eif^litli of an inch lon^' when youn<i: to three-fonrths or seven-ei have three pairs of legs on the thorax and eight pairs of smaller legs on the abdomen, and the head has only a single pair of e}es, situated one at each side in a rather large, circular, blackish spot. The larva? are found clustered in colonies feeding on the pine nee- dles and occasional!}^ on the tender bark (fig. 5) of the young tAvigs. When full grown the larvae spin cocoons from which they emerge later as adults. Adult emergence is di- vided into two periods, a first issuance, brood A, and a second issu- ance, brood B. When the eggs are laid and hatch in the late spring or early summer, adults of brood A issue from the cocoons in the late summer and early fall of the same year; but adults of brood B from this batch of eggs do not issue from their cocoons until the late summer and early fall of. Fig. 4. Larv;u of Lecontc's sawfly, fourth aud tifth stages. Four times natural size. 75613°—22-. 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 Craighead, Frank C. (Frank Cooper), 1890-; Perry, George S; Snyder, Thomas Elliott, b. 1885; Hopkins, A. D. (Andrew Delmar), 1857-1948; MacAloney, Harvey John, 1896-; Graham, Samuel Alexander, 1891-; Peirson, Henry Byron, 1894-; Herrick, Glenn W. (Glenn Washington), 1870-1965; Britton, Wilton Everett, 1868-1939; Tanaka, T; Sanders, J. G; Howard, L. O. (Leland Ossian), 1857-1950; Chittenden, F. H. (Frank Hurlbut), 1858-1929; St. George, R. A. (Raymond Alexander), b. 1894; Beal, J. A;
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Keywords: ., bookauthorhopkinsadandrewdelmar, bookcentury1900, bookdecade1900
