Practical Information On The Scolytid Beetles Of North American Forests I Barkbeetles Of The Genus Dendroctonus

Author : Andrew Delmar Hopkins
Publisher : Rarebooksclub.com
ISBN 13 : 9781230001869
Total Pages : 62 pages
Book Rating : 4.0/5 (18 download)

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Download or read book Practical Information on the Scolytid Beetles of North American Forests; Barkbeetles of the Genus Dendroctonus written by Andrew Delmar Hopkins and published by Rarebooksclub.com. This book was released on 2013-09 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 edition. Excerpt: ...but slightly narrowed toward the head, and punctured, and elytra with coarse rugosities toward the base and declivity, the latter with long hairs. It attacks pine trees in Mexico, where a large amount of timber has died in certain localities, evidently owing to the work of this and the larger Mexican pine beetle. It excavates winding egg galleries (fig. 35) through the inner bark, the larval mines being concealed, like those of the western and southwestern pine beetles, beneath the inner surface of the bark. Very little appears to be known of the seasonal history and habits of this species, Fig. 35.--The smaller Mexican pine beetle (Dendroctonus mexicanm): Adult, greatly enlarged, and section of egg gallery, slightly enlarged. (Author's illustrations.) Fig. 36.--The smaller Mexican pine beetle: Distribution map. (Author's illustration.) but evidently they will be quite similar to those of the southwestern, southern, and Arizona pine beetles. It will therefore be subject to the same general treatment for its control, namely, the removal and burning of the infested bark during the principal period of larval development and during the inactive or overwintering periods, if such are found within its range. This species has not been recognized within the United States, but it is not improbable that it may be found in the pine forests of southern Arizona and New Mexico. The writer has identified thirty-six specimens received from Prof. A. L. Herrera and Dr. S. J. Bonansea, collected from pine in Amecameca, Michoacan, and Tacubaya, Mexico. BIBLIOGRAPHY. Hopkins, 1906c, p. 80; Hopkins, 1909, pp. 97-99. No. 7. THE LARGER MEXICAN PINE BEETLE. (Dendroctonus parallelocollis Chap. Figs. 37-39.) The larger Mexican pine beetle is a somewhat elongate, ...