Abstract The neutral lipids and the phospholipids and their fatty acids from 2 populations of insects belonging to Dendroctonus frontalis Zimmerman (Coleoptera: Scolytidae) are compared. The populations differ significantly from one another only in the amounts of...
Abstract The devastating attack of Dendroctonus frontalis Zimm. on pine trees depends on successful host selection, mass aggregation, and colonization, often progressing rapidly from tree to tree within a forest. Females beginning the attack release a pheromone, and...
Abstract The DD-136 strain of Neoaplectana carpocapsae Weiser (Steinernematidae) after spray application to pine bark in 0.1% Formalin plus wetting agent entered pine bark beetle tunnels and killed 44% of the brood and adults of Dendroctonus frontalis Zimmermann at 18...
Abstract The southern pine beetle has appeared in the southern part of Pennsylvania, and during the winter of 1932-33, many areas of infestation were located in Franklin, Fulton and Bedford Counties. Although the northern range of the insect is recorded as extending...
Abstract During the fall of 1938 a study was begun of the southern pine beetle in Gloucester County, Virginia. Examinations of the infested pine bark disclosed many dead larvae, and specimens were sent to Dr. J. G. Harrar, Plant Pathologist, Virginia Polytechnic...
Abstract The blue-staining fungus Ceratocystis minor (Hedge.) Hunt is a frequent associate of the southern pine beetle, Dendroctonus frontalis Zimmerman (Dixon and Osgood 1961, Francke-Grosmann 1967). The beetles introduce the fungus into tree phloem, and from there...
Abstract Hopkins (1909) reported that female southern pine beetles possess a transverse ridge or callus across the anterior area of the pronotum, while males have no such structure. He attached no further significance to the morphological feature. The characteristic...