Adelgid and scale insect guilds on hemlock and pine

Abstract

Five piercing and sucking insects which were accidentally introduced from Asia during this century, together with one native species, have become very serious pests of two important forest tree species in the northeastern United States. Two armored scales, Fiorinia externa Ferris and Nuculaspis tsugae (Marlatt), and an adelgid, Adelges tsugae Annand, attack eastern hemlock, Tsuga Canadensis Carriere (Fig. 1). A margarodid scale, Matsucoccus resinosae Bean and Godwin, and two adelgids, Pineus boerneri Annand and Pineus coloradensis (Gillette), attack red pine, Pinus resinosa Aiton (Fig. 2).

Parent Publication

• Forest Insect Guilds: Patterns of Interaction with Host Trees

Citation

McClure, Mark S. 1991. Adelgid and scale insect guilds on hemlock and pine. In: Baranchikov, Yuri N.; Mattson, William J.; Hain, Fred P.; Payne, Thomas L., eds. Forest Insect Guilds: Patterns of Interaction with Host Trees; 1989 August 13-17; Abakan, Siberia, U.S.S.R. Gen. Tech. Rep. NE-153. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 256-270.