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Pine Insects & Diseases


Southern Pine BeetleSouthern Pine Beetle
The southern pine beetle (Dendroctonus frontalis Zimmermann) is one of pine's most destructive insect enemies in the Southern United States, Mexico, and Central America. Because populations build rapidly to outbreak proportions and large numbers of trees are killed, this insect generates considerable concern among managers of southern pine forests.

European Pine Sawfly European Pine Sawfly
The European pine sawfly, Neodiprion sertifer (Geoffroy), is the most common sawfly found infesting pines in landscapes, ornamental nurseries and Christmas tree plantations. Sawfly larvae look like caterpillars but they are the larvae of primitive wasp-like insects. They are common from southwestern Ontario through New England and west to Iowa. This pest was accidentally introduced from Europe.
Pine Needle Scale Pine Needle Scale
The pine needle scale, Chionaspis pinifoliae (Fitch), is probably the most common armored scale found on conifers in the United States and Canada. The white, oystershell-shaped scales can completely cover needles, causing plant discoloration to needle and branch death.
spruce-iandd-spider-mite.gif Spruce Spider Mite
Despite its common name, the Spruce spider mite feeds on more than 40 species of conifers. Most often attacked are spruce (especially Alberta spruce), pine, juniper, fir, arborvitae, hemlock, taxus and false cypress. The mites have a similar appearance to those already discussed. Coloration varies from green to deep olive to brownish red.
White Pine Weevil White Pine Weevil
The white pine weevil is a native insect attacking eastern white pine.  In the eastern United States, the white pine weevil may attack at least 20 different tree species, including ornamentals. However, eastern white pine is the most suitable host for brood development.