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Pine Sawyer Beetle (Ergates spiculatus)

Order: Coleoptera (ko-lee-OP-ter-a) (Info)
Family: Cerambycidae
Genus: Ergates
Species: spiculatus


This bug has been reportedly found in the following regions:

Florence, Arizona
Hereford, Arizona
Surprise, Arizona
Cathedral City, California
East Shore, California
Gualala, California
Knights Landing, California
Lincoln, California
Oakland, California
Orinda, California
San Simeon, California
Santa Cruz, California
Monroe, Connecticut
Oakdale, Connecticut
Mount Airy, Maryland
Duluth, Minnesota
Sanbornton, New Hampshire
Flemington, New Jersey
Bend, Oregon
Eugene, Oregon
Gold Hill, Oregon
Newberg, Oregon
Barnet, Vermont
Hoquiam, Washington
Naches, Washington
Nine Mile Falls, Washington
Show all

Members' Notes:


On Aug 13, 2006, Scorpioangel from Gold Hill, OR (Zone 7a) wrote:

Description: This is the largest beetle in western North America. They can reach 65 mm in length. They are slender and flattened. Elytra are reddish brown with a few distinct ridges. The pronotum and head are much darker. The margins of the thorax have a few large spines and usually several smaller ones. Antennae are over half of the body length and tend to lay back along the length of the body. The eyes partially surround the base of the antennae. The mandibles are fairly large.

Habits: Adults lay eggs in crevices in the bark of the snags, logs, and stumps of Douglas fir, pines, firs, and redwoods. Larvae excavate large tunnels within the sapwood and heartwood. Although detrimental to the logging industry, they are a naturally occurring element of western forest ecology. La... read more