Species Insects & ArthropodsRibbed Pine Borer

Ribbed Pine Borer

Rhagium inquisitor

CommonInsect & Arthropod
Illustration of Ribbed Pine Borer (Rhagium inquisitor)

The Ribbed Pine Borer is a stout longhorn beetle with grayish-brown elytra bearing coarse ribs and dark irregular banding that blends well with rough tree bark. Adults overwinter as mature beetles inside pupal chambers and emerge early in spring — one of the first longhorns active each year. They are frequently found basking on dead pine logs and stumps.

Habitat
Conifer forests, especially with dead and dying pines
Diet
Larvae: dead and decaying conifer wood. Adults: pollen and little else
How common
Common

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