University of Alberta Museums Search

Common NameWestern Pine Beetle SeasonalityFlight period is from early May through June. This may be extended if conditions remain warm. IdentificationDeclivity is moderately steep, pubescent and has weak, granulate punctures on the interstriae. Depressions are found on the declivity between the first and third striae. The frons has a median groove that extends from the epistomal process to the upper level of the eyes. Usually very dark brown and between 2.0 and 4.7 mm. Closest ally is D. frontalis Zimmermann.

Common NameLodgepole Pine Beetle SeasonalityFlight period is from late June through to early September. IdentificationThe frons has fine punctures with sparse granules. The pronotum has coarse punctures. Has a narrow epistomal process. The declivity is steep and convex. The striae on the declivity are weak impressions and have minute punctures on the declivity. This species has distinct male genitalia. Size ranges from 5.0 mm to 7.3 mm. Pronotum is dark brown and elytra are reddish brown. The distinct punctures on the frons and pronotum allow it to be distinguished from D. punctatus. The distinct frons, male genitalia and galleries distinguish it from D. rufipennis.

Common NameMountain Pine Beetle SeasonalityFlight period begins in mid July and lasts until late August. This may vary with local climates. IdentificationThere is no frontal groove on the frons. The pronotum has coarse, closely spaced punctures that may have granules. The elytral declivity is dull and may have small granules. It may look similar to D. jeffreyi Hopkins, but pronotal features and smaller size distinguish it. It may also look similar to D. adjunctus Blandford.

Common NameDouglas Fir Beetle SeasonalityFlight period is from early April to early September. IdentificationThe frons is distinct with fine punctures and granules. The pronotum is finely punctured. The declivity has punctures on the interstriae. The above characters as well as the distribution allow D. pseudotsugae/i> to be distinguished from D. simplex/i>.