Common NameSpruce BeetleSeasonalityAdults flight period is from late May through July.IdentificationThe frons of this species has coarse punctures and close granules. Its male genitalia, galleries and host allow it to be distinguished from its closest ally, D. murrayanae.
Scientific NameDendroctonus rufipennisCommon Name
Spruce Beetle
Habitat
Weak, overmature or downed trees with a DBH more than 20 cm.; during outbreaks any spruce tree.
Seasonality
Adults flight period is from late May through July.
Identification
The frons of this species has coarse punctures and close granules. Its male genitalia, galleries and host allow it to be distinguished from its closest ally, D. murrayanae.
Life History
This species can overwinter in any life stage. Adult hibernation has been given credit for allowing this species to become acclimatized to colder weather. Activity will begin in the spring as the local weather…
This species can overwinter in any life stage. Adult hibernation has been given credit for allowing this species to become acclimatized to colder weather. Activity will begin in the spring as the local weather begins to warm. Life cycles can range from 1 to 4 years depending on local climate, a two year lifecycle is most common. Galleries are excavated in the phloem parallel to the grain of the wood. These galleries average between 13 to 23 cm, this species does more engraving than most Dendroctonus species. After the attack mating will occur and oviposition will begin within a week. Approximately 115 eggs will be laid per gallery, egg niches are excavated with longer niches containing more eggs. The eggs are partitioned from the main gallery by frass. Incubation may last up to 4 weeks at higher elevations. The newly hatched larvae will feed in groups and then overwinter. The larvae complete development the following spring and will then pupate for 10 to 15 days. New adults will then emerge and begin to excavate new galleries.
Conservation
This species is considered a major forest pest throughout its range.
Diet Info
This species feeds on a wide range of Picea spp. throughout its range.
Range
This beetle is found across Canada. It is also found in the US in Alaska, Arizona, California, Colorado, Idaho, Maine, Michigan, Minnesota, Montana, New Hampshire, New Mexico, New Yprk, Oregon, Pennsylvania, South…
This beetle is found across Canada. It is also found in the US in Alaska, Arizona, California, Colorado, Idaho, Maine, Michigan, Minnesota, Montana, New Hampshire, New Mexico, New Yprk, Oregon, Pennsylvania, South Dakota, Utah, Washington and West Yirginia. It has been introduced in Ireland.
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Citation
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Page Citation for Dendroctonus rufipennis
Page Citation
"Species Details - Dendroctonus rufipennis, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4716. Accessed 12 Mar. 2025.
References
AuthorBright, D. E. and R. E. Skidmore
TitleA Catalog of Scolytidae and Platypodidae (Coleoptera)
Publication Date1997
AuthorWood, S. L.
TitleThe Bark and Ambrosia Beeltes of North and Central America (Coleoptera: Scolytidae): A Taxonomic Monograph
Publication Date1982
Series TitleGreat Basin Naturalist Memoirs
Volume6
Pages150-203
Specimen Information
There are 8 specimens of this Species.
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8 results plotted on map in 8 markers. Note: Only records with latitude and longitude coordinates are plotted on map.
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Colin-Cornwall Lakes Wildland Park, Esker LakeCollected ByHilchie, G. J.; Ash, L.; Hilchie, D. N.Date Collected2002-07-11