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The beetles are attracted strongly to blowdowns, cull logs, and freshly-cut logs. Outbreaks of the spruce beetle, a transcontinental North American species, have been devastating to white and Engelmann spruces throughout western North America, from Arizona to Alaska, while smaller outbreaks have occurred in Alberta and Saskatchewan. [7]
Binomial name. Monochamus scutellatus. (Say, 1824) Subspecies. M. s. oregonensis. M. s. scutellatus. Monochamus scutellatus, commonly known as the white-spotted sawyer or spruce sawyer or spruce bug or a hair-eater, [1] is a common wood-boring beetle found throughout North America. [2] It is a species native to North America.
Morphology. Adults are usually 4.0–5.5 millimetres (0.16–0.22 in) long, cylindrical and robust, black or brownish-black. Elytral declivity is slightly shiny, with four teeth on each margin side. The third tooth is the biggest and club like on its top. The egg is yellowish-white. The larva is white and legless.
A bark beetle is the common name for the subfamily of beetles Scolytinae. [1] Previously, this was considered a distinct family (Scolytidae), but is now understood to be a specialized clade of the "true weevil " family (Curculionidae). Although the term "bark beetle" refers to the fact that many species feed in the inner bark (phloem) layer of ...
Dendroctonus pseudotsugae. Dendroctonus pseudotsugae, the Douglas-fir beetle, is a species of bark beetle found in western North America. Three subspecies exist that correspond to the subspecies of Douglas-fir. The beetles also infest downed Larch trees. [ 1] Outbreaks often occur in conjunction with drought, root rot diseases, overcrowding ...
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Choristoneura fumiferana. Choristoneura fumiferana, the eastern spruce budworm, is a species of moth of the family Tortricidae native to the eastern United States and Canada. The caterpillars feed on the needles of spruce and fir trees. Eastern spruce budworm populations can experience significant oscillations, with large outbreaks sometimes ...
September 10, 2024 at 5:02 AM. An old nemesis of North Carolina's pine forests is having a resurgence in other Southeastern states as southern pine beetle outbreaks are decimating forest stands in ...