Species Corthylus columbianus

Classification · Explanation of Names · Range · Food · Life Cycle · Internet References · Works Cited

maybe Scolytinae? - Corthylus columbianus

Anisandrus dispar? - Corthylus columbianus

Curculionidae – Bark and Ambrosia Beetles – Scolytinae – Pityophthorini – Corthylina – Corthylus columbianus - Corthylus columbianus

Classification

Kingdom Animalia (Animals)

Phylum Arthropoda (Arthropods)

Subphylum Hexapoda (Hexapods)

Class Insecta (Insects)

Order Coleoptera (Beetles)

Suborder Polyphaga

No Taxon (Series Cucujiformia)

Superfamily Curculionoidea

Family Curculionidae (Snout and Bark Beetles)

Subfamily Scolytinae (Bark and Ambrosia Beetles)

Tribe Corthylini

Subtribe Corthylina

Genus Corthylus

Species columbianus (Corthylus columbianus)

Explanation of Names

Corthylus columbianus Hopkins 1894

Range

e. US (VT-MN-SD to FL-AL)(1)

Food

Castanea dentata, Quercus (Fagaceae), also Aceraceae, Magnoliaceae, Platanaceae, and Ulmaceae

Life Cycle

Holes are bored straight into the sapwood until the tunnel nears the heartwood, then it turns. Entrance holes are clean cut and from 1/32 to 1/16" in diameter. Short tunnels from main tunnel are excavated at intervals. Eggs are laid in the chambers and the larvae live and develop in them. The larval food is a yeast of the species Pichia. It is stored and transported by prothoracic mycetangia possessed by the male beetle.(2)

Overwinter as pupae or adults in the most recent galleries(2)

2-3 generations per year(2)

Internet References

Species page(1)

The Columbian Timber Beetle, Corthylus columbianus (Coleoptera: Scolytidae). II. Fungi and Staining Associated with the Beetle in Soft Maple

Works Cited

1.	Atkinson T.H. (200_‒2023) Bark and ambrosia beetles of the Americas

2.	Eastern Forest Insects Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.

Contributed by v belov on 5 February, 2013 - 9:11am
Additional contributions by Mike Quinn, Marci Hess
Last updated 3 August, 2023 - 3:18pm

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