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Genus Colydium

Colydium robustum Colydium lineola 4.5mm Beetle - Colydium lineola Bothrideridae ? - Colydium lineola Colydium nigripenne Long, grooved-winged beetle - Colydium lineola Zopherinae, Ironclad Beetle, Colydium perhaps lineola  - Colydium lineola Colydium lineola
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Cucujiformia)
Superfamily Tenebrionoidea
Family Zopheridae (Ironclad Beetles)
Subfamily Colydiinae (Cylindrical Bark Beetles)
Tribe Colydiini
Genus Colydium
Explanation of Names
Colydium Fabricius 1792
Greek 'sheath'(1)
Numbers
5 spp. in our area, 30 in the New World(2)
Range
Holarctic & Neotropical(2); in our area, BC & forests across the US(3)(4)
Habitat
under the bark of various dead trees, often in bark beetle galleries(4)
Food
probably bark beetle larvae(4)
Internet References
Works Cited
1.An illustrated descriptive catalogue of the Coleoptera or beetles (exclusive of the Rhynchophora) known to occur in Indiana.
Blatchley, W. S. 1910. Indianapolis,Nature Pub. Co.
2.Colydiine genera (Coleoptera: Zopheridae: Colydiinae) of the New World: A key and nomenclatural acts 30 Years in the making.
Ivie, M.A., N.P. Lord, I.A. Foley and S.A. Ślipiński. 2016. The Coleopterists Bulletin 70(4): 755–788.
3.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.
4.Lord N.P., Nearns E.H., Miller K.B. (2011-2013) Ironclad ID