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Genus Ernobius

1018Beetle1 - Ernobius Anobiid Beetle? - Ernobius Anobiidae? - Ernobius granulatus Small Beetle - Ernobius Ernobius mollis Beetle - Ernobius Ptinidae? - Ernobius Ptinidae? - Ernobius
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
Superfamily Bostrichoidea (Carpet, Powder-post and Death-watch Beetles)
Family Ptinidae (Death-watch and Spider Beetles)
Subfamily Ernobiinae
Tribe Ernobiini
Genus Ernobius
Explanation of Names
Ernobius Thomson 1859
30 spp. in our area(1) (the number is likely to change: the genus is in bad need of revision)
~2.5-6 mm (American species)
Elytra without rows of punctures, 3 terminal segments of antennae much longer (2 to several times) as the intermediate segments, Antennae 11-segmented.
The genus Episernus (2 rare species in the West) is similar, but has the number of antennal segments reduced to 10, and the lateral border of the pronotum effaced in the anteriour third.
Holarctic; some species were introduced to other parts of the world with planted pines.
Bound to conifers. Larvae develop in wood, bark, cones, cone-like aphid galls, or in the pith of dry twigs. Place of larval development and host range depends on species. Little is known about habits of nearctic species.
Works Cited
1.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.