Ironclad ID: Tool for Diagnosing Ironclad and Cylindrical Bark Beetles (Coleoptera: Zopheridae) of North America north of Mexico
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Genus: Neotrichus

Diagnostic Features
  • Description: Body cylindrical. Antennae 11-segmented with a distinct, 2-segmented club. Antennal setation sparse. Antennomere 3 distinctly elongate (at least twice as long as 4). Subantennal grooves short to absent. Eyes round, well-developed, facets coarse. Pronotum subquadrate, disc with small, raised, dense tubercles. Pronotal lateral margins distinctly serrate, with a mid-lateral secretory pore, difficult to see. Procoxal cavities open. Metacoxae narrowly separated, separation less than metacoxal length. Elytra with striae composed of alternating weak punctures and tubercles. Abdominal ventrites 1-3 fused. Tarsal formula apparently 3-3-3. Dorsal surface with small, bristle-like, erect, golden setae. Body usually encrusted with dirt or debris.
  • Similar genus/genera: The genus Neotrichus superficially resembles the genus Endeitoma. The 4-4-4 tarsi, narrower antennal club, abdominal ventrites 1-3 not fused, and distribution readily distinguish Endeitoma.
Known Distribution
  • Hawai'i, USA
  • Neotrichus latiusculus has been collected from under the bark of dead Pipturus and Terminalia.

  • Abundance: Rare
North American Species (1)

Neotrichus latiusculus (Fairmaire, 1881)

  • This genus is found throughout the Australo-Pacific region. It has likely been introduced into the United tates.
Selected References  

Neotrichus latiusculus
© N.P. Lord

© 2011-2015 Lord, N.P., Nearns, E.H., and K.B. Miller
The University of New Mexico and Center for Plant Health Science and Technology, USDA, APHIS, PPQ.