Genus: Microprius

• Description: Antennae 11-segmented with a distinct, 2-segmented club. Antennal setation sparse. Subantennal grooves long, reaching posterior margin of eye. Eyes elongate, well-developed, facets fine. Pronotal disc with network of connecting, bifurcating carinae. Pronotal lateral margins subparallel, minutely serrate, slightly explanate. Procoxal cavities narrowly open. Metacoxae narrowly separated, separation less than metacoxal length. Elytra carinate, with 9 rows of regularly spaced, deep punctures. Tarsal formula 4-4-4. Dorsal surface with minute setae.

• Similar genera: The genus Microprius is extremely similar to Bitoma, and seems to differ only by the length of antennal groove on the ventral side of the head (short to absent in Bitoma).

• Southwestern (CA) and Northeastern (VA) USA.

• This species is widespread throughout the Old World and will likely be found throughout the US.

• Microprius rufulus has been found at UV/MV light and from under the bark of a number of trees.
  
  
• Abundance: Rare.

• Ivie (2002)
• Ivie et al. (2001b)
• Motschulsky (1863)