Arhopalus asperatus is a species of beetle in the family Cerambycidae.Bezark, Larry G. A Photographic Catalog of the Cerambycidae of the World. Retrieved 7 July 2012. It was described by John Lawrence LeConte in 1859.
The beetles vary from 18 to 33 mm in length, and have antennae of around 50% to 75% of the body length.Arhopalus asperatus – A Common Longhorned Beetle Colorado Insects of Interest
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