Poliaenus obscurus is a species of beetle in the family Cerambycidae. It was described by Fall in 1910.BioLib.cz - Poliaenus obscurus. Retrieved on 8 September 2014.
Subspecies Poliaenus obscurus albidus Linsley, 1933 Poliaenus obscurus obscurus (Fall, 1910) Poliaenus obscurus ponderosae Linsley, 1935 Poliaenus obscurus schaefferi Linsley, 1933
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