Neanthophylax tenebrosus is a species in the longhorn beetle family Cerambycidae, found in United States. The adult beetles feed on mountain hemlock and red fir.
Subspecies
These subspecies belong to the species Neanthophylax tenebrosus:
Neanthophylax tenebrosus nigrolineatus <small>(Van Dyke, 1917)</small> (Canada and United States)
Neanthophylax tenebrosus orientalis <small>Linsley & Chemsak, 1972</small> (United States)