Pityophthorus confertusSwaine (Coleoptera: Scolytidae) infests many species of pine throughout the West. It commonly occurs in Pinus contorta,P. ponderosa, andP. jeffreyi; in addition, it has been taken fromP. edulis,P. monophylla,P. attenuata,P. coulteri, andP. lambertiana. Contrary to published accounts ofP. confertusbeing taken from fir trees (Blackman 1928, Chamberlin 1958), it occurs only in the pines.