Pityophthorus confertus Swaine (Coleoptera: Scolytidae) infests many species of pine throughout the West. It commonly occurs in Pinus contorta, P. ponderosa , and P. jeffreyi ; in addition, it has been taken from P. edulis , P. monophylla , P. attenuata , P. coulteri , and P. lambertiana . Contrary to published accounts of P. confertus being taken from fir trees (Blackman 1928, Chamberlin 1958), it occurs only in the pines.
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Amman et al. (1974) studied this question.
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