Parasitoids of two spruce sawflies in the genus Pikonema (Hymenoptera: Tenthredinidae) - Houseweart, Mark W.; Maine Agricultural Experiment Station; University of Maine at Orono. School of Forest Resources (Orono, Me. : University of Maine at Orono, 1984)
Tables.
Key to references and citations: p. 29-32.
Mode of access: Internet.
Keywords: Green-headed spruce sawfly; Yellow-headed spruce sawfly; Spruce -- Diseases and pests