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Bakke, A. 1963, Studies on the spruce-cone insects Laspeyresia strobilella (L.) (Lepidoptera: Tortricidae), Kaltenbachiola strobi (Winn.) (Diptera: Itonidae) and their parasites (Hymenoptera) in Norway. Biology, distribution and diapause. Reports of the Norwegian Forest Research Institute 19(67):1-151
Herting, B. 1978, Neuroptera, Diptera, Siphonaptera. A catalogue of parasites and predators of terrestrial arthropods. Section A. Host or Prey/Enemy. 5:23
Commonwealth Agricultural Bureaux, Commonwealth Institute of Biological Control