Identification and impact of hyperparasitoids and predators affecting Cyzenis albicans (Tachinidae), a recently introduced biological control agent of winter moth (Operophtera brumata L.) in the northeastern U.S.A.

Broadley, H. J., Kelly, E. A., Elkinton, J. S., Kula, R. R., Boettner, G. H., (2018). Biological Control 121, 99-108. Elsevier Ltd, Oxford, UK. English language

Distribution and parasitism of winter moth, Operophtera brumata (Lepidoptera: Geometridae), in western Oregon.

Kimberling, D. N., Miller, J. C., Penrose, R. L., (1986). Environmental Entomology 15(5), 1042-1046. English language

Final-instar larvae of native pupal parasites and hyperparasites of Operophtera spp. (Lepidoptera: Geometridae) on southern Vancouver Island.

Humble, L. M., (1985). Canadian Entomologist 117(5), 525-534. English language

Tachinids as parasites of injurious insects.

Rikhter, V. A., (1975). Zashchita Rastenii(No.2), 46-48. Russian language

Der Parasitenkomplex des Kleinen Frostspanners (Operophtera brumata L.) (Lep., Geometridae) unter besonderer Beruck-sichtigung der Kokonparasiten. I. Teil. / The parasite complex of the Winter Moth (Operophtera brumata L.) (Lep., Geometridae) with particular reference to pupal parasites Part I.

Sechser, B., (1970). Zeitschrift fur Angewandte Entomologie 66(1), 1-35. Paul Parey, Berlin, Germany. German language