Barrett, C. F.; Westdal, P. H.; Richardson, H. P. (1965). "Biology of Pachygonatopus minimus Fenton (Hymenoptera: Dryinidae) a Parasite of the Six-spotted Leafhopper, Macrosteles fascifrons (Stål), in Manitoba". The Canadian Entomologist. 97 (2): 216–221. doi:10.4039/Ent97216-2. S2CID84449471.
George, J. A. (1959). "Note on Epigonatopus plesius (Fenton) (Hymenoptera: Dryinidae), a Parasite of the Six-Spotted Leafhopper, Macrosteles fascifrons (Stal), in Ontario". The Canadian Entomologist. 91 (4): 216–221. doi:10.4039/Ent91256-4. S2CID85070270.
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Barrett, C. F.; Westdal, P. H.; Richardson, H. P. (1965). "Biology of Pachygonatopus minimus Fenton (Hymenoptera: Dryinidae) a Parasite of the Six-spotted Leafhopper, Macrosteles fascifrons (Stål), in Manitoba". The Canadian Entomologist. 97 (2): 216–221. doi:10.4039/Ent97216-2. S2CID84449471.
George, J. A. (1959). "Note on Epigonatopus plesius (Fenton) (Hymenoptera: Dryinidae), a Parasite of the Six-Spotted Leafhopper, Macrosteles fascifrons (Stal), in Ontario". The Canadian Entomologist. 91 (4): 216–221. doi:10.4039/Ent91256-4. S2CID85070270.