United Kingdom:
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Boucek, Z.; Graham, M.W.R. de V. 1978, Chalcidoidea. (In: Fitton, M.G.; Graham, M.W.R. de V.; Boucek, Z.R.J.; Fergusson, N.D.M.; Huddleston, T.; Quinlan, J.; Richards, O.W. A check list of British Insects, Second Edition.) Handbooks for the Identification of British Insects
XI(4):91
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Trjapitzin, V.A. 1989, Parasitic Hymenoptera of the Fam. Encyrtidae of Palaearctics. Opredeliteli po Faune SSSR
158:199
Zoologicheskim Institutom Akademii Nauk SSR, Leningrad
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Walker, F. 1837, Monographia Chalciditum. (Continued.) Entomological Magazine
5(1):39
(Parasitoid identification correct)
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Russia:
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Trjapitzin, V.A.; Manukyan, A.R.; Sakhnov, N.I. 1995, Palaearctic species of the genus Syrphophagus (Hymenoptera, Encyrtidae) reared from syrphids (Diptera, Syrphidae). International Journal of Dipterological Research
6(1):37
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Sweden:
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Hedqvist, K.-J. 2003, Katalog över svenska Chalcidoidea. Entomologisk Tidskrift
124(1-2):86
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