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Askew, R.R. 1974, Insects from Bardsey Island. Entomologist's Gazette
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Askew, R.R.; Shaw, M.R. 1976, Chalcidoidea (Hymenoptera) at Abbot's Moss, Cheshire. Lancashire and Cheshire Fauna Society
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Badmin, J. 1991, Biology of Helleborus foetidus L. and the aphid Macrosiphum hellebori Theobald & Walton. Transactions of the Kent Field Club
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Chua, T.H. 1978, Pattern and influencing factors of emergence in Diaretiella rapae and its practices. Zeitschrift für Angewandte Entomologie
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Hamilton, P.A. 1973, The biology of Aphelinus flavus (Hym. Aphelinidae) a parasite of the sycamore aphid Drepanosiphum platanoides (Hemipt. Aphididae). Entomophaga
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Herting, B. 1972, Homoptera. A catalogue of parasites and predators of terrestrial arthropods. Section A. Host or Prey/Enemy.
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Commonwealth Agricultural Bureaux, Slough, England
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Herting, B. 1977, Hymenoptera. A catalogue of parasites and predators of terrestrial arthropods. Section A. Host or Prey/Enemy.
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Commonwealth Agricultural Bureaux, Institute of Biological Control
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Herting, B. 1977, Hymenoptera. A catalogue of parasites and predators of terrestrial arthropods. Section A. Host or Prey/Enemy.
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Commonwealth Agricultural Bureaux, Institute of Biological Control
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Jones, M.G. 1972, Cereal aphids, their parasites and predators caught in cages over oat and winter wheat crops. Annals of Applied Biology
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Jones, M.G.; Dean, G.J. 1976, Observations on cereal aphids and their natural enemies in 1972. Entomologist's Monthly Magazine
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Peck, O. 1963, A catalogue of the Nearctic Chalcidoidea (Insecta; Hymenoptera). Canadian Entomologist (Supplement)
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Thompson, W.R. 1958, A catalogue of the parasites and predators of insect pests. Section 2. Host parasite catalogue, Part 5.
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Walker, F. 1834, Monographia Chalciditum. (Continued.) Entomological Magazine
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(Parasitoid identification correct)
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