Universal Chalcidoidea Database

Distribution references

Records of Sympiesis gordius Walker, 1848 in United States of America-Massachusetts:

Records 1 - 2 of 2
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Driesche, R.G. van; Clark, J.M.; Brooks, M.W.; Drummond, F.J. 1985, Comparative toxicity of orchard insecticides to the apple blotch leafminer, Phyllonorycter crataegella (Lepidoptera: Gracillariidae), and its eulophid parasitoid, Sympiesis marylandensis (Hymenoptera: Eulophidae). Journal of Economic Entomology 78(4):926-932    
Keywords: Biological control
Driesche, R.G. van; Taub, G. 1983, Impact of parasitoids on Phyllonorycter leafminers infesting apple in Massachusetts, USA. Protection Ecology 5(4):303-317