Reference:
Identification key to the subfamilies of Ichneumonidae (Hymenoptera), Gavin Broad, Dept. of Entomology, The Natural History Museum, Cromwell Road, London SW7 5BD, UKURL:
http://www.nhm.ac.uk/resources-rx/files/ich_subfamily_key_2_11_compressed-95113.pdfLiterature
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