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Published online by Cambridge University Press: 31 May 2012
In the May, 1932, number of the Canadian Entomologist, G. Chagnon records observing an insect resembling an ichneumonid walking down the stem of an aquatic plant into the water.
This habit in the genus Agriotypus has been known for many years. These insects are parasitic in the cases of caddis flies, entering the water by walking down the surfaces of stones or plants to parasitize their hosts.