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NOTES ON COLLECTING LEPIDOPTERA
Published online by Cambridge University Press: 31 May 2012
Extract
In collecting Catocalas at Ohio, Ill., I have found them, during July, invariably abundant upon Black Locust (Robinia Pseudacacia), which, at that time, exudes considerable sap from the holes made by borers. Last season I pinned rags, dipped in molasses, to three or four of these trees, and from the middle to the last of July obtained from them over thirty Catocalas of ten species.
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