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12 Wilkinson: Cercyonis at light Vol. 20, no. 1
Jude Le Gare, M., & W. Hovanitz, 1951. Genetic and ecologic analyses of wild
populations in Lepidoptera. II. Color pattern variation in Melitaea chalcedona.
Wasmann Jour. Biol., 9(3): 257-310. McGugan, B. M., 1958. Forest Lepidoptera of Canada. Vol. 1. Papilionidae to
Arctiidae. Canad. Dept. Agric. Publ. 1034: 1-76. Plain, C, 1964. Writers Envision Automated Library. San Diego Union. May (day
of issue unknown). Powell, J. A., 1965. Persona] communication. Prentice, R. M., 1962. Forest Lepidoptera of Canada. Vol. 2. Nycteolidae to
Liparidae. Canad. Dept. Forestry, Bull. 128: 77-282. 1963. Forest Lepidoptera of Canada. Vol. 3. Lasiocampidae to Geometridae.
Canad. Dept. Forestry, Publ. 1013: 283-543. Rohle, F. J., 1963a. Classification of Aedes by numerical taxonomic methods. Ann.
Ent. Soc. Amer., 56(6): 798-804. 1963b. Congruence of larval and adult classifications in Aedes. Systematic Zoology,
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relationships. Univ. Kansas Sci. Bull. 38, Part 11(22): 1409-1438. Sokal, R. R., & P. H. A. Sneath, 1963. Principles of Numerical Taxonomy. W. H.
Freeman & Co., San Francisco. Ulam, S. M., 1964. Computers. Sci. Amer., 211(3): 202-216. Urness, D. B. (IBM Systems Engineer), 1964. Personal communication.
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CERCYONIS PEGALA NEPHELE (SATYRIDAE) AT FLUORESCENT LIGHT
Having read the recent notices of Rhopalocera taken at light, both in the Journal of the Lepidopterists Society and the Entomologist's Record and Journal of Variation, I was most interested to find another species attracted to fluorescent light. While collecting Noctuidae in the company of John Newman at Morenci, Michigan, on the evening of July 31, 1965, using a 15-watt "BL" fluorescent black light suspended before a white sheet on a frame, a male Cercyonis pegala nephele (Kirby) was seen to fly at the lighted sheet and react in the same manner as a nocturnal insect. It was obviously attracted by the light, and soon settled upon the ground flap.
Due to the location of the apparatus and other circumstances, it is safe to say that the butterfly was not mechanically disturbed from its resting place, but was actually drawn by the lamp. We had seen the species occasionally while collecting in the afternoon. The specimen was taken at approximately 10:30 P.M., and a light rain of over two hours' duration had just ceased, reinforcing the certainty of attraction.
Ronald S. Wilkinson, 2337 Hamilton Rd., Okemos, Michigan
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