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160 pp., 40 color plates. [ISBN 0-19-507983-3]
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Co., Boston. 128 pp. [ISBN 0-395-67072-1] <http://www.hmco.com/trade/>
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Mastervision, New York
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Hopkins University Press, Baltimore. 294 pp. [ISBN 0-8018-2938-0]
<http://jhupress.jhu.edu>
Opler, P.A. and V. Malikul. 1992. Peterson field guide to butterflies of eastern
North America. Houghton Mifflin Co., Boston. 396 pp. [ISBN 0-395-63279-X,
paper; O-395-36452-3, cloth] <http://www.hmco.com/trade/>
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A.A. Knopf, New York. 924 pp. [ISBN 0-394-51914-0]
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Society, A.E.S. Pamphlet #13, 80 pp.
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IUCN Red Data Book. IUCN (World Conservation Union), Cambridge, U.K. and Gland,
Switzerland. 401 pages, 8 color plates. [ISBN 2-88032-603-6]
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habitats. Academic Press, London. 450 pp. [ISBN 0-12-181370-3]
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annotated checklist. Kentucky State Nature Preserves Commission Scientific and
Technical Series 6:1-220.
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butterfly. Natural history Museum of Los angeles County, Science Series No. 38.
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Paper of the IUCN Species Survival Commission No. 8, Gland Switzerland. 173 pp.
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Opler, P.A. 1976. The parade of passing species: a survey of extinctions in the U.S.
Science Teacher 43(9):30-34.
Pollard, E., M.L. Hall, and T.J. Bibby. 1986. Monitoring the abundance of butterflies:
1976-1985. Institute of Terrestrial Ecology, Monks Wood Experiment Station, Abbots
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Chapman & Hall, London.
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168-170 in E. T. LaRoe, G. S. Farris, C. E. Puckett, P. D. Doran, and M. J. Mac,
editors. Our living resources: a report to the nation on the distribution,
abundance, and health of U.S. plants, animals, and ecosystems. National
Biological Service, Washington, D.C.
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363 pp. [ISBN 0-412-56970-1]
Pyle, R.M., M. Bentzien, and P. Opler. 1981. Insect conservation. Annual Review of
Entomology 26:233-258.
Swengel, A.B. and P.A. Opler, editors. 1993-1996. NABA-Xerces Fourth of July
Butterfly Counts. North American Butterfly Association, Morristown,
New Jersey.
Swengel, A.B. and S.R. Swengel. 1995. The tall-grass butterfly community. Pages
174-175 in E. T. LaRoe, G. S. Farris, C. E. Puckett, P. D. Doran, and M. J.
Mac, editors. Our living resources: a report to the nation on the distribution,
abundance, and health of U.S. plants, animals, and ecosystems. National
Biological Service, Washington, D.C.
Wells, S.M., R.M. Pyle, and N.M. Collins, compilers. 1983. The IUCN Invertebrate
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[ISBN 2-88032-602-X]
Austin, Bailowitz, Cary, Curtis, Ellis, Ely, Emmels, Freeman, Gillette, Hinchliff, Holland, Kendall, Kendall/Mcguire, Kohler, Kondla, Marrone, Mattoon, McGuire/Rickard, Mullins, Opler, Pelham, Pyle, Rosche, Savage, Shepard, Spomer, Stanford, Toliver/Holland, Warren/Brock.