Journal Article Trends Observed in Fall Migrant Monarch Butterflies (Lepidoptera: Nymphalidae) East of the Appalachian Mountains at an Inland Stopover in Southern Pennsylvania over an Eighteen Year Period Get access Gayle Steffy Gayle Steffy 1Corresponding author, e-mail: Gsteffy1@yahoo.com. Search for other works by this author on: Oxford Academic Google Scholar Annals of the Entomological Society of America, Volume 108, Issue 5, September 2015, Pages 718–728, https://doi.org/10.1093/aesa/sav046 Published: 05 August 2015 Article history Received: 25 January 2015 Accepted: 29 April 2015 Published: 05 August 2015
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