Geographic variation in Pemphigus populitransversus (Insecta: Aphididae)*†

Journal Article Geographic variation in Pemphigus populitransversus (Insecta: Aphididae) Get access ROBERT R. SOKAL, ROBERT R. SOKAL 1Department of Ecology and Evolution, State University of New York at Stony Brook, Stony Brook, New York 11794, U.S.A Search for other works by this author on: Oxford Academic Google Scholar BRUCE RISKA BRUCE RISKA 1Department of Ecology and Evolution, State University of New York at Stony Brook, Stony Brook, New York 11794, U.S.A Search for other works by this author on: Oxford Academic Google Scholar Biological Journal of the Linnean Society, Volume 15, Issue 3, May 1981, Pages 201–233, https://doi.org/10.1111/j.1095-8312.1981.tb00760.x Published: 14 January 2008 Article history Accepted: 01 November 1980 Published: 14 January 2008