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Butterflies of Louisiana
http://www.npwrc.usgs.gov/resource/distr/lepid/bflyusa/la/toc.htm#swallowtai
Louisiana Grasses
http://www.csdl.tamu.edu/FLORA/lagrasses/lahome1.htm
Color-coded map. From the Department of Biology, Northeast Louisiana State University.
Pecan Spittlebug
http://www.agctr.lsu.edu/Subjects/guides/pests/pdfs/Pecans.pdf
Recommendations for control of these pecan insects.