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Molecular phylogenetics and evolution of host plant



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Molecular Phylogenetics and Evolution 37 2005 117 131 www elsevier com locate ympev Molecular phylogenetics and evolution of host plant use in the Neotropical rolled leaf hispine beetle genus Cephaloleia Chevrolat Chrysomelidae Cassidinae Duane D McKenna Brian D Farrell Harvard University Museum of Comparative Zoology 26 Oxford Street Cambridge MA 02138 USA Received 22 October 2004 revised 20 May 2005 Available online 27 July 2005 Abstract Here we report the results of a species level phylogenetic study of Cephaloleia beetles designed to clarify relationships and patterns of host plant taxon and tissue use among species Our study is based on up to 2088 bp of mtDNA sequence data Maximum parsimony maximum likelihood and Bayesian methods of phylogenetic inference consistently recover a monophyletic Cephaloleia outside of a basal clade of primarily palm feeding species the Arecaceae feeding clade and C irregularis In all three analyses the Arecaceae feeding clade includes Cephaloleia spp with unusual morphological features and a few species currently placed in other cassidine genera and tribes All three analyses also recover a clade that includes all Zingiberales feeding Cephaloleia and most Cephaloleia species the Zingiberales feeding clade Two notable clades are found within the Zingiberales feeding clade One is comprised of beetles that normally feed only on the young rolled leaves of plants in the families Heliconiaceae and Marantaceae the Heliconiaceae Marantaceae feeding clade The other is comprised of relative host tissue generalist primarily Zingiberales feeding species the generalist feeding clade A few species in the generalist feeding clade utilize Cyperaceae or Poaceae as hosts Overall relatively basal Cephaloleia e g the Arecaceae clade feed on relatively basal monocots e g Cyclanthaceae and Arecaceae and relatively derived Cephaloleia e g the Zingiberales feeding clade feed on relatively derived monocots mostly in the order Zingiberales Zingiberales



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