Monday, December 11, 2006
D0143

A phylogenetic analysis of the lady beetles (Coleoptera: Coccinellidae) based on molecular data

Jose A. Giorgi, giorgi@bugs.ent.uga.edu1, Juanita A. Forrester, jforrester@bugs.ent.uga.edu1, Kelly B. Miller, kelly.miller@byu.edu2, Joseph V. McHugh, JMCHUGH@bugs.ent.uga.edu1, and Michael F. Whiting, michael_whiting@byu.edu3. (1) University of Georgia, Department of Entomology, 413 Biological Sciences Building, Athens, GA, (2) Brigham Young University, Department of Integrative Biology, 401WIDB, Provo, UT, (3) Brigham Young University, Integrative Biology, Department of Integrative Biology, 401 WIDB, Provo, UT

The species of Coccinellidae exhibit considerable diversity in dietary preference, including predators, herbivores and fungivores. During the past twenty years, several studies have attempted to understand the evolutionary causes and consequences of trophic shifts within the family. The validity of such studies in the absence of a phylogenetic framework has been repeatedly questioned. The present study is the first attempt to use a formal cladistic analysis to reconstruct the phylogeny of the major coccinellid lineages. Molecular sequence data from ribosomal (18S, 28S), nuclear protein-coding (wingless), and mitochondrial (COI) genes were used to generate a phylogenetic hypothesis that will provide a basis for understanding the ancestral food preference for Coccinellidae and for examining trophic shifts within the family. Implications for the current classification system are also discussed.


Species 1: Coleoptera Coccinellidae (ladybird beetles)