Monday, December 11, 2006 - 10:23 AM
0214

Preliminary assessment of generic limits, taxonomy, and phylogeny of the Indo-Australian crowned weevils (Coleoptera: Curculionidae: Cryptorhynchinae)

Gregory Peter Setliff, setl0003@umn.edu, University of Minnesota, Department of Entomology, 219 Hodson Hall, 1980 Folwell Ave, St. Paul, MN

The crowned weevils are a monophyletic assemblage of 7 genera that occur from the Philippines to the Solomon Islands, with the greatest species diversity centered on New Guinea. These genera are poorly delimited and the present state of their taxonomy is chaotic. To clarify their generic limits and interrelationships, a phylogenetic analysis based on internal and external adult morphology was performed. The ingroup was comprised of 75 species from Asytesta Pascoe, Cyamomistus Heller, Eudyasmus Pascoe, Glochinorrhinus Waterhouse, Nothotragopus Zimmerman, Panopides Pascoe, and Zygara Pascoe. The analysis was rooted with 5 outgroups from Cyamobolus Schoenherr and Cyamotrox Heller. A maximum parsimony analysis of 55 external characters revealed that three species are currently misplaced in Asytesta and should be transferred to other genera. Zygara, formerly in a different subfamily, is congeneric with Asytesta and forms a distinct species-group. This preliminary analysis suggests that Nothotragopus is congeneric with Panopides. Approximately 70 new species of Asytesta, 1 new species of Eudyasmus, and 2 new species of Panopides await description. These initial findings will be compared to results derived from both external and internal characters. Putative synapomorphies supporting the monophyly of the crowned weevil clade and each of its genera will be presented.


Species 1: Coleoptera Curculionidae Asytesta
Species 2: Coleoptera Curculionidae Panopides
Species 3: Coleoptera Curculionidae Zygara