Project 2323: J. N. Zahniser, C. H. Dietrich. 2015. Phylogeny, evolution, and historical biogeography of the grassland leafhopper tribe Chiasmini (Hemiptera: Cicadellidae: Deltocephalinae). Zoological Journal of the Linnean Society. 175 (3):473-495.
Specimen: Exitianus nanus (unvouchered)

Abstract

The phylogeny, evolution, and biogeography of the grassland-associated leafhopper tribe Chiasmini (21 genera, 316 species) were investigated using phylogenetic analyses of two different data sets, one including 81 taxa and 3000 aligned nucleotide positions from the NADH dehydrogenase subunit 1 (ND1), histone H3, 28S rDNA D2, and cytochrome c oxidase subunit II (COII) gene regions, and one including 31 taxa and 3610 aligned nucleotide positions from the 28S rDNA D2–D10 and histone H3 gene regions. The results were equivocal regarding the monophyly of the tribe, apparently because of low phylogenetic signal towards the base of the tree; however, analyses of 81 taxa recovered two well-supported clades that together included all sampled Chiasmini. Clade I was resolved as (Leofa (Nephotettix, Exitianus)); clade II included the remaining 13 sampled genera. Most relationships between genera and species of Chiasmini were strongly supported. Alternative scenarios previously proposed for the origin of the Exitianus obscurinervis species group in the New World were examined through phylogenetic dating and biogeographic analyses. A sister-group relationship between the Exitianus nanus and Exitianus obscurinervis species groups was recovered, and the results were consistent with a long-distance dispersal event from either the Afrotropical region or the Pacific islands into South America at a maximum of 34.3 Mya, and subsequent invasion and diversification of the group in North America at a maximum of 17.9 Mya. For the primarily North American genus Athysanella, the largest genus of the tribe (137 spp.), the results indicate that some of the previously recognized subgenera are not monophyletic. Observations on the remarkable diversity in head shape and other morphological characters are made and compared with other grassland-inhabiting tribes of Deltocephalinae. © 2015 The Linnean Society of London


Read the article »

Article DOI: 10.1111/zoj.12292

Project DOI: 10.7934/P2323, http://dx.doi.org/10.7934/P2323
This project contains
  • 1 Media
  • 2 Documents
  • 1 Taxon
  • 1 Specimen
Total size of project's media files: 16.81k

Download Project SDD File
Currently Viewing:
MorphoBank Project 2323
  • Creation Date:
    24 November 2015
  • Publication Date:
    30 November 2015
  • Project views: 9423

    This research
    supported by

    Authors' Institutions

    • University of Illinois Urbana-Champaign

    • Illinois Natural History Survey



    Members

    member name taxa specimens media
    MorphoBank Curator
    Project Administrator
    Last logged in 12/14/15
    111
    Maureen Admin
    Full membership
    Last logged in 01/08/20
    000


    Project has no matrices defined.



    Project views

    type number of views Individual items viewed (where applicable)
    Total project views9423
    Project overview1825
    Documents list1089
    Media views3218Media search (2766 views); M406166 (452 views);
    Taxon list1495
    Specimen list1194
    Bibliography602




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project201
    Project downloads196
    Document downloads5Appendix S1. Nexus file for 81-taxa analyses (3 downloads); Appendix S2. Nexus file for 31-taxa analyses. (2 downloads);