Project 423: G. Giribet, G. D. Edgecombe, W. C. Wheeler, C. Babbitt. 2002. Phylogeny and Systematic Position of Opiliones: A Combined Analysis of Chelicerate Relationships Using Morphological and Molecular Data. Cladistics. 18 (1):5-70.
Specimen: Nuncia sp. (unvouchered)

Abstract

The ordinal level phylogeny of the Arachnida and the suprafamilial level phylogeny of the Opiliones were studied on the basis of a combined analysis of 253 morphological characters, the complete sequence of the 18S rRNA gene, and the D3 region of the 28S rRNA gene. Molecular data were collected for 63 terminal taxa. Morphological data were collected for 35 exemplar taxa of Opiliones, but groundplans were applied to some of the remaining chelicerate groups. Six extinct terminals, including Paleozoic scorpions, are scored for morphological characters. The data were analyzed using strict parsimony for the morphological data matrix and via direct optimization for the molecular and combined data matrices. A sensitivity analysis of 15 parameter sets was undertaken, and character congruence was used as the optimality criterion to choose among competing hypotheses. The results obtained are unstable for the high-level chelicerate relationships (except for Tetrapulmonata, Pedipalpi, and Camarostomata), and the sister group of the Opiliones is not clearly established, although the monophyly of Dromopoda is supported under many parameter sets. However, the internal phylogeny of the Opiliones is robust to parameter choice and allows the discarding of previous hypotheses of opilionid phylogeny such as the “Cyphopalpatores” or “Palpatores.” The topology obtained is congruent with the previous hypothesis of “Palpatores” paraphyly as follows: (Cyphophthalmi (Eupnoi (Dyspnoi + Laniatores))). Resolution within the Eupnoi, Dyspnoi, and Laniatores (the latter two united as Dyspnolaniatores nov.) is also stable to the superfamily level, permitting a new classification system for the Opiliones.


Read the article »

Project DOI: 10.7934/P423, http://dx.doi.org/10.7934/P423
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 1 Document
  • 61 Taxa
  • 1 Specimen
  • 253 Characters
Total size of project's media files: 482.58k

Download Project SDD File
Total scored cells: 12393
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 253
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 540
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:253/0
Currently Viewing:
MorphoBank Project 423
  • Creation Date:
    17 October 2010
  • Publication Date:
    13 February 2011
  • Matrix downloads: 20

    Authors' Institutions

    • Harvard University

    • American Museum of Natural History (AMNH)

    • Australian Museum



    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    MorphoBank Curator
    Project Administrator
    60012530012393
    (10242, 0, 2151)
    000
    Maureen Admin
    Full membership
    1100000
    (0, 0, 0)
    000
    Gonzalo Giribet
    Full membership
    0000000
    (0, 0, 0)
    000
    Gonzalo Giribet
    Full membership
    0000000
    (0, 0, 0)
    000


    Taxonomic Overview for Matrix 'M983' (60 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
    support
    NPA
    cells
    "-" cellscell images labels on
    cell images
    member
    access
    [1] Trilobita
    Taxon name last Modified on 12/05/13
    1115757085004
    [2] Palaeoisopus
    Taxon name last Modified on 12/05/13
    1365757060004
    [3] Pycnogonida
    Taxon name last Modified on 12/05/13
    71109109073004
    [4] Eurypterida
    Taxon name last Modified on 12/05/13
    1109696047004
    [5] Limulus
    Taxon name last Modified on 12/05/13
    42161161050004
    [6] Carcinoscorpius
    Taxon name last Modified on 12/05/13
    44159159050004
    [7] Palaeophonidae
    Taxon name last Modified on 12/05/13
    1268080047004
    [8] Proscorpius
    Taxon name last Modified on 12/05/13
    1228484047004
    [9] Androctonus
    Taxon name last Modified on 12/05/13
    32176176045004
    [10] Belisarius
    Taxon name last Modified on 12/05/13
    38166166049004
    [11] Siro
    Taxon name last Modified on 12/05/13
    33191191029004
    [12] Parasiro
    Taxon name last Modified on 12/05/13
    48176176029004
    [13] Stylocellus
    Taxon name last Modified on 12/05/13
    49178178026004
    [14] StylocellusJP
    Taxon name last Modified on 12/05/13
    49178178026004
    [15] Dalquestia
    Taxon name last Modified on 12/05/13
    48186186019004
    [16] Odiellus
    Taxon name last Modified on 12/05/13
    35196196022004
    [17] Phalangium
    Taxon name last Modified on 12/05/13
    34197197022004
    [18] Opilio
    Taxon name last Modified on 12/05/13
    47187187019004
    [19] Astrobunus
    Taxon name last Modified on 12/05/13
    47187187019004
    [20] Nelima
    Taxon name last Modified on 12/05/13
    47187187019004
    [21] Leiobunum
    Taxon name last Modified on 12/05/13
    32199199022004
    [22] Hadrobunus
    Taxon name last Modified on 12/05/13
    47187187019004
    [23] Caddo
    Taxon name last Modified on 12/05/13
    48186186019004
    [24] Ischyropsalis
    Taxon name last Modified on 12/05/13
    35191191027004
    [25] Hesperonemastoma
    Taxon name last Modified on 12/05/13
    47180180026004
    [26] Ceratolasma
    Taxon name last Modified on 12/05/13
    48181181024004
    [27] Sabacon
    Taxon name last Modified on 12/05/13
    47182182024004
    [28] Taracus
    Taxon name last Modified on 12/05/13
    47182182024004
    [29] Dicranolasma
    Taxon name last Modified on 12/05/13
    47180180026004
    [30] Centetostoma
    Taxon name last Modified on 12/05/13
    50177177026004
    [31] Ortholasma
    Taxon name last Modified on 12/05/13
    48180180025004
    [32] Nemastoma
    Taxon name last Modified on 12/05/13
    33191191029004
    [33] Nipponopsalis
    Taxon name last Modified on 12/05/13
    48180180025004
    [34] Trogulus
    Taxon name last Modified on 12/05/13
    34190190029004
    [35] Equitius
    Taxon name last Modified on 12/05/13
    47184184022004
    [36] Triaenobunus
    Taxon name last Modified on 12/05/13
    48183183022004
    [37] Zuma
    Taxon name last Modified on 12/05/13
    48183183022004
    [38] Oncopus
    Taxon name last Modified on 12/05/13
    47184183023004
    [39] Gnomulus
    Taxon name last Modified on 12/05/13
    47184183023004
    [40] Scotolemon
    Taxon name last Modified on 12/05/13
    35192192026004
    [41] Maiorerus
    Taxon name last Modified on 12/05/13
    35190190028004
    [42] Bishopella
    Taxon name last Modified on 12/05/13
    35192192026004
    [43] Gnidia
    Taxon name last Modified on 12/05/13
    33194194026004
    [44] Pachyloides
    Taxon name last Modified on 12/05/13
    34193193026004
    [45] Hoplobunus
    Taxon name last Modified on 12/05/13
    35190190028004
    [46] Solifugae
    Taxon name last Modified on 12/05/13
    34157157062004
    [47] Palpigradi
    Taxon name last Modified on 12/05/13
    13184184056004
    [48] Liphistius
    Taxon name last Modified on 12/05/13
    3206206044004
    [49] Aphonopelma
    Taxon name last Modified on 12/05/13
    9200200044004
    [50] Nesticus
    Taxon name last Modified on 12/05/13
    7198198048004
    [51] Amblypygi
    Taxon name last Modified on 12/05/13
    4206206043004
    [52] Mastigoproctus
    Taxon name last Modified on 12/05/13
    6205205042004
    [53] Schizomida
    Taxon name last Modified on 12/05/13
    9198198046004
    [54] Ricinulei
    Taxon name last Modified on 12/05/13
    38159159056004
    [55] Pseudoscorpiones
    Taxon name last Modified on 12/05/13
    34163163056004
    [56] Allonothrus
    Taxon name last Modified on 12/05/13
    57150150046004
    [57] Acarus
    Taxon name last Modified on 12/05/13
    44150150059004
    [58] Opilioacarus
    Taxon name last Modified on 12/05/13
    57151151045004
    [59] Rhipicephalus
    Taxon name last Modified on 12/05/13
    44148148061004
    [60] Trigonotarbida
    Taxon name last Modified on 12/05/13
    106104104043004


    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project406
    Matrix downloads20Phylogeny and Systematic Position of Opiliones: A Combined Analysis of Chelicerate Relationships Using Morphological and Molecular Data (20 downloads);
    Project downloads385
    Document downloads1copyright information for exemplar media (1 download);