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.


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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
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MorphoBank Project 423

    Authors' Institutions

    • Harvard University

    • American Museum of Natural History

    • Australian Museum



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    (scored, NPA, "-")
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    MorphoBank Curator
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    60012530012393
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    Maureen Admin
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    1100000
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    Gonzalo Giribet
    Full membership
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    Gonzalo Giribet
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    Taxonomic Overview for Matrix 'M983' (60 Taxa)

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    [1] Trilobita
    Last Modified in 12/05/13
    1115757085004
    [2] Palaeoisopus
    Last Modified in 12/05/13
    1365757060004
    [3] Pycnogonida
    Last Modified in 12/05/13
    71109109073004
    [4] Eurypterida
    Last Modified in 12/05/13
    1109696047004
    [5] Limulus
    Last Modified in 12/05/13
    42161161050004
    [6] Carcinoscorpius
    Last Modified in 12/05/13
    44159159050004
    [7] Palaeophonidae
    Last Modified in 12/05/13
    1268080047004
    [8] Proscorpius
    Last Modified in 12/05/13
    1228484047004
    [9] Androctonus
    Last Modified in 12/05/13
    32176176045004
    [10] Belisarius
    Last Modified in 12/05/13
    38166166049004
    [11] Siro
    Last Modified in 12/05/13
    33191191029004
    [12] Parasiro
    Last Modified in 12/05/13
    48176176029004
    [13] Stylocellus
    Last Modified in 12/05/13
    49178178026004
    [14] StylocellusJP
    Last Modified in 12/05/13
    49178178026004
    [15] Dalquestia
    Last Modified in 12/05/13
    48186186019004
    [16] Odiellus
    Last Modified in 12/05/13
    35196196022004
    [17] Phalangium
    Last Modified in 12/05/13
    34197197022004
    [18] Opilio
    Last Modified in 12/05/13
    47187187019004
    [19] Astrobunus
    Last Modified in 12/05/13
    47187187019004
    [20] Nelima
    Last Modified in 12/05/13
    47187187019004
    [21] Leiobunum
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    32199199022004
    [22] Hadrobunus
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    47187187019004
    [23] Caddo
    Last Modified in 12/05/13
    48186186019004
    [24] Ischyropsalis
    Last Modified in 12/05/13
    35191191027004
    [25] Hesperonemastoma
    Last Modified in 12/05/13
    47180180026004
    [26] Ceratolasma
    Last Modified in 12/05/13
    48181181024004
    [27] Sabacon
    Last Modified in 12/05/13
    47182182024004
    [28] Taracus
    Last Modified in 12/05/13
    47182182024004
    [29] Dicranolasma
    Last Modified in 12/05/13
    47180180026004
    [30] Centetostoma
    Last Modified in 12/05/13
    50177177026004
    [31] Ortholasma
    Last Modified in 12/05/13
    48180180025004
    [32] Nemastoma
    Last Modified in 12/05/13
    33191191029004
    [33] Nipponopsalis
    Last Modified in 12/05/13
    48180180025004
    [34] Trogulus
    Last Modified in 12/05/13
    34190190029004
    [35] Equitius
    Last Modified in 12/05/13
    47184184022004
    [36] Triaenobunus
    Last Modified in 12/05/13
    48183183022004
    [37] Zuma
    Last Modified in 12/05/13
    48183183022004
    [38] Oncopus
    Last Modified in 12/05/13
    47184183023004
    [39] Gnomulus
    Last Modified in 12/05/13
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    [40] Scotolemon
    Last Modified in 12/05/13
    35192192026004
    [41] Maiorerus
    Last Modified in 12/05/13
    35190190028004
    [42] Bishopella
    Last Modified in 12/05/13
    35192192026004
    [43] Gnidia
    Last Modified in 12/05/13
    33194194026004
    [44] Pachyloides
    Last Modified in 12/05/13
    34193193026004
    [45] Hoplobunus
    Last Modified in 12/05/13
    35190190028004
    [46] Solifugae
    Last Modified in 12/05/13
    34157157062004
    [47] Palpigradi
    Last Modified in 12/05/13
    13184184056004
    [48] Liphistius
    Last Modified in 12/05/13
    3206206044004
    [49] Aphonopelma
    Last Modified in 12/05/13
    9200200044004
    [50] Nesticus
    Last Modified in 12/05/13
    7198198048004
    [51] Amblypygi
    Last Modified in 12/05/13
    4206206043004
    [52] Mastigoproctus
    Last Modified in 12/05/13
    6205205042004
    [53] Schizomida
    Last Modified in 12/05/13
    9198198046004
    [54] Ricinulei
    Last Modified in 12/05/13
    38159159056004
    [55] Pseudoscorpiones
    Last Modified in 12/05/13
    34163163056004
    [56] Allonothrus
    Last Modified in 12/05/13
    57150150046004
    [57] Acarus
    Last Modified in 12/05/13
    44150150059004
    [58] Opilioacarus
    Last Modified in 12/05/13
    57151151045004
    [59] Rhipicephalus
    Last Modified in 12/05/13
    44148148061004
    [60] Trigonotarbida
    Last Modified in 12/05/13
    106104104043004


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    Matrix views2303Matrix landing page (2000 views); Phylogeny and Systematic Position of Opiliones: A Combined Analysis of Chelicerate Relationships Using Morphological and Molecular Data (303 views);
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    Taxon list21618
    Specimen list3192
    Bibliography1170
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