Project 847: Wood, Hannah-Marie, Griswold, Charles E., Gillespie, Rosemary G. 2012. Phylogenetic placement of pelican spiders (Archaeidae, Araneae), with insight into evolution of the "neck" and predatory behaviors of the superfamily Palpimanoidea. Cladistics. 28 (6):598-626.
Specimen: Eriauchenius lavatenda (CASENT:9003160)
View: lateral

Abstract

Phylogenetic relationships among archaeid spider lineages, as well as the placement of archaeids within the Araneomorphae, present a problem in the systematics of spiders. We investigate these relationships by broadly sampling taxa from the Araneomorphae and superfamily Palpimanoidea, as well as from extant and fossil archaeid lineages. Using parsimony and Bayesian methods we perform a total-evidence analysis that includes 126 morphological characters and over 4000 bases from one mitochondrial and three nuclear molecular markers. Phylogenetic analysis results in a delimitation of the superfamily Palpimanoidea to contain five families: Archaeidae, Mecysmaucheniidae, Stenochilidae, Palpimanidae and Huttoniidae. We also find the extant archaeids, which are restricted to the southern hemisphere, to be monophyletic, with the fossil archaeids paraphyletic. This phylogenetic framework is then used to interpret a novel morphological character, the highly modified and elevated cephalic area and elongated chelicerae (jaws), coupled with prey choice observations in the field and observations of chelicerae movements during predatory attacks. We conclude that the evolution of the elevated cephalic area, which reoriented the chelicerae muscles, led to highly manoeuvrable chelicerae and associated novel prey capture strategies. All members of Palpimanoidea appear to have modifications to the cephalic area, such as a diastema or sclerotization around the chelicerae bases, and furthermore, members appear to have evolved prey specialization.


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Project DOI: 10.7934/P847, http://dx.doi.org/10.7934/P847
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 1 Document
  • 39 Taxa
  • 1 Specimen
  • 126 Characters


Download Project SDD File
Total scored cells: 4271
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 126
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 294
Total character states with associated media: 0
Total character states with media with labels:0
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MorphoBank Project 847


    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    Allison LaPlatney (MorphoBank Cur
    Project Administrator
    Last logged in 04/10/13
    3911126004271
    (3537, 0, 734)
    000
    Maureen Admin
    Full membership
    Last logged in 04/09/13
    0000000
    (0, 0, 0)
    000
    Hannah Wood
    Full membership
    Last logged in 04/09/13
    0000000
    (0, 0, 0)
    000


    Taxonomic Overview for Matrix 'M1931' (38 Taxa)

    taxon unscored
    cells
    scored
    cells
    cell
    support
    NPA
    cells
    "-" cellscell images labels on
    cell images
    member
    access
    [1] Hypochilus pococki
    Last Modified in 01/11/13
    29898026003
    [2] Hickmania troglodytes
    Last Modified in 01/11/13
    2101101023003
    [3] Lycosidae sp
    Last Modified in 01/11/13
    39393030003
    [4] Araneus sp
    Last Modified in 01/11/13
    09696030003
    [5] Badumna longinqua
    Last Modified in 01/11/13
    2100100024003
    [6] Dysdera sp
    Last Modified in 01/11/13
    29292032003
    [7] Holarchaea sp
    Last Modified in 01/11/13
    39190033003
    [8] Kukulcania hibernalis hw0079
    Last Modified in 01/11/13
    19898027003
    [9] Loxosceles sp
    Last Modified in 01/11/13
    29291033003
    [10] Mimetus sp
    Last Modified in 01/11/13
    2100100024003
    [11] Pararchaeidae sp
    Last Modified in 01/11/13
    2103103021003
    [12] Stegodyphus sp hwsteg42
    Last Modified in 01/11/13
    29797027003
    [13] Uroctea sp
    Last Modified in 01/11/13
    09595031003
    [14] Gnaphosidae sp
    Last Modified in 01/11/13
    29796028003
    [15] Palpimanus sp hw0082
    Last Modified in 01/11/13
    4105103019003
    [16] Stenochilus sp hw0081
    Last Modified in 01/11/13
    2104103021003
    [17] Huttonia sp hwhutt41
    Last Modified in 01/11/13
    2106104020003
    [18] Aotearoa magna hw0050
    Last Modified in 01/11/13
    159796015003
    [19] Mesarchaea bell hw0040 20a
    Last Modified in 01/11/13
    229189015003
    [20] Mecysmauchenius segmentatus hw0098
    Last Modified in 01/11/13
    2109107017003
    [21] Chilarchaea quellon hw0029
    Last Modified in 01/11/13
    2107104020003
    [22] Zearchaea sp hw0051
    Last Modified in 01/11/13
    2112109015003
    [23] NewGenus lavatenda hw0003ab
    Last Modified in 01/11/13
    2111110014003
    [24] NewGenus jeanneli hw0057
    Last Modified in 01/11/13
    139999014003
    [25] NewGenus legendrei hw0014
    Last Modified in 01/11/13
    149898014003
    [26] Eriauchenius workmani hw0006
    Last Modified in 01/11/13
    2112111013003
    [27] Eriauchenius bourgini hw0061
    Last Modified in 01/11/13
    139999014003
    [28] Afrarchaea pilgrimsrest hw59af3
    Last Modified in 01/11/13
    139999014003
    [29] Afrarchaea woodae hw57af1
    Last Modified in 01/11/13
    2111110014003
    [30] Austrarchaea nodosa hw0074
    Last Modified in 01/11/13
    2112111013003
    [31] Austrarchaea davisae hwau066
    Last Modified in 01/11/13
    149999013003
    [32] Austrarchaea mainae hw0075
    Last Modified in 01/11/13
    149999013003
    [33] Lacunauchenius speciousus
    Last Modified in 01/11/13
    615352013003
    [34] Archaea paradoxa
    Last Modified in 01/11/13
    337979014003
    [35] Afrarchaea grimaldii
    Last Modified in 01/11/13
    536060013003
    [36] Myrmecarchaea sp
    Last Modified in 01/11/13
    76414109003
    [37] Baltarchaea conica
    Last Modified in 01/11/13
    71484708003
    [38] Patarchaea muralis
    Last Modified in 01/11/13
    833333010003


    Project views

    type number of views Individual items viewed (where applicable)
    Total project views1895
    Project overview229
    Matrix views137Matrix landing page (119 views); Morphology Matrix (18 views);
    Media views326Media search (281 views); M193804 (45 views);
    Taxon list728
    Specimen list218
    Documents list104
    Bibliography62
    Views for media list91




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project8
    Matrix downloads5Morphology Matrix (5 downloads);
    Project downloads2
    Media downloads1M193804 (1 download);