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
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


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Allison LaPlatney (MorphoBank Cur
Project Administrator
Last logged in 04/10/13
3911126004271
(3537, 0, 734)
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Maureen Admin
Full membership
Last logged in 04/09/13
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Hannah Wood
Full membership
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Taxonomic Overview for Matrix 'M1931' (38 Taxa)

taxon unscored
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[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 views1272
Project overview150
Matrix views96Matrix landing page (79 views); Morphology Matrix (17 views);
Media views232Media search (196 views); M193804 (36 views);
Taxon list501
Specimen list124
Documents list59
Bibliography47
Views for media list63




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);