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Research Article
Functional morphology and bite performance of raptorial chelicerae of camel spiders (Solifugae)
Arie van der Meijden, Franz Langer, Renaud Boistel, Patrik Vagovic, Michael Heethoff
Journal of Experimental Biology 2012 215: 3411-3418; doi: 10.1242/jeb.072926
Arie van der Meijden
1CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Campus Agrário de Vairão, 4485-661 Vairão, Portugal
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  • For correspondence: mail@arievandermeijden.nl michael@heethoff.de
Franz Langer
2Institute for Evolution and Ecology, University of Tübingen, Auf der Morgenstelle 28E, D-72076 Tübingen, Germany
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Renaud Boistel
3IPHEP-UMR CNRS 7262-UFR SFA Université de Poitiers, 6 rue Michel Brunet, F-86022 Poitiers, France
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Patrik Vagovic
4ANKA Light Source, Karlsruhe Institute of Technology, Karlsruhe, Germany
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Michael Heethoff
2Institute for Evolution and Ecology, University of Tübingen, Auf der Morgenstelle 28E, D-72076 Tübingen, Germany
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  • For correspondence: mail@arievandermeijden.nl michael@heethoff.de
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  • Fig. 1.
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    Fig. 1.

    Rendering of movable finger of Rhagodes. Measurements were taken on the movable finger to calculate mechanical advantage. T, tip; MT, main tooth; LI, muscle insertion for levator muscle; J, joint.

  • Fig. 2.
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    Fig. 2.

    Dorsal view of Galeodes (left) and Rhagodes (right). Clearly, the burrowing Rhagodes has relatively larger chelicerae and shorter legs than the cursorial Galeodes. These images are not to scale.

  • Table 1.
  • Fig. 3.
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    Fig. 3.

    Renderings of Rhagodes (A) and Galeodes (B) showing the position of the depressor digitus mobilus (dark blue) relative to the movable finger (green), tendon (transparent red) and levator muscle (transparent blue). Scale bars are 5 mm.

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    Fig. 4.

    Renderings of Galeodes chelicerae. (A) Lateral view of left chelicera. (B) Movable finger (green), tendon (red) and levator muscle (transparent blue). (C) Dorsal overview image of chelicerae and propeltidium (yellow). (D) Caudal view of levator muscle and tendon, showing the five lobes of the tendon, as well as the large longitudinal spaces (dorsal) and the space occupied by the depressor muscle (ventral). All scale bars are 5 mm.

  • Fig. 5.
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    Fig. 5.

    Renderings of Rhagodes chelicerae. (A) Lateral view of left chelicera. (B) Movable finger (green), tendon (red) and levator muscle (transparent blue). (C) Dorsal overview image of chelicerae and propeltidium (yellow). (D) Caudal view of levator muscle and tendon, showing the five lobes of the tendon, as well as the large longitudinal spaces (dorsal) and the space occupied by the depressor muscle (ventral). All scale bars are 5 mm.

  • Fig. 6.
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    Fig. 6.

    Maximum bite force plotted against chelicera length (A), width (B), height (C) and the product of length × width × height (LWH, D) on log–log axes. Although overlap exists between the two species in chela measurements, Rhagodes (circles) has higher bite forces than Galeodes (squares) for similar chela dimensions.

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Research Article
Functional morphology and bite performance of raptorial chelicerae of camel spiders (Solifugae)
Arie van der Meijden, Franz Langer, Renaud Boistel, Patrik Vagovic, Michael Heethoff
Journal of Experimental Biology 2012 215: 3411-3418; doi: 10.1242/jeb.072926
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Research Article
Functional morphology and bite performance of raptorial chelicerae of camel spiders (Solifugae)
Arie van der Meijden, Franz Langer, Renaud Boistel, Patrik Vagovic, Michael Heethoff
Journal of Experimental Biology 2012 215: 3411-3418; doi: 10.1242/jeb.072926

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