Open Access Open Access  Restricted Access Subscription or Fee Access


DOI: http://dx.doi.org/10.11646/zootaxa.3920.3.2

Unexpected occurrence of the genus Eratigena in Laos with description of a new species (Araneae: Agelenidae)

ANGELO BOLZERN, PETER JÄGER

Abstract


During fieldtrips to Laos in 2009 and 2012, two male agelenid specimens were collected from two different caves in the Bolikhamsay Province. Examination of morphological and molecular (CO1) characters revealed, that these specimens belong to a new species, Eratigena laksao sp. n. The cheliceral retromargin of the examined specimens have more than six teeth and the most proximal tooth is distinctly smaller, two character states that are regarded as synapomorphic for Eratigena. Nevertheless, due to the presence of ventral spines at tarsus IV, the completely reduced distal sclerite at the median apophysis, and the lack of females, the genus affiliation of this species remains tentative. E. laksao sp. n. can easily be identified by the unique presence of distinct bristles at the distal palpal tibia.

 


Keywords


relict species, cave, spider, taxonomy, morphology, molecular analysis, CO1

Full Text:

PDF/A (5.81 MB)

References


Barrett, D.H. & Hebert, D.N. (2005) Identifying spiders through DNA barcodes. Canadian Journal of Zoology, 83, 481–491.

http://dx.doi.org/10.1139/z05-024

Barrientos, J.A., Ribera, C. & Pons, G.X. (2002) Nuevos datos sobre los agelénidos de las islas Baleares (Araneae: Agelenidae). Revista Ibérica de Aracnología, 6, 85–90.

Bolzern, A. (2014) Agelenids of the World. Available from: http://agelenidsoftheworld.myspecies.info (accessed 29 September 2014)

Bolzern, A., Burckhardt, D. & Hänggi, A. (2013) Phylogeny and taxonomy of European funnel-web spiders of the Tegenaria-Malthonica complex (Araneae: Agelenidae) based upon morphological and molecular data. Zoological Journal of the Linnean Society, 168, 723–848.

http://dx.doi.org/10.1111/zoj.12040

Bolzern, A., Hänggi, A. & Burckhardt, D. (2010) Aterigena, a new genus of funnel-web spider, shedding some light on the Tegenaria-Malthonica problem (Araneae: Agelenidae). The Journal of Arachnology, 28, 162–182.

http://dx.doi.org/10.1636/A09-78.1

Goloboff, P.A., Farris, J.S. & Nixon, K.C. (2008) TNT, a free program for phylogenetic analysis. Cladistics, 24, 774–786.

Larkin, M.A., Blackshields, G., Brown, N.P., Chenna, R., McGettigan, P.A., McWilliam, H., Valentin, F., Wallace, I.M., Wilm, A., Lopez, R., Thompson, J.D., Gibson, T.J. & Higgins, D.G. (2007) Clustal W and clustal X version 2.0. Bioinformatics, 23, 2947–2948.

http://dx.doi.org/10.1093/bioinformatics/btm404

Maddison, W. P. & Maddison, D.R. (2015) Mesquite: a modular system for evolutionary analysis. Version 3.02. Available from: http://mesquiteproject.org (accessed 29 September 2014)

Miller, J.A., Carmichael, A., Ramírez, M.J., Spagna, J.C., Haddad, C.R., Řezáč, M., Johannesen, J., Král, J., Wang, X.-P. & Griswold, C.E. (2010) Phylogeny of entelegyne spiders: affinities of the family Penestomidae (NEW RANK), generic phylogeny of Eresidae, and asymmetric rates of change in spinning organ evolution (Araneae, Araneoidea, Entelegynae). Molecular Phylogenetics and Evolution, 55, 786–804.

http://dx.doi.org/10.1016/j.ympev.2010.02.021

Nentwig, W., Blick, T., Gloor, D., Hänggi, A. & Kropf, C. (2014) Spiders of Europe. Available from: http://www.araneae.unibe.ch (accessed 12 September 2014)

Tamura, K., Stecher, G., Peterson, D., Filipski, A. & Kumar, S. (2013) MEGA6: Molecular evolutionary genetics analysis version 6.0. Molecular Biology and Evolution, 30, 2725–2729.

http://dx.doi.org/10.1093/molbev/mst197

Thompson, J.D., Higgins, D.G. & Gibson, T.J. (1994) CLUSTAL W: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, positions specific gap penalties and weight matrix choice. Nucleic Acids Research, 22, 4673–4680.

http://dx.doi.org/10.1093/nar/22.22.4673

Wang, X.P. (2014) Online Coelotinae, version 2.0. Available from: http://www.amaurobiidae.com (accessed 29 September 2014)

World Spider Catalog (2014) World Spider Catalog. Natural History Museum Bern. version 15.5. Available from: http://wsc.nmbe.ch (accessed 29 September 2014)


Refbacks

  • There are currently no refbacks.


 
ISSN 1175-5326 (Print Edition) & ISSN 1175-5334 (Online Edition)
Published by Magnolia Press, Auckland, New Zealand
A founding journal of Biotaxa