Abstract
The southeast Asian genus Eupoa includes small salticid spiders with unusual palpi. Two new species of the genus are described. Two morphological characters (presence of a median apophysis in the male palp and of a tarsal claw in the female palp) suggest it is excluded from the main clade of salticids (the Salticoida). Sequences of nuclear and mitochondrial gene regions (28S, 18S, 16S–ND1, CO1), analyzed by parsimony and Bayesian methods, agree that Eupoa is a basal (non-salticoid) salticid, but fail to find a clear placement. Eupoa may represent a deep-branching lineage long separate from the lyssomanines, spartaeines, and other basal groups.
References
Blest, A.D., O'Carroll, D.C. & Carter, M. (1990) Comparative ultrastructure of Layer I receptor mosaics in principal eyes of jumping spiders: the evolution of regular arrays of light guides. Cell and Tissue Research, 262, 445–460.
Ewing, B. & Green, P. (1998) Basecalling of automated sequencer traces using phred. II. Error probabilities. Genome Research, 8, 186–194.
Ewing, B., Hillier, L., Wendl, M., Green, P. (1998) Basecalling of automated sequencer traces using phred. I. Accuracy assessment. Genome Research, 8, 175–185.
Felsenstein, J. (1985) Confidence limits on phylogenies: an approach using the bootstrap. Evolution, 39, 783–791.
Green, P. (1999) Phrap, version 0.990329, distributed by the author. See http://www.phrap.org (accessed 15 March 2006)
Green, P. & Ewing, B. (2002) Phred, version 0.020425.c, distributed by the authors. See http://www.phrap.org (accessed 15 March 2006)
Huelsenbeck, J.P. & Ronquist, F. (2001) MRBAYES: Bayesian inference of phylogeny. Bioinformatics, 17, 754755.
Jackson, R.R. & Pollard, S.D. (1996) Predatory behavior of jumping spiders. Annual Review of Entomology, 41, 287– 308.
Maddison, D.R. & Maddison, W.P. (2005) MacClade version 4: Analysis of phylogeny and character evolution. Version 4.08. Sinauer Associates, Sunderland, Massachusetts.
Maddison, W.P. (1988) A revision of jumping spider species groups formerly placed in the genus Metaphidippus, with a discussion of salticid phylogeny (Araneae). Unpublished PhD. thesis, Harvard University.
Maddison, W.P. (1996). Pelegrina Franganillo and other jumping spiders formely placed in the genus Metaphidippus (Araneae: Salticidae). Bulletin of the Museum of Comparative Zoology, 154, 215–368.
Maddison, W.P. & Hedin, M.C. (2003) Jumping spider phylogeny (Araneae: Salticidae). Invertebrate Systematics, 17, 529–549.
Maddison, W.P. & Maddison, D.R. (2006) Mesquite: A modular system for evolutionary analysis. Version 1.12. Available from http://mesquiteproject.org (accessed 23 September 2006).
Maddison, W.P. & Needham, K. (2006) Lapsiines and hisponines as phylogenetically basal salticid spiders (Araneae: Salticidae). Zootaxa, 1255, 37–55.
Mallatt, J. & Sullivan, J. (1998) 28S and 18S rDNA sequences support the monophyly of lampreys and hagfishes. Molecular Biology and Evolution, 15, 1706–1718.
Platnick, N.I. (2006) World spider catalog version, 7.0. Available from http://research.amnh.org/entomology/spiders/catalog/ SALTICIDAE.html. (accessed 24 October 2006)
Peng, X.J. & Li, S.Q. (2006) Description of Eupoa liaoi sp. nov. from China (Araneae: Salticidae). Zootaxa, 1285, 65– 68.
Rodrigo, A.G. & Jackson, R.R. (1992) Four jumping spider genera of the Cocalodes-group are monophyletic with genera of the Spartaeinae (Araneae: Salticidae). New Zealand Natural Sciences, 19, 61–67.
Ronquist, F. & Huelsenbeck, J.P. (2003) MRBAYES 3: Bayesian phylogenetic inference under mixed models. Bioinformatics, 19, 1572–1574.
Swofford, D.L. (2002) PAUP*. Phylogenetic Analysis Using Parsimony (*and Other Methods). Version 4.0b10. Sinauer Associates: Sunderland, Massachusetts.
Thompson, J.D., Gibson,T.J., Plewniak, F., Jeanmougin, F. & Higgins, D.G. (1997) The ClustalX windows interface: flexible strategies for multiple sequence alignment aided by quality analysis tools. Nucleic Acids Research, 25, 4876–4882.
Wanless, F.R. (1980) A revision of the spider genera Asemonea and Pandisus (Araneae: Salticidae). Bulletin of the British Museum of Natural History (Zoology), 39, 213–257.
Wanless, F.R. (1982) A revision of the spider genus Cocalodes with a description of a new related genus (Araneae: Salticidae). Bulletin of the British Museum of Natural History (Zoology), 42, 263–298.
Wanless, F.R. (1984) A review of the spider subfamily Spartaeinae nom. n. (Araneae: Salticidae) with descriptions of six new genera. Bulletin of the British Museum of Natural History (Zoology), 46, 135–205.
Wijesinghe, D.P. (1992) A new genus of jumping spider from Borneo with notes on the spartaeine palp (Araneae: Salticidae). Raffles Bulletin of Zoology, 40, 9–19.
Wijesinghe, D.P. (1997) Relationships of Spartaeinae and other primitive jumping spiders, with reviews of Cyrba and Cocalus and description of a new genus (Arachnida: Araneae: Salticidae). Unpublished PhD. thesis, City University of New York.
Zabka, M. (1985) Systematic and zoogeographic study on the family Salticidae (Araneae) from Viet-Nam. Annales zoologici (Warszawa), 39, 11, 1–485.