Abstract
The genus Rhitymna Simon, 1897 is revised by means of new material. Four new species are described: R. gerdmangel spec. nov. (Thailand, Malaysia; male, female), R. merianae spec. nov. (Indonesia: Bali; male), R. flores spec. nov. (Indonesia: Flores; male, female), R. senckenbergi spec. nov. (Philippines; male). The male of R. plana Jäger, 2003 and the female of R. tangi Quan & Liu, 2012 are described for the first time. Rhitymna simoni Jäger, 2003 is recognised as junior synonym of R. cursor (Thorell, 1894) comb. nov., the latter transferred from the genus Olios Walckenaer, 1837. New records are given for further Rhitymna species, among them new country or island records for R. verruca (Wang, 1991) (Thailand), R. tangi Quan & Liu, 2012 (Laos), R. plana Jäger, 2003 (Cambodia), R. pinangensis (Thorell, 1891) (Thailand), R. deelemanae Jäger, 2003 (Bali). The number of cheliceral bristles close to the fang base is recognised as size dependent, therefore without true phylogenetic signal. Two main types of copulatory organs within the genus are recognised and discussed. R. gerdmangel spec. nov. has a special biology as it lives exclusively in bamboo. Holes made by beetles or woodpeckers are used to enter the bamboo stem. Spiders hide during the day and lay their eggs in bamboo internodes.
References
Bonnet, P. (1957) Bibliographia araneorum. Douladoure, Toulouse 2 (3), 1927–3026.
Jäger, P. (2000) Heteropoda parva n. sp. and H. martusa n. sp. primitive or derived Heteropoda species? (Araneae: Sparassidae: Heteropodinae). Mitteilungen des Internationalen Entomologischen Vereins, 25, 195–205.
Jäger, P. (2001a) A new species of Heteropoda (Araneae, Sparassidae, Heteropodinae) from Laos, the largest huntsman spider? Zoosystema, 23, 461–465.
Jäger, P. (2001b) Diversität der Riesenkrabbenspinnen im Himalaya. Über eine Radiation zweier Gattungen in den Schneetropen (Araneae: Sparassidae: Heteropodinae). Courier Forschungsinstitut Senckenberg, 232, 1–136.
Jäger, P. (2003) Rhitymna Simon 1897: an Asian, not an African spider genus. Generic limits and description of new species (Arachnida, Araneae, Sparassidae). Senckenbergiana biologica, 82, 99–125.
Jäger, P. (2005) New large-sized cave-dwelling Heteropoda species from Asia, with notes on their relationships (Araneae: Sparassidae: Heteropodinae). Revue Suisse de Zoologie, 112, 87–114.
https://doi.org/10.5962/bhl.part.80288
Jäger, P. (2007) Spiders (Araneae) from Laos with descriptions of new species. Acta Arachnologica, 56, 29–58.
https://doi.org/10.2476/asjaa.56.29
Jäger, P. (2008) Revision of the huntsman spider genus Heteropoda Latreille 1804: species with exceptional male palpal conformations (Araneae: Sparassidae: Heteropodinae). Senckenbergiana biologica, 88, 239–310.
Jäger, P. & Koh, J.K.H. (2011) Re-uniting sexes after a century: Rhitymna ingens Simon 1897 is a junior synonym of R. pinangensis (Thorell 1891) (Araneae: Sparassidae). Acta Arachnologica, 61, 55–56.
https://doi.org/10.2476/asjaa.60.55
Jäger, P. & Ono, H. (2000) Sparassidae of Japan. I. New species of Olios, Heteropoda, and Sinopoda, with notes on some known species (Araneae: Sparassidae: Sparassinae and Heteropodinae). Acta Arachnologica, 49, 41–60.
https://doi.org/10.2476/asjaa.49.41
Kovac, D. & Streit, B. (1996) The arthropod community of bamboo internodes in Peninsular Malaysia: microzonation and trophic structure. In: Edwards, D.S. et al. (eds): Tropical rainforest research—current issues. Kluwer Academic Publishers, Dordrecht, 85–99.
https://doi.org/10.1007/978-94-009-1685-2_9
Kovac, D. & Yong, H.S. (1992) Abryna regispetri—a bamboo long-horned beetle. Nature Malaysiana, 17, 92–98.
Latreille, P.A. (1804) Histoire naturelle générale et particulière des Crustacés et des Insectes. Duffart, Paris, 7, 144–305.
Lin, Y.C. & Li, S.Q. (2009) First described Patu spiders (Araneae, Symphytognathidae) from Asia. Zootaxa, 2154, 47–68.
Liu, J. & Chen, J. (2014) The first description of the female of Rhitymna macilenta Quan & Liu 2012 from Hainan Island (Araneae: Sparassidae). Acta Arachnologica Sinica, 23, 37–40.
Moradmand, M. & Jäger, P. (2011) A review on the huntsman spider genus Spariolenus Simon, 1880 (Araneae: Sparassidae: Heteropodinae) in Iran with description of four new species. Zootaxa, 2910, 46–62.
Ono, H. (1993) An interesting new crab spider (Araneae, Thomisidae) from Malaysia. Bulletin of the National Museum of Nature and Science Tokyo (A), 19, 87–92.
Quan, D. & Liu, J. (2012) Two new Rhitymna species (Araneae: Sparassidae) from Hainan Island, China. Zootaxa, 3200, 61–68.
Roewer, C.F. (1955) Katalog der Araneae von 1758 bis 1940, bzw. 1954. Institut royal des Sciences naturelles de Belgique, Bruxelles 2, 1–1751 pp.
Simon, E. (1880) Révision de la famille des Sparassidae (Arachnides). Actes de la Société Linnéenne de Bordeaux, 34, 223–351.
Simon, E. (1897) Etudes arachnologiques. 27e Mémoire. XLII. Descriptions d'espèces nouvelles de l'ordre des Araneae. Annales de la Société Entomologique de France, 65, 465–510.
Thorell, T. (1891) Spindlar från Nikobarerna och andra delar af södra Asien. Kongliga Svenska Vetenskaps-Akademiens Handlingar, 24, 1–149.
Thorell, T. (1894) Decas aranearum in ins. Singapore a Cel. Th. Workman inventarum. Bollettino della Società Entomologica Italiana, 26, 321–355.
Walckenaer, C.A. (1837) Histoire naturelle des insectes. Aptères. Roret, Paris, 1, 1–682 pp.
https://doi.org/10.5962/bhl.title.61095
Wang, J.F. (1991) Two new species and three supplemental descriptions of family Heteropodidae from China (Arachnida: Araneae). Sichuan Journal of Zoology, 10, 3–6.
Workman, T. (1896) Malaysian spiders. Belfast, pp. 25–104.
https://doi.org/10.5962/bhl.title.101972
World Spider Catalog (2019) World Spider Catalog. Version 19.5, Natural History Museum Bern. Available from: http://wsc.nmbe.ch (accessed 8 January 2019)