Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 1858 No. 1: 27 Aug. 2008
Type: Article
Published: 2008-08-27
DOI: 10.11646/zootaxa.1858.1.1
Page range: 1–8
Abstract views: 59
PDF downloaded: 2

Description of a new species of Paraxenylla (Collembola, Hypogastruridae) from Brazil, with comments on the genus

Mestrando do Programa de Pós-Graduação em Ecologia, Laboratório de Gestão da Biodiversidade, Bloco A, sala 100. Instituto de Biologia, CCS, Universidade Federal do Rio de Janeiro, Ilha do Fundão. CEP: 21941–590. Rio de Janeiro, RJ, Brasil
UMR5202 du CNRS, CP50, Muséum National d’Histoire Naturelle, 45 rue Buffon, 75005 Paris, France
Collembola Neotropics Paraxenylla new species taxonomy chaetotaxy identification key

Abstract

The genus Paraxenylla Murphy, 1965 is redefined and compared to Xenylla Tullberg, 1869 and Thibaudylla Najt & Weiner, 1997, its closest relatives. It is characterized by the differentiation of four thickened S-chaetae on the fourth antennal segment, modified mouthparts, the absence of empodial appendage, the presence of 5+5 eyes, the absence of anal spines and the anus in terminal position. P. sooretamensis sp. nov. is described, characterized by a reduced labial chaetotaxy, modified mouthparts, 6 axial chaetae on Th II–III and Abd IV, 4+4 chaetae on ventral tube and several other morphological features. Its chaetotaxy is very different from that of other Paraxenylla except P. arenosa Uchida & Tamura, 1967, resembling that of Xenylla or Thibaudylla. The new species was collected in forest litter about 40 km inland from the coast line of Espírito Santo, Brazil, while all other species of the genus live in littoral habitats. The three species Xenylla longicauda Folsom, 1898, X. occidentalis Womersley, 1933 and X. littoralis Womersley, 1933, that Palacios and Janssens (2006) considered to probably belong to Paraxenylla, do not fit the current definition of this genus (anal spines are present), and are either Xenylla or Thibaudylla. A key and a table of the 9 species of Paraxenylla are given.

References

  1. Culik, M. & Deharveng, L. (1986) First records of the marine intertidal Collembolan Xenylla affiniformis (Hypogastruridae) for North America. Entomological News, 97(5), 201–202.

    Deharveng, L. (1983) Morphologie évolutive des Collemboles Neanurinae en particulier de la lignée néanurienne. Travaux du Laboratoire d’Ecobiologie des Arthropodes édaphiques, Toulouse, 4(2), 1–63.

    Deharveng, L. & Weiner, W.M. (1984) Collemboles de Corée du Nord. III––Morulinae et Neanurinae. Travaux du Laboratoire d’Ecobiologie des Arthropodes édaphiques, Toulouse, 4(4), 1–61.

    Fjellberg, A. (1999) The Labial Palp in Collembola. Zoologischer Anzeiger, 237, 309–330.

    Folsom, J.W. (1898) Japanese Collembola, Part I. Bulletin of the Essex Institute, 29, 51–58.

    Gama, M.M. da & Deharveng, L. (1984) Haloxenylla, nouveau genre halophile de Collembole Hypogastruridae. Bulletin de la Société d’Histoire Naturelle de Toulouse, 120, 131–136.

    Gama, M.M. da (1980) Evolutionary systematics of Xenylla. XI. Species from the Australian region. Records of the South Australian Museum, 18(5), 123–129.

    Gama, M.M. da (1981) Evolutionary systematics of Xenylla. XII. Redescription of X. occidentalis Womersley and a comparison of the chaetotaxy of X. arenosa Uchida & Tamura and X. littoralis Womersley (Insecta: Collembola). Records of the South Australian Museum, 18(10), 223–226.

    Jordana, R., Arbea, J.I., Simón, C. & Luciáñez, M.J. (1997) Collembola, Poduromorpha. In: Ramos, M. A. et al. (Eds.). Fauna Ibérica. Vol. 8, Museo Nacional de Ciencias Naturales, CSIS, Madrid, 807pp.

    Murphy, D.H. (1965) Collembola Poduromorpha from the Gambia (West Africa). Journal of Zoology, 146, 388–411.

    Najt, J. & Weiner, W.M. (1997) Collembola Poduromorpha de Nouvelle-Calédonie. In: Najt, J. & Matile, L. (Eds), Zoologia Neocaledonica, Vol. 4. Mémoires du Muséum National d’ Histoire Naturelle, Paris, 171, 9–44.

    Palacios-Vargas, J.G. & Vázquez, M.M. (1988) Three new species of littoral Collembola (Hypogastruridae) from Baja California Sur, Mexico. Journal of the Kansas Entomological Society, 61(4), 433–440.

    Palacios-Vargas, J.G. & Janssens, F. (2006) Two new American species of Paraxenylla (Collembola: Hypogastruridae) and ecological notes. Zootaxa, 1312, 37–47.

    Salmon J.T. (1974) Notes and drawings from type material of Collembola. Zoological Publications from the Victoria University of Wellington, 66, 1–41.

    Smolis, A. & Deharveng, L. (2006) A new species of Pronura Delamare Deboutteville, 1953 from North Vietnam (Collembola: Neanuridae: Neanurinae). Annales Zoologici, 56 (3), 443–448.

    Stach, J. (1930) Verzeichnis der Apterygogenea Ungarns, Annales Musei Nationalis Hungarici, 26, 269–312.

    Thibaud, J.-M. & Weiner, W.M. (1997) Collemboles interstitiels des sables de Nouvelle- Calédonie. In: Najt, J. & Matile, L. (Eds.), Zoologia Neocaledonica, Vol. 4. Mémoires du Muséum National d’Histoire Naturelle, Paris, 171, 63–89.

    Tullberg T. (1869) Om skandinaviska Podurider af Underfamiljen Lipurinae. Akademisk Afhandling, Upsala, 21 pp.

    Uchida, H. & Tamura, H. (1967) Eine neue litorale Collembolen-Art von Hokkaido. Journal of the Faculty of Science, Hokkaido University. Series VI, Zoology, 16(2), 234–237.

    Womersley, H. (1933) A preliminary account of the Collembola-Arthropleona of Australia, I Poduroidea. Transactions of the Royal Society of South Australia, 57, 48–71.

    Yosii, R. (1960) On some Collembola of New Caledonia, New Britain and Solomon Islands. Bulletin of the Osaka Museum of Natural History, 12, 9–38.