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Type: Article
Published: 2020-11-04
Page range: 493–514
Abstract views: 90
PDF downloaded: 4

A new troglobitic palpigrade  from Central Brazil, with notes on a new opisthosomal character (Arachnida: Palpigradi)

Centro de Estudos em Biologia Subterrânea, Setor de Biodiversidade Subterrânea, Departamento de Ecologia e Conservação, Universidade Federal de Lavras, Lavras, MG. CEP 37200-000, Brazil.
Department of Biological Sciences, Florida International University, 11200 S.W. 8th Street, Miami, FL, 33199, USA. Grupo de Investigación Protección Vegetal de Cultivos, CITE II-B, Universidad de Almería, 04120, Almería, Spain.
Centro de Estudos em Biologia Subterrânea, Setor de Biodiversidade Subterrânea, Departamento de Ecologia e Conservação, Universidade Federal de Lavras, Lavras, MG. CEP 37200-000, Brazil.
Arachnida Eukoenenia audax sp. nov. Gruta Cabeceira d’água morphology taxonomy

Abstract

A new species of palpigrade from the cave Gruta Cabeceira d’água in Goiás state in Central Brazil is described and illustrated based on 11 specimens: five adult males, two adult females, two immatures C and two immatures B. Eukoenenia audax sp. nov. was collected mainly in the sand banks near the main water stream, where flooding and important water fluctuations occur in the cave. The new Brazilian species shows three uncommon morphological traits: the presence of 7 + 7 setae on the propeltidium, one deuto-tritosternal seta, and 9–11 blades in the lateral organs; these characters relate Eukoenenia audax sp. nov. with only a handful of species in the world. The presence of a pair of cavities was identified in the intersegmental furrow between opisthosomal sternites III–IV, IV–V, V–VI and VI–VII. A comprehensive study of this new character was performed in other species available to the authors, and a discussion of its possible origin and function is presented.

 

References

  1. Ballesteros, J.A., Santibáñez López, C.E., Kováč, Ĺ., Gavish-Regev, E. & Sharma, P.P. (2019) Ordered phylogenomic subsampling enables diagnosis of systematic errors in the placement of the enigmatic arachnid order Palpigradi. Proceedings of the Royal Society B, 286, 20192426.

    https://doi.org/10.1098/rspb.2019.2426

    Barranco, P. & Mayoral, J.G. (2014) New palpigrades (Arachnida, Eukoeneniidae) from the Iberian Peninsula. Zootaxa, 3826 (3), 544–562.

    https://doi.org/10.11646/zootaxa.3826.3.6

    Bu, Y., Souza, M.F.V.R. & Ferreira, R.L. (2019) A new locality of Koeneniodes madecassus Remy, 1950 (Palpigradi: Eukoeneniidae) in China, with the first complete redescription of a Koeneniodes species. Zootaxa, 4658 (3), 541–555.

    https://doi.org/10.11646/zootaxa.4658.3.6

    Christian, E. (2014) A new Eukoenenia species from the Caucasus bridges a gap in the known distribution of palpigrades (Arachnida: Palpigradi). Biologia, 69 (12), 1701–1706.

    https://doi.org/10.2478/s11756-014-0478-1

    Christian, E. & Christophoryová, J. (2013) Eukoenenia florenciae (Arachnida: Palpigradi): lessons from a newcomer to central Europe and the island of Tenerife. Biologia, 68 (6), 1182–1188.

    https://doi.org/10.2478/s11756-013-0266-3

    Christian, E., Kováč, L., Ozimec, R., Polak, S. & Zagmajster, M. (2012) Distribution and morphology of the European Karst palpigrade Eukoenenia gasparoi (Arachnida: Palpigradi). Journal of Arachnology, 40, 265–273.

    https://doi.org/10.1636/Ha12-27.1

    Christian, E., Isaia, M., Paschetta, M. & Bruckner, A. (2014) Differentiation among cave populations of the Eukoenenia spelaea species-complex (Arachnida: Palpigradi) in the southwestern Alps. Zootaxa, 3794 (1), 52–86.

    https://doi.org/10.11646/zootaxa.3794.1.2

    Condé, B. (1956) Microtéliphonides cavernicoles des Alpes de Provence et du Vercors. Bulletin du Muséum National d’Histoire Naturelle, Paris, 28 (2), 199–204 + 512–518.

    Condé, B. (1977) Nouveaux palpigrades du muséum de Genève. Revue Suisse de Zoologie, 84 (3), 665–674.

    https://doi.org/10.5962/bhl.part.91415

    Condé, B. (1979a) Palpigrades de Grèce, de Guyane et du Kenya. Revue Suisse de Zoologie, 86 (1), 167–179.

    https://doi.org/10.5962/bhl.part.82284

    Condé, B. (1979b) Premiers Palpigrades du Gabon. Annales de Sciences Naturelles, Zoologie, 1 (13), 57–62.

    Condé, B. (1988) Nouveaux palpigrades de Trieste, de Slovénie, de Malte, du Paraguay, de Thaïlande e de Bornéo. Revue Suisse de Zoologie, 95 (3), 723–750.

    https://doi.org/10.5962/bhl.part.81931

    Condé, B. (1989) Palpigrades (Arachnida) de grottes d’Europe. Revue Suisse de Zoologie, 96 (4), 823–840.

    Condé, B. (1992) Palpigrades cavernicoles et endogés de Thaïlande et des Célèbes (1ère note). Revue Suisse de Zoologie, 96 (4), 823–840.

    https://doi.org/10.5962/bhl.part.79845

    Condé, B. (1993) Description du mâle de deux espèces de Palpigrades. Revue Suisse de Zoologie, 100 (2), 279–287.

    https://doi.org/10.5962/bhl.part.79861

    Condé, B. (1996) Les Palpigrades, 1885–1995: acquisitions et lacunes. Revue Suisse de Zoologie, Hors Série, 87–106.

    Condé, B. (1998) Palpigradida. In: Juberthie, C. & Decu, V. (Eds.), Encyclopaedia Biospeleologica. Vol. II. Société Internationale de Biospeologie, Moulis-Bucarest, pp. 913–920.

    Ferreira, R.L., Souza, M.F.V.R., Machado, E.O. & Brescovit, A.D. (2011) Description of a new Eukoenenia (Palpigradi: Eukoeneniidae) and Metagonia (Araneae: Pholcidae) from Brazilian caves, with notes on their ecological interactions. Journal of Arachnology, 39 (3), 409–419.

    https://doi.org/10.1636/Ha11-03.1

    Franz-Guess, S. (2019) Microscopic anatomy of Eukoenenia spelaea (Palpigradi): a miniaturized euchelicerate. Dissertation, LMU München, Faculty of Biology, Gröbenzell, 205 pp.

    Giribet, G., McIntyre, E., Christian, E., Espinasa, L., Ferreira, R.L., Francke, O.F., Harvey, M.S., Isaia, M., Kováč, Ĺ., McCutchen, L., Souza, M.F.V.R. & Zagmajster, M. (2014) The first phylogenetic analysis of Palpigradi (Arachnida)—the most enigmatic arthropod order. Invertebrate Systematics, 28, 350–360.

    https://doi.org/10.1071/IS13057

    Harvey, M.S. (2003) Catalogue of the Smaller Arachnid Orders of the World: Amblypygi, Uropygi, Schizomida, Palpigradi, Ricinulei and Solifugae. CSIRO Publishing, Melbourne, 385 pp.

    https://doi.org/10.1071/9780643090071

    Kováč, Ĺ., Mock, A., Ĺupitáčik, P. & Palacios-Vargas, J.G. (2002) Distribution of Eukoenenia spelaea (Peyerimhoff, 1902) (Arachnida, Palpigradida) in the Western Carpathians with remarks on its biology and behavior. In: Tajovskyì, K., Balík, V. & Pižl, V. (Eds.), Studies on Soil Fauna in Central Europe, České Budějovice,2002, pp. 93–99.

    Mayoral, J.G. & Barranco, P. (2013) Rediscovery of the troglobious palpigrade Eukoenenia draco (Peyerimhoff 1906) (Palpigradi: Eukoeneniidae), with notes on the adaptations to a cave-dwelling life. Zootaxa, 3635 (2), 174–184.

    https://doi.org/10.11646/zootaxa.3635.2.5

    Mayoral, J.G. & Barranco, P. (2017) A cave-dwelling Iberian palpigrade (Arachnida: Palpigradi) of the Eukoenenia mirabilis group. Zootaxa, 4363 (4), 561–568.

    https://doi.org/10.11646/zootaxa.4363.4.8

    Mello-Leitão, C. De & Arlé, R. (1935) Considerações da Ordem Palpigradi com a descrição de uma nova espécie. Anais da Academia Brasileira de Ciências, 7, 339–343.

    Peyerimhoff, P. (1906) Sur l’existence à Majorque du genre Kaenenia [sic] (Arachn. Palpigradi). Annales de la Société Entomologique de France, 75, 300–302.

    Rowland, J.M. & Sissom, W.D. (1980) Report on a fossil palpigrade from the Tertiary of Arizona, and a review of the morphology and systematics of the order (Arachnida). The Journal of Arachnology, 8, 69–86.

    Smrž, J., Kováč, Ĺ., Mikeš, J. & Lukešová, A. (2013) Microwhip Scorpions (Palpigradi) Feed on Heterotrophic Cyanobacteria in Slovak Caves—A Curiosity among Arachnida. PLoS ONE, 8 (10), e75989.

    https://doi.org/10.1371/journal.pone.0075989

    Souza, M.F.V.R. & Ferreira, R.L. (2010) Eukoenenia (Palpigradi: Eukoeneniidae) in Brazilian caves with the first troglobiotic palpigrade from South America. The Journal of Arachnology, 38, 415–424.

    https://doi.org/10.1636/Ha09-112.1

    Souza, M.F.V.R. & Ferreira, R.L. (2011a) A new species of Eukoenenia (Palpigradi: Eukoeneniidae) from Brazilian iron ore caves. Zootaxa, 2886 (1), 31–38.

    https://doi.org/10.11646/zootaxa.2886.1.3

    Souza, M.F.V.R. & Ferreira, R.L. (2011b) A new troglobitic Eukoenenia (Palpigradi: Eukoeneniidae) from Brazil. The Journal of Arachnology, 39, 185–188.

    https://doi.org/10.1636/Ha10-43.1

    Souza, M.F.V.R. & Ferreira, R.L. (2012a) A new highly troglomorphic species of Eukoenenia (Palpigradi: Eukoeneniidae) from tropical Brazil. The Journal of Arachnology, 40, 151–158.

    https://doi.org/10.1636/Ha11-26.1

    Souza, M.F.V.R. & Ferreira, R.L. (2012b) Eukoenenia virgemdalapa (Palpigradi: Eukoeneniidae): a new troglobitic palpigrade from Brazil. Zootaxa, 3295 (1), 59–64.

    https://doi.org/10.11646/zootaxa.3295.1.3

    Souza, M.F.V.R. & Ferreira, R.L. (2013) Two new species of the enigmatic Leptokoenenia (Eukoeneniidae: Palpigradi) from Brazil: first record of the genus outside intertidal environments. PLoSONE, 8, e77840.

    https://doi.org/10.1371/journal.pone.0077840

    Souza, M.F.V.R. & Ferreira, R.L. (2016) Two new troglobiotic palpigrades (Palpigradi: Eukoeneniidae) from Brazil. Zootaxa, 4171 (2), 246–258.

    https://doi.org/10.11646/zootaxa.4171.2.2

    Souza, M.F.V.R. & Ferreira, R.L. (2018) Pandora is on Earth: new species of Eukoenenia (Palpigradi) emerging at risk of extinction. Invertebrate Systematics, 32, 581–604.

    https://doi.org/10.1071/IS17049

    Souza, M.F.V.R. & Ferreira, R.L. (2019a) Eukoenenia ibitipoca: the firs troglobitic Palpigradi Palpigradi (Arachnida) from a quartzitic cave. Zootaxa, 4656 (3), 431–444.

    https://doi.org/10.11646/zootaxa.4656.3.2

    Souza, M.F.V.R. & Ferreira, R.L. (2019b) Eukoenenia igrejinha (Palpigradi: Eukoeneniidae), a new cave–dwelling palpigrade from southeastern Brazil. The Journal of Arachnology, 47, 360–369.

    https://doi.org/10.1636/0161-8202-47.3.360

    Souza, M.F.V.R. & Ferreira, R.L. (2020) Three new cave-dwelling Eukoenenia (Palpigradi: Eukoeneniidae) from limestone caves in Northern Minas Gerais state, Brazil. Zootaxa, 4808 (2), 251–283.

    https://doi.org/10.11646/zootaxa.4808.2.2