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Issue: Vol. 4282 No. 2: 26 Jun. 2017
Type: Article
Published: 2017-06-26
DOI: 10.11646/zootaxa.4282.2.10
Page range: 374–384
Abstract views: 167
PDF downloaded: 4

First Velarifictorus (Orthoptera: Gryllidae, Gryllinae) cricket described from Borneo (Southeast Asia) and notes on a co-occurring congener

Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543, Republic of Singapore.
Zoological Research Museum Alexander Koenig, Adenauerallee 160, D-53113 Bonn, Germany.
Institute for Biodiversity and Environmental Research, Universiti Brunei Darussalam, Jalan Universiti, BE1410, Brunei Darussalam.
Orthoptera new species species distribution model MaxEnt biogeography Brunei Darussalam

Abstract

Based on newly collected specimens from Brunei, a new species of Velarifictorus Randell, 1964 is described: Velarifictorus temburongensis sp. nov. This represents the first species of the genus Velarifictorus to be described from Borneo. Unexpectedly, the more widespread species Velarifictorus aspersus aspersus (Walker, 1869) was found together with the new species in the same locality, representing a new locality record for V. aspersus in Brunei. We used MaxEnt modelling to test if it was likely that this species occurs in Ulu Temburong and Borneo based on a set of bioclimatic predictors. While MaxEnt modelling showed that V. aspersus can occur in Borneo, it did not convincingly predict its occurrence in Ulu Temburong where it was found. Based on the model, maximum temperature of warmest month, minimum temperature of coldest month and annual precipitation are important bioclimatic variables to predict the distribution.

 

References

  1. Chopard, L. (1969) Grylloidea. In: Sewell, R.B.S. (Ed.), The fauna of India and the adjacent countries. Orthoptera. Vol. 2. Zoological Survey of India and Baptist Mission Press, Calcutta, pp. i–xviii + 1–421 + 1.

    Cigliano, M.M., Braun, H., Eades, D.C. & Otte, D. (2017) Orthoptera species file online. Version 5 (5.0). Availabelf rom: http://orthoptera.speciesfile.org/HomePage/Orthoptera/HomePage.aspx (accessed 30 May 2017)

    Elith, J., Kearney, M. & Phillips, S. (2010) The art of modeling range-­shifting species. Methods in Ecology and Evolution, 1, 330–342.
    https://doi.org/10.1111/j.2041-210X.2010.00036.x

    Elith, J., Phillips, S.J., Hastie, T., Dudík, M., Chee, Y.E. & Yates, C.J. (2011) A statistical explanation of MaxEnt for ecologists. Diversity and Distribution, 17, 43–57.
    https://doi.org/10.1111/j.1472-4642.2010.00725.x

    Gorochov, A.V. (2015) Evolution and taxonomic significance of the copulatory apparatus in Ensifera (Orthoptera). Part 2: Male genitalia in Grylloidea. Zoosystematica Rossica, 24 (1), 31–41.

    Hijmans, R.J., Cameron, S.E., Parra, J.L., Jones, P.G. & Jarvis, A. (2005) Very high resolution interpolated climate surfaces for global land areas. International Journal of Climatology, 25, 1965–1978.
    https://doi.org/10.1002/joc.1276

    Ingrisch, S. (1998) The genera Velarifictorus, Modicogryllus and Mitius in Thailand (Ensifera: Gryllidae, Gryllinae). Insect Systematics & Evolution, 29 (3), 315–359.

    https://doi.org/10.1163/187631298X00122

    Phillips, S.J. (2006) A brief tutorial on MaxEnt. Available from: http://www.cs.princeton.edu/~schapire/maxent/tutorial/tutorial.doc (accessed 30 May 2017)

    Phillips, S.J., Anderson, R.P. & Schapire, R.E. (2006) Maximum entropy modeling of species geographic distributions. Ecological Modelling, 190, 231–259.
    https://doi.org/10.1016/j.ecolmodel.2005.03.026

    Phillips, S.J. & Dudík, M. (2008) Modeling of species distributions with MaxEnt: new extensions and a comprehensive evaluation. Ecography, 31, 161–175.
    https://doi.org/10.1111/j.0906-7590.2008.5203.x

    Phillips, S.J., Dudík, M., Elith, J., Graham, C.H., Lehmann, A., Leathwick, J. & Ferrier, S. (2009) Sample selection bias and presence-­only distribution models: implications for background and pseudo-absence data. Ecological Applications, 19, 181–197.
    https://doi.org/10.1890/07-2153.1

    SysTax (2015) SysTax 5 - an integrated, concept based database system for biodiversity data (2016). http://www.systax.org/en/

    Tan, M.K. (2010) Orthoptera in Pulau Ubin. Nature in Singapore, 3, 245–268.

    Tan, M.K. (2012) Orthoptera in the Bukit Timah and Central Catchment Nature Reserves (Part 2): Suborder Ensifera. Raffles Museum of Biodiversity Research, National University Singapore, Singapore, 70 pp. [uploaded 14 November 2012]

    Tan, M.K., Choi, J. & Shankar, N. (2017) Trends in new species discovery of Orthoptera (Insecta) from Southeast Asia. Zootaxa, 4238 (1), 127–134.
    https://doi.org/10.11646/zootaxa.4238.1.10

    Tan, M.K. & Kamaruddin, K.N. (2014) Orthoptera of Fraser’s Hill, Peninsular Malaysia. Lee Kong Chian Natural History Museum, National University of Singapore, Singapore, 88 pp. [uploaded 5 August 2014]

    Tan, M.K. & Kamaruddin, K.N. (2016) A contribution to the knowledge of Orthoptera diversity from Peninsular Malaysia: Bukit Larut, Perak. Zootaxa, 4111 (1), 21–40.
    https://doi.org/10.11646/zootaxa.4111.1.2