Red List of South African Species

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Least Concern (LC)
Assessors: Bryan Maritz Johan Marais
Facilitators: Graham Alexander Krystal Tolley
Reviewers: Michael Bates Juan-Jacques Forgus Krystal Tolley Luke Verburgt Josh Weeber

Rationale (Changed due to Same category and criteria)

This subspecies is not often encountered within its restricted range, probably because of its fossorial habits (it lives in deep sand). It occupies a relatively small range (extent of occurrence ca. 6,000 km2), however, it is not thought to experience any significant threats and is therefore listed as Least Concern .

Distribution

Subspecies australis is endemic to the Waterberg Range of Limpopo Province, South Africa. Found mainly in the vicinity of Nylsvley and Bela-Bela (Jacobsen 1989, Broadley 1990, Branch 1998, Bates et al. 2014).

Decline

Distribution remains largely intact.

Population trend

Trend

Information on population size and trend are not currently available.

Threats

There was habitat destruction for agricultural purposes in the past, but there are no known current threats.

Uses and trade

There is no known utilization.

Conservation

Molecular analysis of relationships among the various subspecies of Xenocalamus bicolor is required.

References 

[@book{612,
 address = {Pretoria},
 author = {Bates, M.F., Branch, W.R., Bauer, A.M., Burger, M., Marais, J., Alexander, G.J. and de Villiers, M.S.},
 publisher = {Suricata 1. South African National Biodiversity Institute},
 title = {Atlas and Red List of the Reptiles of South Africa, Lesotho and Swaziland},
 year = {2014}
}
,@book{2817,
 address = {Cape Town},
 author = {Branch, W.R.},
 publisher = {Struik Publishers},
 title = {Field Guide to Snakes and Other Reptiles of Southern Africa. Second Edition},
 year = {1998}
}
,@techreport{5336,
 address = {Pretoria, South Africa},
 author = {Jacobsen, N.H.G.},
 institution = {Chief Directorate of Nature and Environmental Conservation},
 title = {The distribution and conservation status of reptiles and amphibians in the Transvaal. Final Report Project TN 6/4/1/30},
 year = {1989}
}
,@book{10242,
 address = {Parklands, South Africa},
 author = {Broadley, D.G.},
 publisher = {Jonathan Ball and Ad. Donker Publishers},
 title = {FitzSimons' Snakes of Southern Africa},
 year = {1990}
}
,@book{23102,
 address = {Frankfurt am Main},
 author = {Broadley, D.G. and Blaylock, R.},
 publisher = {Edition Chimaira},
 title = {The Snakes of Zimbabwe and Botswana},
 year = {2013}
}
,]
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