A New Record of the Enigmatic Bornean Earless Monitor Lizard (Lanthanotus borneensis) from Brunei Darussalam with Notes on their Retreat Sites: Lanthanotus borneensis from Brunei Darussalam

Justin  JEFFREY; Jerry  S.H. WONG; Joremy   TONY; Ulmar  GRAFE

doi:10.51200/jtbc.v23i.6834

Authors

Justin JEFFREY Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Gadong BE1410, Brunei Darussalam.
Jerry S.H. WONG Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Gadong BE1410, Brunei Darussalam.
Joremy TONY Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Gadong BE1410, Brunei Darussalam.
Ulmar GRAFE Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Gadong BE1410, Brunei Darussalam.

DOI:

https://doi.org/10.51200/jtbc.v23i.6834

Keywords:

Borneo, herpetofauna, threatened taxa, reptiles

Abstract

This is a short note without an abstract.

References

Das I (2010) A Field Guide to the Reptiles of South-East Asia. New Holland Publishers. 376 pp.

Das I, Auliya M (2021) Lanthanotus borneensis. The IUCN Red List of Threatened Species 2021: e.T102342572A102342580. https://dx.doi.org/10.2305/IUCN.UK.2021-2.RLTS.T102342572A102342580.en. (Accessed 10 September 2025).

Das I, Yaakob N (2007) Status of knowledge of the Malaysian herpetofauna. In: Chua LSL, Kirton LG, Saw LG (eds.). Status of Biological Diversity in Malaysia and Threat Assessment of Plant Species in Malaysia. Kepong: Forest Research Institute Malaysia. Pp. 31–81.

Langner C (2017) Hidden in the heart of Borneo - shedding light on some mysteries of an enigmatic lizard: first records of habitat use, behavior, and food items of Lanthanotus borneensis Steindachner, 1878 in its natural habitat. Russian Journal of Herpetology 24:1–10.

LaPerriere JD, Martin CD (1986) Simplified method of measuring stream slope. Cold Regions Hydrology Symposium. American Water Resources Association Pp. 143–145.

Leah V, Min PY, Das I (2023) Thermal biology of Lanthanotus borneensis (Lanthanotidae) in Sarawak, Borneo. Amphibia-Reptilia 44: 509–515.

Leah V, Yong Min P, Das I (2025) Home range size and patterns of movement in Bornean earless monitors, Lanthanotus borneensis, in Sarawak, Borneo. Journal of Herpetology 59: 28–33.

Proud KRS (1978) Some notes on a captive earless monitor lizard Lanthanotus borneensis. Sarawak Museum Journal (new series) 26: 235–242.

Rahman S (2025) US proposes threatened listing for widely trafficked Borneo earless monitor. Mongabay 25 August 2025. https://news.mongabay.com/short-article/2025/08/us-proposes-threatened-listing-for-widely-trafficked-borneo-earless-monitor/ (Accessed 10 September 2025).

Rehák I, Velenský P, Zahradníčková V (2019) The earless monitor lizard (Lanthanotus borneensis) in European zoos – past, present, perspectives. Gazella 46: 31–53.

Rieppel, O (1980) The phylogenetic relationships of Lanthanotus: An inquiry into the fossil record. In: Rieppel O (ed.). The Phylogeny of Anguinomorph Lizards. Basel: Birkhäuser. Pp. 71–73. https://doi.org/10.1007/978-3-0348-9372-5_33.

Spranger RR, Raffel TR, Sinervo BR (2024) Canopy coverage, light, and moisture affects thermoregulatory trade-offs in an amphibian breeding habitat. Journal of Thermal Biology 122: 103864. https://doi.org/10.1016/j.jtherbio.2024.103864.

Stoner SS, Nijman V (2015) Captive maintenance and the first reproduction of Borneo Earless Monitors. (Lanthanotus borneensis). TRAFFIC Bulletin 27: 55–58.

Vergner I (2013) První nález varanovce bornejského ve východním Kalimantanu a další setkání se vzácným ještěrem. Živa, Praha 61: 131–133.

Weisenbacher A, Velensky P (2018) Lanthanotus borneensis in Vienna and Prague zoos. 20th (41th) EAZA Reptile TAG meeting Athens, Greece.

Yaap B, Paoli GD, Angki A, Wells PL, Wahyudi D, Auliya M (2012) First record of the Borneo Earless Monitor Lanthanotus borneensis (Steindachner, 1877)(Reptilia: Lanthanotidae) in West Kalimantan (Indonesian Borneo). Journal of Threatened Taxa 4: 3067–3074.