Puff-faced Water Snake (Homalopsis buccata)
Jalan Lekar, 27th July 2017

This photograph of a juvenile Puff-faced Water Snake roadkill was shared by Sumita Thiagarajan.

Find out how you can contribute to Monday Morgue too.

Road kill. Highland of Pahang.

Speckle-bellied Keelback (Rhabdophis chrysargos)

Source: Kurt Orion G Facebook

  • Fig. 1. Dorsal view of entire carcass of the Rainbow Water Snake.
  • Fig. 2. View of the snake’s head and anterior section, showing the large wound in the neck.

Photographs by Ivan W.M. Kwan

Rainbow Water Snake (Enhydris enhydris) at Sungei Buloh Wetland Reserve

Location, date and time: Singapore Island, Sungei Buloh Wetland Reserve, pond at Wetland Centre; 14 November 2014; 0940 hrs.

Observation: A fresh carcass measuring about 40 cm total length was found at the edge of the pond (Fig. 1). Apart from a large wound in the neck region (indicated by an arrow in Fig. 2), no other external injury was
detected.

Remarks: The carcass has been collected and deposited in the Zoological Reference Collection (ZRC) of the Lee Kong Chian Natural History Museum at the National University of Singapore. It is not known what caused the wound on the subject, or if it had succumbed from the injury. The Rainbow Water Snake is believed to be a recent introduction to Singapore, possibly imported as accidental stowaways among aquatic and marsh vegetation by plant nurseries in the area (Lim & D’Rozario, 2009). It has been recorded from the north-western corner of Singapore Island since 2008 by Lim & D’Rozario (2009), Chua (2010: 101, misidentified as
Xenopeltis unicolor) and Baker & Thomas (2013).

References:

  • Baker, N. & N. Thomas, 2013. Rainbow Mud Snakes at Kranji Marsh. Singapore Biodiversity Records. 2013: 47.
  • Chua E. K., 2010. Wetlands in a City. The Sungei Buloh Wetland Reserve. Simply Green, Singapore. 176 pp
  • Lim, K. K. P. & V. D’Rozario, 2009. The Rainbow Mud Snake, Enhydris enhydris (Schneider) [Reptilia: Squamata: Homalopsidae] in Singapore. Nature in Singapore. 2: 9–12.

Source: Singapore Biodiversity Records 2015: 102-103

Photograph by Erwin Chan

Striped Keelback (Xenochrophis vittatus) eating Asian Toad (Duttaphrynus melanostictus)

Location, date and time: Singapore Island, Jalan Bahtera in compound of Sarimbun Scout Camp; 9 December 2014; around 1600 hrs.

Observation: A Striped Keelback of about 70 cm total length was found freshly dead and in the middle of swallowing an Asian Toad. The accompanying picture shows the anterior part of the dead snake with the hind limbs of the toad sticking out of its mouth.

Remarks: The Striped Keelback is an introduced species in Singapore where it inhabits rural and suburban areas. It is known to feed on frogs and small fishes (Baker & Lim, 2012: 114). The present observation confirms that it also eats toads. The cause of the snake’s death is unknown.

References:

  • Baker, N. & K. K. P. Lim, 2012. Wild Animals of Singapore. A Photographic Guide to Mammals, Reptiles, Amphibians and Freshwater Fishes. Updated edition. Draco Publishing & Distribution Pte. Ltd. and Nature Society (Singapore).

Source: Singapore Biodiversity Records 2015: 55

Striped Keelback (Xenochrophis vittatus)
Sungei Buloh, 23rd April 2014

This dying Striped Keelback was found on the road at the entrance to Sungei Buloh Wetland Reserve by Mohamed Bari. It’s likely that it was mortally wounded after getting run over by a passing motor vehicle.

It has been found that the genus Xenochrophis is not monophyletic, as the Striped Keelback is more closely related to other keelbacks of the genus Rhabdophis than it is to other Xenochrophis keelback species.

Fig. 1. Dorsal view of ZRC 2.7085.
Fig. 2. Ventral view of ZRC 2.7085, with the retrieved food item, a Clarias leiacanthus.
Photographs by Tan Heok Hui

A food item of the Blackwater Mud Snake (Phytolopsis punctata)

Location, date and time: Singapore Island, Central Catchment Nature Reserve, Nee Soon swamp forest; 22 November 2014.

Observation: A large adult female example of 63.5 cm snout-vent length and 72.0 cm total length was found dead in a submerged trap used for an on-going biodiversity survey. Upon dissection, a Forest Walking Catfish (Clarias leiacanthus) of 13.6 cm standard length (from snout tip to tail base) was retrieved. The pectoral spine of the ingested catfish had pierced through the gut wall of the snake, but not yet through the skin. The snake is presumed to have died either from asphyxiation or from the puncture of its gut wall by its ingested prey.

Remarks: The occurrence of the Blackwater Mud Snake in Singapore is first recorded by Thomas et al. (2014) based on two smaller examples obtained at the same general area. The natural history of this apparently rare species is virtually unknown, except it is typically associated with acid-water and peat swamps (Murphy, 2007: 162, as Enhydris punctata). Clarias leiacanthus appears to be the first recorded food item of this snake. The present specimen, catalogued as ZRC.2.7085, is deposited in the Zoological Reference Collection of the Lee Kong Chian Natural History Museum at the National University of Singapore.

References:

  • Murphy, J. C., 2007. Homalopsid snakes: Evolution in the mud. Krieger Publishing Company, Malabar, Florida, USA. 249 pp.
  • Thomas, N., T. Li, W. Lim & Y. Cai, 2014. New record of the blackwater mud snake in Singapore. Singapore Biodiversity Records. 2014: 309-310.

Source: Singapore Biodiversity Records 2014: 311-312