Keeled Rat Snake

distribution

PHILIPPINE DISTRIBUTION (Map 32 A [p. 143]). — Palawan. GENERAL DISTRIBUTION (OTHER THAN PHILIPPINES). — Widely distributed throughout southeastern Asia (see Wallach, Williams, and Boundy [2014: 604] for details).

Synopsis of the Snakes of the Philippines A Synthesis of Data from Biodiversity Repositories, Field Studies, and the Literature

materials_examined

TYPE LOCALITY AND TYPE SPECIMEN (S). — restricted to Borneo by Günther (1864: 256). Lectotype: BMNH 1946.1.11.35 (designated by Günther [1864: 256]).

Synopsis of the Snakes of the Philippines A Synthesis of Data from Biodiversity Repositories, Field Studies, and the Literature

discussion

Remarks. From early on, the occurrence of P. carinata in Singapore was known only from Boulenger (1893) who first reported it based on a specimen deposited at NHMUK collected by Dennys, and by Hanitsch (1898) who noted that this species is represented in the the Raffles Museum collection. However, the LKCNHM only has specimens from 1899, 1922, 1926, 1933, 1986, 1987, and two from 2008. After Hanitsch (1898), P. carinata was only next reported 90 years later (Table 2) from a live specimen detected at SRF on 26 June 1988 (Lim & Lim 1988 a). That same year, another was seen at Singapore Zoo on 6 September 1988 (Lim & Lim 1988 b), and on Mandai Lake Road on 23 December 1988 (Lim & Lim 1988 c). Subsequent observations include a mating pair at BTNR on 12 February 1989 (Lim & Lim 1989), two seen at NSSF and SRF (Lim 1990 a), two seen at BTNR and RRR (Lim 1993 a), one observed eating a D. caudolineatus at MNF on 8 May 1994 (Subaraj et al. 1995), a roadkill at BTNR on October 1995 (Lim 1995), and Teo & Rajathurai (1997) noted a total of 21 records during their survey, some which likely include the antecedent records. Nowadays, P. carinata is considered common (Teo & Rajathurai 1997; Baker &

Singapore’s herpetofauna: updated and annotated checklist, history, conservation, and distribution

materials_examined

Singapore conservation status. Vulnerable. Conservation priority. Highest. IUCN conservation status. Least Concern [2012]. LKCNHM & NHMUK Museum specimens. Singapore (no locality): BMNH 1880.9. 10.2 (no date); Bukit Timah: ZRC. 2.4555 (Feb- 1922); Bukit Timah Nature Reserve: ZRC. 2.6169 (no date); Hindhede Drive: ZRC. 2.2305 (21 - Feb- 1986), ZRC. 2.2306 (08 - Oct- 1987); Impounding [MacRitchie] Reservoir: ZRC. 2.4551 (1899); Old Upper Thomson Road: ZRC. 2.6735 (22 - Jul- 2008); Singapore Golf Club [SICC]: ZRC. 2.4549 (21 - Dec- 1933); Thomson Road Reservoir [MR]: ZRC. 2.4547 (May- 1926); Upper Seletar Reservoir Road: ZRC. 2.6713 (11 - Jul- 2008). Additional Singapore museum specimens. Singapore (no locality): AMNH. Singapore localities. Bukit Timah (not specified) — Bukit Timah Nature Reserve — Dairy Farm Nature Park — Hindhede Drive — MacRitchie North Forest — MacRitchie Reservoir — Mandai Lake Road — Mandai Track 15 — Nee Soon Swamp Forest — Old Upper Thomson Road — Rifle Range Road — Sime Road Forest — Singapore Island Country Club — Singapore Zoo — Thomson Nature Park — Upper Seletar Reservoir Road.

Singapore’s herpetofauna: updated and annotated checklist, history, conservation, and distribution