← Species collection

Colubridae · Philippine record

Smooth-Scaled Mountain Rat Snake

Ptyas luzonensis(GÜNTHER 1873)

Length
Length not yet addedAtlas entry awaiting completion
Venom status
Venom classification not yet addedHuman effects: atlas summary awaiting completion
Known venom effects
Effects not yet summarised in this atlas

Ptyas luzonensis is a Colubridae snake included in the Philippine checklist. Its atlas account links 5 named island or island-group records to the source literature.

OccurrenceConfirmed
Islands named5
Natural history3 sourced topics
References3

Literature updated 2026-10-07 · Editorial review pending

Explore the island records ↓

Species portrait

Ptyas luzonensis

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Reserved for a contributor imageCredit and usage rights will accompany the image.

The illustrated collection

Adult & juvenile

Adult · study plate

Ptyas luzonensis

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Juvenile · study plate

Ptyas luzonensis

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Reserved for a contributor imageCredit and usage rights will accompany the image.

Life stages will be labelled from the contributor’s information. Images alone do not establish identification or a locality record.

Media provenance

Every image carries its source.

Contributor images are forthcoming. Photographs and illustrations will retain their individual credits, permissions and evidence notes.

A closer look

Natural history & identification

Reproduction

The species account records egg-laying reproduction. A verified Philippine clutch-size range, incubation interval and breeding calendar are not established here.

Evidence & scope

Literature documented · Reproduction field

Reproductive mode reported for this named species.

Mode alone does not establish litter or clutch size, seasonal timing, or captive husbandry requirements.

Philippine distribution

The atlas records Ptyas luzonensis from these named Philippine areas: Luzon, Leyte, Panay, Negros, Polillo. These are literature areas rather than a continuous range boundary.

Evidence & scope

Literature documented · Existing checklist occurrence statement and distribution review

The original evidence level is retained.

A country listing cannot establish an island or a precise locality.

Taxonomic context

Ptyas luzonensis is retained in the atlas’s dated checklist under Colubridae. The authority is (GÜNTHER 1873). Earlier names and the original source notes are preserved below for comparison.

Evidence & scope

Literature documented · Checklist identity and nomenclatural trail

Checklist verified 2026-09-05; not a newly revised taxonomic backbone.

Historical names can cover different biological concepts; synonyms should not be used to transfer records automatically.

Across the archipelago

Where this species is recorded

Philippines
Ptyas luzonensis — all named islandsLuzonLeytePanayNegrosPolillo

Documented islands: gold · island groups: dashed circles

Island-level records · not continuous habitat coverage. Dashed circles locate groups, not individual observations.

Philippine distribution

Documented places

5 named islands / island groups

Select an island to read its distribution record and sources. Uncoloured islands are not evidence of absence.

Distribution record & sources

Philippines (Negros, Luzon, Panay, Polillo, Leyte ?) Type locality: Luzon

References attached to this species account. Island-specific evidence is shown separately where available.

The Reptile Database — species checklist, 17 June 2026 ↗

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

Ptyas luzonensis — The Reptile Database species account ↗

Living with wildlife

Give this snake space.

Venom classification not yet added · Effects not yet summarised in this atlas

Observe from a distance. Do not handle, corner or capture a snake to identify it. An incomplete venom account is not evidence that a species is safe to handle.

After a suspected snakebite, keep the person still and arrange urgent medical care. Avoid tight tourniquets, cutting, suction and unproven remedies. Do not wait to identify the snake before seeking help.

WHO guidance on snakebite first aid

Species record

Taxonomy, occurrence & evidence.

Identity

Accepted name
Ptyas luzonensis
Common names
Smooth-Scaled Mountain Rat Snake
Authority
(GÜNTHER 1873)
Year described
1873
Taxonomic status
Accepted species
Family
Colubridae
Genus
Ptyas
Species epithet
luzonensis
Persistent ID
PH-SERP-78B82192CE
Checklist checked
2026-09-05

Philippine occurrence

Status
Present
Confidence
Confirmed
Basis
2018 Philippine synopsis treatment plus current RDB listing
Islands named
Luzon, Leyte, Panay, Negros, Polillo

Range noteCountry/island text is not a range polygon or locality record.

Source distribution statement

Philippines (Negros, Luzon, Panay, Polillo, Leyte ?) Type locality: Luzon

Knowledge coverage

EndemismResearch pending
EcologyResearch pending
VenomVenom classification not yet added
Effects not yet summarised in this atlas
Detailed research: Research pending
ConservationResearch pending

Names through time

Nomenclatural trail

Zaocys luzonensis GÜNTHER 1873 Zaocys luzonensis — BOULENGER 1893: 377 Zaocys luzonensis — TAYLOR 1922: 135 Zaocys luzonensis — BROWN & ALCALA 1970: 115 Zaocys luzonensis — GAULKE 2001: 30 Zaocys luzonensis — FERNER et al. 2001 Ptyas luzonensis — DAVID & DAS 2004 Zaocys luzonensis — GAULKE 2011: 316 Ptyas luzonensis — WALLACH et al. 2014: 617

References attached to this record

2026

The Reptile Database — species checklist, 17 June 2026

Uetz, P.; Freed, P.; Aguilar, R.; Reyes, F.; Kudera, J.; Hošek, J. (eds.)

Open source ↗
2018

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

Leviton, A. E.; Siler, C. D.; Weinell, J. L.; Brown, R. M.

Proceedings of the California Academy of Sciences 64(14): 399–568

DOI: 10.5281/zenodo.11512589

Open source ↗
n.d.

Ptyas luzonensis — The Reptile Database species account

Uetz, P.; Hallermann, J. et al. (editors)

Public species fields consulted for bounded biological summaries. Primary sources quoted within the database were not independently examined unless explicitly stated. The catalogue name may differ from the current source title.

Open source ↗