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Colubridae · Global account with Philippine editorial coverage

Specklebelly Keelback

Rhabdophis chrysargos(SCHLEGEL, 1837)

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

The diagnosis reports 19 midbody scale rows, mostly keeled, and enlarged rear maxillary teeth. These structural features alone do not quantify the consequences of a bite. Its atlas account links 3 named island or island-group records to the source literature.

OccurrenceConfirmed
Islands named3
Natural history4 sourced topics
References3

Literature updated 2026-10-07 · Editorial review pending

Explore the island records ↓

Species portrait

Rhabdophis chrysargos

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The illustrated collection

Adult & juvenile

Adult · study plate

Rhabdophis chrysargos

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Juvenile · study plate

Rhabdophis chrysargos

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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.

One species · Across borders

Global distribution

Explore the recorded countries and islands. Select a highlighted area to see its distribution evidence.

Recorded distribution

Loading geographic boundaries…

ListedIntroducedUncertain

Click a highlighted country to zoom in and explore its records.

Shading identifies recorded countries or named islands, not continuous habitat coverage. Uncoloured areas do not establish absence.

Natural Earth · 1:50m · public domain. Small islands may lack an outline.

Explore the distribution

Across borders

10 recorded countries & territories

Select a highlighted area to see its status, island records and sources. Each country and island links to the same shared species collection.

Use “Worldwide records” to include distant introduced and uncertain records in the map view.

Indonesian locality notes and qualifications
Sumatra
Sumatra; Mentawai; Nias; Simeulue
Java & Bali
Java; Bali
Kalimantan
Kalimantan
Lesser Sundas
Flores
Maluku
Ternate

Sulawesi records are doubtful and excluded from regional tags.

A closer look

Natural history & identification

Appearance & identification

The diagnosis reports 19 midbody scale rows, mostly keeled, and enlarged rear maxillary teeth. These structural features alone do not quantify the consequences of a bite.

Evidence & scope

Literature documented · Diagnosis

Species-level database summary; literature review, not expert validation.

The cited account does not establish population-wide variation or the conditions at every Philippine locality.

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 Rhabdophis chrysargos from these named Philippine areas: Palawan, Busuanga, Balabac. 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

Rhabdophis chrysargos is retained in the atlas’s dated checklist under Colubridae. The authority is (SCHLEGEL 1837). 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
Rhabdophis chrysargos — all named islandsPalawanBusuangaBalabac

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

3 named islands / island groups

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

Distribution record & sources

Brunei Darussalam; Indonesia (Anambas Archipelago, Bali, Flores, Java, Kalimantan, Mentawai Archipelago, Nias, Simeulue, Sumatra, Ternate, Borneo, ), Philippines (Balabac, Culion, Busuanga, Palawan), Laos, S Burma (Myanmar), S Thailand, Cambodia, Vietnam (Hoa Binh), Malaysia (Malaya and East Malaysia, Pulau Tioman); China (Hainan) Type locality: “Java”; “Mt. Megamendung, Westjava” (fide MANTHEY & GROSSMANN 1997)

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 ↗

Rhabdophis chrysargos — 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
Rhabdophis chrysargos
Common names
Specklebelly Keelback · Gefleckte Wassernatter
Authority
(SCHLEGEL 1837)
Year described
1837
Taxonomic status
Accepted species
Family
Colubridae
Subfamily
Natricinae
Genus
Rhabdophis
Species epithet
chrysargos
Persistent ID
PH-SERP-75E3C19D73
Checklist checked
2026-09-05

Philippine occurrence

Status
Present
Confidence
Confirmed
Basis
2018 Philippine synopsis treatment plus current RDB listing
Islands named
Palawan, Busuanga, Balabac

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

Source distribution statement

Brunei Darussalam; Indonesia (Anambas Archipelago, Bali, Flores, Java, Kalimantan, Mentawai Archipelago, Nias, Simeulue, Sumatra, Ternate, Borneo, ), Philippines (Balabac, Culion, Busuanga, Palawan), Laos, S Burma (Myanmar), S Thailand, Cambodia, Vietnam (Hoa Binh), Malaysia (Malaya and East Malaysia, Pulau Tioman); China (Hainan) Type locality: “Java”; “Mt. Megamendung, Westjava” (fide MANTHEY & GROSSMANN 1997)

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

Tropidonotus chrysargos SCHLEGEL 1837: 3 Natrix chrysargus H. BOIE in F. BOIE 1827 (nomen nudum) Tropidonotus junceus CANTOR 1847 Tropidonotus junceus — BLYTH 1856: 716 Amphiesma chrysargos — JAN 1863 Amphiesma chrysargum — DUMÉRIL, BIBRON & DUMÉRIL 1854: 739 Leptophis albomaculatus — DUMÉRIL, BIBRON & DUMÉRIL 1854: 541 Tropidonotus chrysargus — GÜNTHER 1858 Tropidonotus junceus — GÜNTHER 1864 Tropidonotus (Amphiesma) chrysargus — BOETTGER 1883 Tropidonotus chrysargos — FISCHER 1885: 3 Tropidonotus (Amphiesma) chrysargus var. juncea — BOETTGER 1887 Tropidonotus maculatus var. torquatus MOCQUARD 1890: 139 Tropidonotus chrysargus — BOULENGER 1893: 258 Natrix chrysarga — STEJNEGER 1907: 265 Tropidonotus chrysargus — WALL 1909: 145 Tropidonotus chrysargus — LIDTH DE JEUDE 1922: 243 Natrix chrysarga — TAYLOR 1922: 87 Natrix chrysargus — SMITH 1922: 265 Rhabdophis chrysargus — WALL 1923 Natrix chrysarga — SMEDLEY 1932 Natrix crysarga (sic) — MERTENS 1934 Rhabdophis chrysargus chrysargus — BOURRET 1936 Natrix chrysarga — SMITH 1943 Rhabdophis chrysarga — MALNATE 1960 Rhabdophis chrysargus — TAYLOR 1965: 862 Natrix chrysarga — HENDRICKSON 1966: 67 Rhabdophis chrysargus — GRANDISON 1978: 293 Rhabdophis chrysarga — MANTHEY & DENZER 1982 Rhabdophis chrysargos — MANTHEY & GROSSMANN 1997: 387 Rhabdophis chrysargus [sic] — COX et al. 1998: 46 Rhabdophis chrysarga — STUEBING & INGER 1999 Rhabdophis chrysargos — ZIEGLER 2002: 256 Rhabdophis chrysargos — WALLACH et al. 2014: 634

Taxonomic and source notes

Some species of this genus are venomous although this particular species may be harmless (Peter Verhaart, pers. comm.). Distribution: The latest record of this species from Sulawesi is from SCHLEGEL 1837. Specimens also may have been confused with R. chrysargoides. DE LANG & VOGEL (2005) thus consider this species as doubtful for this island. Not in Hong Kong fide Francis 2021. Synonymy: partly fide BOULENGER 1891. Behavior: diurnal.

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.

Rhabdophis chrysargos — 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 ↗