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Colubridae · Philippine record

Boie's Keelback

Tropidonophis spilogaster(BOIE 1827)

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

Taylor’s 1922 account, reproduced by the database, describes frogs as the principal prey. The observation is historical and does not quantify present-day feeding across the archipelago. Its atlas account links 4 named island or island-group records to the source literature.

OccurrenceSupported
Islands named4
Natural history4 sourced topics
References2

Literature updated 2026-10-07 · Editorial review pending

Explore the island records ↓

Species portrait

Tropidonophis spilogaster

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The illustrated collection

Adult & juvenile

Adult · study plate

Tropidonophis spilogaster

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Juvenile · study plate

Tropidonophis spilogaster

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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

Diet & foraging

Taylor’s 1922 account, reproduced by the database, describes frogs as the principal prey. The observation is historical and does not quantify present-day feeding across the archipelago.

Evidence & scope

Literature documented · Comment: Diet; Taylor (1922)

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 Tropidonophis spilogaster from these named Philippine areas: Luzon, Palawan, Polillo, Lubang. 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

Tropidonophis spilogaster is retained in the atlas’s dated checklist under Colubridae. The authority is (BOIE 1827). 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
Tropidonophis spilogaster — all named islandsLuzonPalawanPolilloLubang

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

4 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 (Bataan, Lubang, Luzon, Polillo, Palawan) Type locality: “Philippines” crebripunctatus: Type loc.: Manila, Philippines

The atlas records Tropidonophis spilogaster from these named Philippine areas: Luzon, Palawan, Polillo, Lubang. These are literature areas rather than a continuous range boundary.

The Reptile Database — species checklist, 17 June 2026 ↗Existing checklist occurrence statement and distribution review

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

The Reptile Database — species checklist, 17 June 2026 ↗

Tropidonophis spilogaster — 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
Tropidonophis spilogaster
Common names
Boie's Keelback
Authority
(BOIE 1827)
Year described
1827
Taxonomic status
Accepted species
Family
Colubridae
Subfamily
Natricinae
Genus
Tropidonophis
Species epithet
spilogaster
Persistent ID
PH-SERP-0E1B4DF7E8
Checklist checked
2026-09-05

Philippine occurrence

Status
Present
Confidence
Supported
Basis
current RDB country listing; primary-source review pending
Islands named
Luzon, Palawan, Polillo, Lubang

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

Source distribution statement

Philippines (Bataan, Lubang, Luzon, Polillo, Palawan) Type locality: “Philippines” crebripunctatus: Type loc.: Manila, Philippines

Knowledge coverage

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

Names through time

Nomenclatural trail

Tropidonotus spilogaster BOIE 1827: 535 Tropidonotus crebripunctatus WIEGMANN 1834: 250 Coluber (Tropidonotus) spilogaster — EYDOUX & GERVAIS 1837: 4 Tropidonotus spilogaster — DUMÉRIL, BIBRON & DUMÉRIL 1854: 598 Tropidonotus spilogaster — BOULENGER 1893: 257 Tropidonotus spilogaster — BOULENGER 1894: 83 Natrix spilogaster — TAYLOR 1922: 86 Natrix crebripunctata — TAYLOR 1922: 91 Rhabdophis spilogaster — HARDING & WELCH 1980 Rhabdophis spilogaster — BROWN et al. 2000 Rhabdophis spilogaster — WALLACH et al. 2014: 636 Rhabdophis spilogaster — MENESES et al. 2022 Tropidonophis spilogaster — DEEPAK et al. 2021 Tropidonophis spilogaster — ROBERTS et al. 2024

Taxonomic and source notes

Some species of this genus are venomous although we do not have information about this particular species. Synonymy: partly after Taylor 1922: 92, 291 BOIE 1826: 559 fide DUMÉRIL et al. 1854. Distribution: The species is common in Luzon. It has been reported from Negros and Palawan by Boulenger and from Mindanao by J. G. Fischer. Specimens in the collections examined are from Polillo, Luzon, and Camiguin (Babuyan Islands). (Taylor 1922) Diet: The species feeds almost wholly on frogs. It is frequently encountered in the city of Manila. (Taylor 1922)

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 ↗
n.d.

Tropidonophis spilogaster — 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 ↗