NATURAL HISTORY · CATALOGUE RECORD
Boie's Keelback
Tropidonophis spilogaster (Boie, 1827)
Source-backed taxonomic record
Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.
Open encyclopedia reference
Tropidonophis spilogaster, commonly known as the northern water snake or Boie's keelback, is a keelback snake in the family Colubridae found in the Philippines on the islands of Catanduanes, Polillo, Calayan and in the province of Bataan on the island of Luzon. The snake's venom toxicity is unknown due to lack of study.
Wikipedia contributors, Tropidonophis spilogaster; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T04:47:24.506955+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Tropidonophis spilogaster (Boie, 1827)
- Name authority
- (Boie, 1827)
- Common name
- Boie's Keelback
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Squamata
- Family
- Colubridae
- Genus
- Tropidonophis
- Extinction status
- Not supplied by this source
Classification family tree
Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumChordata
- subphylumVertebrata
- infraphylumGnathostomata
- parvphylumOsteichthyes
- megaclassTetrapoda
- classReptilia Laurenti, 1768
- orderSquamata Oppel, 1811
- suborderSerpentes Linnaeus, 1758
- infraorderAlethinophidia Nopcsa, 1923
- familyColubridae
- subfamilyNatricinae
- genusTropidonophis
- speciesTropidonophis spilogaster (Boie, 1827)
Close classified relatives
These entries share the source’s genus, Tropidonophis. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Bismarck keelbackTropidonophis hypomelas (Günther, 1877) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| PNG montane keelbackTropidonophis statisticus Malnate & Underwood, 1988 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Many-scaled keelbackTropidonophis multiscutellatus (Brongersma, 1948) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Common keelbackTropidonophis mairii (Gray, 1841) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Moluccan keelbackTropidonophis elongatus (Jan, 1865) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| North Irian montane keelbackTropidonophis montanus (Lidth de Jeude, 1911) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Tropidonotus crebripunctatus Wiegmann, 1834 Wiegmann, 1834 | ambiguous synonym |
| Tropidonotus spilogaster Boie, 1827 Boie, 1827 | synonym |
Documented distribution
Source distribution statements, not a complete range map. A listed locality is not necessarily a place of origin.
Source literature & publication evidence
References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.
- https://reptile-database.reptarium.cz/species?genus=Tropidonophis&species=spilogaster Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references
Origins, evidence & remaining research
Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.
Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record. A suitable sourced image remains to be added.
Dataset citation & attribution
This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11
Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.
Stable key: col:C8MMG. Classification follows source parent identifiers. English common names may vary by region.