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Pomacea scalaris

species of Gastropoda

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMay 21, 2026
Entity authorityQ20901343 ↗
Source-derived summary

Pomacea scalaris is a species of freshwater snail of the Ampullariidae ("apple snails") family. It was described by Alcide d'Orbigny in 1835. It is found in Bolivia, Paraguay, Argentina, Brasil, and Uruguay. It is invasive in Taiwan. First documented in 1989, it was possibly introduced alongside Pomacea canaliculata illegally brought to the country for aquaculture.

Pomacea scalaris can grow to a shell length of at least 31 mm (1.2 in).

References

External links

Simone, L. R. L. (2006). Land and Freshwater Molluscs of Brazil. Editora Grafíca Bernardi, FAPESP. São Paulo, 390 pp.

Editorial summary

Begin with the source’s own compact description: “Pomacea scalaris” is species of Gastropoda. The dossier treats that line as a proposition to test through Pomacea, scalaris and species, not as a finished interpretation.

Editorial reviewA practical orientation to terminology and classification, particularly when read beside dated observations, specimens or technical literature. The current lead gives the account dated anchors—1835, 1989, 2006—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Pomacea, scalaris and species is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “species of Gastropoda” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated May 21, 2026. The linked authority identifier is Q20901343. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1835, 1989 and 2006.

Critical limits

A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.

Best used for
  • Current terminology
  • Classification context
  • Finding cited technical literature
Verify next

Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.

Three-step research path

  1. Establish the record: confirm the title “Pomacea scalaris”, its source revision and the description used here.
  2. Expand the search: follow Pomacea scalaris primary sources, Pomacea scalaris archive and Pomacea research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Pomacea scalaris”?
  2. Which observation, specimen, dataset or publication supports the account?
  3. Is the terminology current, historical or disputed?
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Source & attribution

This entry incorporates text from “Pomacea scalaris” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.