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Dipsas lavillai

species of snake

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMay 20, 2026
Entity authorityQ107054691 ↗
Source-derived summary

Dipsas lavillai, also known commonly as the neotropical tree snake and dormideira in Brazilian Portuguese, is a species of non-venomous snake in the subfamily Dipsadinae of the family Colubridae. The species is native to central South America.

Etymology

The specific name, lavillai, is in honor of Argentinian herpetologist Esteban Orlando Lavilla.

Geographic range

D. lavillai is found in Argentina, Bolivia, Brazil, and Paraguay.

Habitat

The preferred natural habitat of D. lavillai is forest, at altitudes of 2,800–4,100 m (9,200–13,500 ft).

Description

The head of D. lavillai is only slightly distinct from the neck. The eye is not visible from below. The body is cylindrical to subcylindrical in cross-section. The dorsal scales are arranged in 15 rows throughout the length of the body. The anal plate is entire (undivided).

Editorial summary

This brief starts where responsible research should: with the source description of “Dipsas lavillai” as species of snake. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewUseful for establishing the present vocabulary of the subject while preserving a route back to the evidence on which that vocabulary rests. The current 128-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. The account is most persuasive where Dipsas, lavillai and species can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the science & nature register because the source frames it as species of snake. Its deeper value depends on whether names, dates, institutions and citations support that framing.

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 20, 2026. The linked authority identifier is Q107054691. None of the 0 selected statements returned an explicit reference.

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.

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Three-step research path

  1. Establish the record: confirm the title “Dipsas lavillai”, its source revision and the description used here.
  2. Expand the search: follow Dipsas lavillai primary sources, Dipsas lavillai archive and Dipsas 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

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Source & attribution

This entry incorporates text from “Dipsas lavillai” 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.