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Causus defilippii

species of reptile

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMay 19, 2026
Entity authorityQ2943180 ↗
Source-derived summary

Causus defilippii, also known commonly as the snouted night adder, is a species of venomous snake in the subfamily Viperinae of the family Viperidae. The species is native to East Africa and Southern Africa. Although its venom is nonlethal to humans, it is still considered medically significant. There are no subspecies that are recognized as being valid.

Etymology

The specific name, defilippii, is in honor of Italian zoologist Filippo De Filippi.

Description

The average total length (including tail) of C. defilippii is 20–35 cm (8–14 in), rarely exceeding 50 cm (20 in).

The head is short and wide, and the snout is prominent, pointed and upturned. The rostral is large. The eyes are medium-sized. The circumorbital ring consists of 1–2 preocular scales, 1–2 postoculars and 1–2 suboculars that separate the eye from the supralabials.

Editorial summary

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

Editorial reviewA sound reference starting point where classification, measurement and the date of the underlying evidence remain visible. The current 134-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. For this dossier, Causus, defilippii and species is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “species of reptile” 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 19, 2026. The linked authority identifier is Q2943180.

Critical limits

A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. 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
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Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.

Three-step research path

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