Vipera berus bosniensis
subspecies of reptile

Vipera berus bosniensis, the Balkan cross adder or Bosnian viper, is a venomous subspecies of viper endemic to the Balkan Peninsula.
Geographic range
It is only found within the Balkan Peninsula, particularly the Herzegovina region of Bosnia and Herzegovina, hence its common name.
Taxonomy
McDiarmid et al. (1999) follow Golay et al. (1993) and recognize V. b. bosniensis as a subspecies of V. berus. However, it has been considered a full species in recent literature.
References
Further reading
External links
Vipera berus at the Reptarium.cz Reptile Database. Accessed 21 November 2007.
Begin with the source’s own compact description: “Vipera berus bosniensis” is subspecies of reptile. The dossier treats that line as a proposition to test through Vipera, berus and bosniensis, not as a finished interpretation.
Why this record matters
The phrase “subspecies 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.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Feb 21, 2026. The linked authority identifier is Q3511654. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1999, 1993 and 2007.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. 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
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Vipera berus bosniensis”, its source revision and the description used here.
- Expand the search: follow Vipera berus bosniensis primary sources, Vipera berus bosniensis archive and Vipera research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Vipera berus bosniensis”?
- Which cited source is closest to the event, object or claim?
- What terminology or title could unlock a more precise catalogue search?
Search terms from this dossier
This entry incorporates text from “Vipera berus bosniensis” 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.