Xenodon neuwiedii
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~60% in a week ~80%
Xenodon neuwiedii, also known commonly as Neuwied's false fer-de-lance, is a species of snake in the subfamily Dipsadinae of the family Colubridae. The species is native to eastern central South America. The specific name, neuwiedii, is in honor of German naturalist Prince Maximilian of Wied-Neuwied.
Xenodon neuwiedii is found in extreme northeastern Argentina, southeastern Brazil, and southeastern Paraguay. The preferred natural habitat of Xenodon neuwiedii is forest. Xenodon neuwiedii is terrestrial and diurnal. Xenodon neuwiedii preys predominately upon toads, but also upon other frogs.
Xenodon neuwiedii is oviparous. Boulenger, G.A. (1894). Catalogue of the Snakes in the British Museum (Natural History). Volume II. Containing the Conclusion of the Colubridæ Aglyphæ. London: Trustees of the British Museum (Natural History). (Taylor and Francis printers). xi + 382 pp. + Plates I–XX. (Xenodon neuwiedii, p. 148).
Freiberg, M. (1982). Snakes of South America. Hong Kong: T.F.H. Publications. ISBN 0-87666-912-7. 189 pp. (Xenodon neuwiedii, p. 113... Wikipedia →
Recording0:17
Brazil · 2025
© cliobr · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 2 | Itatiaia National Park | 🇧🇷 Brazil |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | São Paulo | 🇧🇷 Brazil |
Possible
About 20% of wildlife watchers report a Neuwied's False Fer-de-lance sighting in Serra dos Órgãos National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 7th most-seen of the 14 reptiles we can rate there. Over three days the chance rises to about 60%, and over a week to about 80%, if each day is a fresh chance.
June
In that month about 40% of wildlife watchers report a Neuwied's False Fer-de-lance in Serra dos Órgãos National Park on a given day, against under 5% in July, September and December–February, the lowest months. That is one of Serra dos Órgãos National Park's driest months, with about 65 mm of rain against 310 mm in November.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Neuwied's False Fer-de-lance sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Neuwied's False Fer-de-lance sightings, Serra dos Órgãos National Park has the highest daily chance: about 20%. Next come Itatiaia National Park (Brazil, about 20%).
Same family: Colubridae
The closest relatives of the Neuwied's False Fer-de-lance that you can see in Serra dos Órgãos National Park (family Colubridae, Colubrid Snakes) are Brown Sipo (about 30%), Military Ground Snake (about 30%) and Banded Cat-eyed Snake (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Neuwied's False Fer-de-lance is recorded against all the reptiles logged in Serra dos Órgãos National Park (8 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
