Xenodon neuwiedii
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~50% 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 Itatiaia National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 4th most-seen of the 7 reptiles we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
February and April
In those months about 40% of wildlife watchers report a Neuwied's False Fer-de-lance in Itatiaia National Park on a given day, against under 5% in May–August and November–December, the lowest months.
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.
Among the best
Of the 2 parks where we can rate Neuwied's False Fer-de-lance sightings, Itatiaia National Park ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in Serra dos Órgãos National Park (Brazil, about 20%).
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 Itatiaia 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.
