Dieurostus dussumieri
In 3 days ~20% in a week ~40%
Dieurostus is a genus of snake in the family Homalopsidae. The genus Dieurostus is monotypic, containing only the species Dieurostus dussumieri, commonly known as Dussumier's water snake, or the Kerala mud snake. The species, which is mildly venomous and rear-fanged, is endemic to Kerala, in southwestern India. It was formerly thought to be found in Bangladesh, although its distribution there is now disputed.
Both the specific name, dussumieri, and the common name, Dussumier's water snake, are in honor of Jean-Jacques Dussumier, a French merchant, ship owner, and collector of zoological specimens. Diagnosis (genus): Dieurostus is distinguished from all other homalopsids with 25 or 27 rows of smooth scales, nasal scales in contact, and posterior labials horizontally divided, by its divided internasal, upper labials 1–3 contacting the loreal, five lower labials contacting the chin shields (Homalophis doriae has upper labials 2–5 or 2–6 contacting the loreal), and its striped pattern (Ferania sieboldii has a blotched-banded dorsal pattern, the internasal may contact the loreal, and it has three lower labials contacting the chin shields) [after Kumar et... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kochi | 🇮🇳 India |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Thiruvananthapuram Zoo | 🇮🇳 India |
No species of the same family or order lives in Kochi, so these are its closest relatives here: other reptiles.
With luck
About 10% of wildlife watchers report a Kerala Mud Snake sighting in Kochi on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 16th most-seen of the 23 reptiles we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
March–May, July–August and November–December
In those months about 10% of wildlife watchers report a Kerala Mud Snake in Kochi on a given day, against under 5% in January–February, June and September–October, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Kerala Mud Snake sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Kochi, in our data
Kochi is the only city on Wallace's Line with enough records to rate Kerala Mud Snake sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Kerala Mud Snake is recorded against all the reptiles logged in Kochi (9 verified sightings), 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.
