Trimeresurus purpureomaculatus
Silhouette: Steven Traver · PhyloPic
In 3 days ~40% in a week ~70%
Trimeresurus purpureomaculatus is a venomous pit viper species native to India, Bangladesh and Southeast Asia. Common names include: mangrove pit viper, mangrove viper, and shore pit viper. Males grow to a total length of 66.5 centimetres (26.2 in), females 90 centimetres (35 in). The maximum tail lengths are then 12.5 centimetres (4.9 in) and 14 centimetres (5.5 in) respectively.
Scales in 25-27 longitudinal rows at midbody; 11-13 upper labials, the first partially or completely united with the nasal; supraocular very narrow, sometimes broken into small scales, 12-15 scales between them; head scales small, subequal, tuberculate or granular; temporal scales keeled.
Body color highly variable: above olive, grayish, to dark purplish brown; below whitish, greenish or brown, uniform or spotted with brown; a light line on scale row one bordering ventrals present or absent; head olive, heavily suffused with brown.
Ventrals: males 160-179, females 168-183; subcaudals: males 74-76, females 56-63, paired; hemipenes without spines. Mangrove pit viper, mangrove viper, shore pit viper, purple-spotted pit viper, shore pitviper. Found in... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Singapore | 🇸🇬 Singapore |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | San Diego Zoo | 🇺🇸 United States | |
| 2 | Los Angeles Zoo | 🇺🇸 United States | |
| 3 | Toledo Zoo | 🇺🇸 United States | |
| 4 | Audubon Zoo | 🇺🇸 United States | |
| 5 | Cameron Park Zoo | 🇺🇸 United States | |
| 6 | Faunia | 🇪🇸 Spain | |
| 7 | Alligator Adventure | 🇺🇸 United States | |
| 8 | Riverbend Crocodile Farm | 🇿🇦 South Africa | |
| 9 | Siam Serpentarium | 🇹🇭 Thailand | |
| 10 | Snake Farm of Queen Saovabha Memorial Institute | 🇹🇭 Thailand |
With luck
About 10% of wildlife watchers report a Mangrove Viper sighting in Singapore on a given day, based on 346 verified sightings from GBIF citizen-science data. It is the 14th most-seen of the 64 reptiles we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
May, September and November–January
In those months about 20% of wildlife watchers report a Mangrove Viper in Singapore on a given day, against about 10% in February–April, June–August and October, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Mangrove Viper sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Singapore, in our data
Singapore is the only city on Wallace's Line with enough records to rate Mangrove Viper sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Mangrove Viper is recorded against all the reptiles logged in Singapore (346 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.
