Delta esuriens
In 3 days ~20% in a week ~40%
Delta esuriens is a species of potter wasp found in tropical Asia, belonging to the Vespidae family. They can be separated from the similar looking Delta pyriforme by the presence of a yellow band on the metasomal petiole segment.
Female Delta esuriens build a nest of mud with 1-8 cells adjacent to each other in 1 or 2 rows with their entrance holes pot-like which are provisioned with lepidopteran caterpillars before an egg is laid and the entrance hole sealed. The egg hangs from the cell wall, suspended by a bit of silk. About 3 to 10 caterpillars may be placed in a single cell. The eggs hatch in a couple of days and feed for a week. Pupation takes about two weeks. Male offspring have a slightly shorter development time and emerge earlier. The adults emerge from the cells in about a month. The larvae are parasitized by Chrysididae and Bombyliidae and preyed on by Sarcophagidae and ants. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Phnom Penh | 🇰🇭 Cambodia | |
| 2 | Naha | 🇯🇵 Japan | |
| 3 | Ho Chi Minh City | 🇻🇳 Vietnam | |
| 4 | Bangkok | 🇹🇭 Thailand | |
| 5 | Dubai | 🇦🇪 United Arab Emirates | |
| 6 | Colombo [Sri Jayawardenepura Kotte] | 🇱🇰 Sri Lanka | |
| 7 | Hyderabad | 🇮🇳 India | |
| 8 | Mumbai | 🇮🇳 India | |
| 9 | Tuen Mun | 🇨🇳 China | |
| 10 | Kochi | 🇮🇳 India |
With luck
About 10% of wildlife watchers report an Okinawa Mud Wasp sighting in Colombo [Sri Jayawardenepura Kotte] on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 149th most-seen of the 182 insects 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.
July
In that month about 20% of wildlife watchers report an Okinawa Mud Wasp in Colombo [Sri Jayawardenepura Kotte] on a given day, against under 5% in June and October–April, the lowest months. That is one of Colombo [Sri Jayawardenepura Kotte]'s driest months, with about 100 mm of rain against 310 mm in November.
6th of 17
Of the 17 cities where we can rate Okinawa Mud Wasp sightings, Colombo [Sri Jayawardenepura Kotte] ranks 6th at about 10%. The best odds are in Phnom Penh (Cambodia, about 20%), Naha (Japan, about 20%) and Ho Chi Minh City (Vietnam, about 10%).
GBIF citizen-science records
It is estimated from how often the Okinawa Mud Wasp is recorded against all the insects logged in Colombo [Sri Jayawardenepura Kotte] (6 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.
