Delta esuriens
In 3 days ~40% in a week ~70%
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 Ho Chi Minh City on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 48th most-seen of the 121 insects 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.
August and September
In those months about 30% of wildlife watchers report an Okinawa Mud Wasp in Ho Chi Minh City on a given day, against under 5% in February–May, October and December, the lowest months. Those are among Ho Chi Minh City's wettest months, with about 190 mm of rain a month against 5 mm in February.
3rd of 17
Of the 17 cities where we can rate Okinawa Mud Wasp sightings, Ho Chi Minh City ranks 3rd at about 10%. The best odds are in Phnom Penh (Cambodia, about 20%) and Naha (Japan, about 20%).
GBIF citizen-science records
It is estimated from how often the Okinawa Mud Wasp is recorded against all the insects logged in Ho Chi Minh City (14 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.
