Diacamma rugosum
In 3 days ~20% in a week ~40%
Diacamma rugosum, also known as the Bornean queenless ant or Asian bullet ant, is a species of ant of the subfamily Ponerinae. It is found in many countries throughout Southeast Asia. 20 subspecies are recognized. Diacamma rugosum is noted for being one of the only species of ants to completely lack a queen caste. Reproduction is done entirely by workers, with all workers being fertile upon birth. However, reproduction is kept strictly under control in the nest, with only one dominant female, or gamergate, laying all of the eggs. The gamergate will render workers sterile by mutilating their vestigial wing buds as soon as they pupate. These infertile workers, called callows, will remain loyal to the present gamergate and allow her to exercise control over the rest of the workers. This works to reduce colony infighting as it makes usurpation virtually impossible, and the only time the gamergate is replaced is if she dies naturally. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Colombo [Sri Jayawardenepura Kotte] | 🇱🇰 Sri Lanka | |
| 2 | Zhuhai [Macau] | 🇨🇳 China | |
| 3 | Kochi | 🇮🇳 India | |
| 4 | Jakarta | 🇮🇩 Indonesia | |
| 5 | Hong Kong | 🇨🇳 China | |
| 6 | Guangzhou | 🇨🇳 China | |
| 7 | Singapore | 🇸🇬 Singapore |
With luck
About 10% of wildlife watchers report a Bornean Queenless Ant sighting in Jakarta on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 207th most-seen of the 239 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.
January–February, April, June and August
In those months about 10% of wildlife watchers report a Bornean Queenless Ant in Jakarta on a given day, against under 5% in March, May, July and September–December, the lowest months.
Among the best
Of the 7 cities where we can rate Bornean Queenless Ant sightings, Jakarta ranks 4th at about 10%, level with the leaders once rounded. The best odds are in Colombo [Sri Jayawardenepura Kotte] (Sri Lanka, about 10%), Zhuhai [Macau] (China, about 10%) and Kochi (India, about 10%).
Same family: Formicidae
The closest relatives of the Bornean Queenless Ant that you can see in Jakarta (family Formicidae, Ants) are Asian Weaver Ant (about 40%), Yellow Crazy Ant (about 10%) and Odontoponera denticulata (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Bornean Queenless Ant is recorded against all the insects logged in Jakarta (5 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.
