Diacamma rugosum
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Bornean Queenless Ant sighting in Guangzhou on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 294th most-seen of the 482 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
August and September
In those months about 10% of wildlife watchers report a Bornean Queenless Ant in Guangzhou on a given day, against under 5% in October to July, the lowest months. Those are among Guangzhou's wettest months, with about 200 mm of rain a month against 30 mm in December.
6th of 7
Of the 7 cities where we can rate Bornean Queenless Ant sightings, Guangzhou ranks 6th at under 5%. 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 Guangzhou (family Formicidae, Ants) are Nicobar Carpenter Ant (about 10%), Rich Spiny Sugar Ant (about 10%) and Asian Weaver Ant (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 Guangzhou (11 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.
