Ampulex compressa
In 3 days ~30% in a week ~60%
The emerald cockroach wasp or jewel wasp (Ampulex compressa) is a solitary wasp of the family Ampulicidae. It is known for its unusual reproductive behavior, which involves leading a cockroach into a dug burrow and using it as a host for its larvae. It thus belongs to the entomophagous parasites.
The wasp is mostly found in the tropical regions of Africa, South Asia, Southeast Asia, and the Pacific islands. The flying wasps are more abundant in the warm seasons of the year. A. compressa was introduced to Hawaii by F.X. Williams in 1941 as a method of biocontrol. This has been unsuccessful because of the territorial tendencies of the wasp and the small scale on which they hunt.
The species is also found in the Brazilian states of São Paulo and Rio de Janeiro. A. compressa likely arrived in the country through the ports of Santos and Rio de Janeiro. The wasp has a metallic blue-green body, with the thighs of the second and third pair of legs red. The female is about 22 mm long; the male is smaller and lacks a stinger. Males can be less than half of a female in size if emerging from a smaller or a superparasitized host. The species undergoes four larval... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Ho Chi Minh City | 🇻🇳 Vietnam | |
| 2 | Colombo [Sri Jayawardenepura Kotte] | 🇱🇰 Sri Lanka | |
| 3 | Dhaka | 🇧🇩 Bangladesh | |
| 4 | Jakarta | 🇮🇩 Indonesia | |
| 5 | Kozhikode | 🇮🇳 India | |
| 6 | Tuen Mun | 🇨🇳 China | |
| 7 | São Paulo | 🇧🇷 Brazil | |
| 8 | Bengaluru | 🇮🇳 India | |
| 9 | Bandung | 🇮🇩 Indonesia | |
| 10 | Guadalajara | 🇲🇽 México |
With luck
About 10% of wildlife watchers report an Emerald Cockroach Wasp sighting in Dhaka on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 68th most-seen of the 92 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
June
In that month about 30% of wildlife watchers report an Emerald Cockroach Wasp in Dhaka on a given day, against under 5% in May and September–February, the lowest months. That is one of Dhaka's wettest months, with about 380 mm of rain against 10 mm in January.
3rd of 17
Of the 17 cities where we can rate Emerald Cockroach Wasp sightings, Dhaka ranks 3rd at about 10%. The best odds are in Ho Chi Minh City (Vietnam, about 20%) and Colombo [Sri Jayawardenepura Kotte] (Sri Lanka, about 10%).
Same order: Hymenoptera
The closest relatives of the Emerald Cockroach Wasp that you can see in Dhaka (order Hymenoptera, Ants, Bees, Wasps, and Sawflies) are Giant Honey Bee (about 30%), Yellow Oriental Paper Wasp (about 30%) and Asian Honey Bee (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Emerald Cockroach Wasp is recorded against all the insects logged in Dhaka (7 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.
