Chrysomya megacephala
In 3 days ~40% in a week ~70%
Chrysomya megacephala, more commonly known as the oriental latrine fly or oriental blue fly, is a member of the family Calliphoridae (blowflies). It is a warm-weather fly with a greenish-blue metallic box-like body. The fly infests corpses soon after death, making it important to forensic science. This fly is implicated in some public health issues; it can be the cause of myiasis, and also infects fish and livestock.
Chrysomya megacephala's eggs are "oval with one flat face and another convex". Adult flies reflect a metallic blue-green color on their thorax and abdomen and have yellow gena, or cheeks. Larvae vary in size according to instar and are shaped more thickly towards the rear. C. megacephala have large red eyes, those of males being close together, and those of females farther apart. The cercus of the male is longer than that of the female.
Chrysomya megacephala has a wide geographical distribution. It is most common in the Oriental and Australasian realms. It is also found in Japan and the Palearctic realm. The range of C. megacephala has grown since the 1970s, with the species expanding into New Zealand and Africa, along with... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Everglades National Park | 🇺🇸 United States | |
| 2 | Galápagos Islands | 🇪🇨 Ecuador |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Guiyang | 🇨🇳 China | |
| 2 | Tel Aviv | 🇮🇱 Israel | |
| 3 | Prayagraj | 🇮🇳 India | |
| 4 | Zhuhai [Macau] | 🇨🇳 China | |
| 5 | Montevideo | 🇺🇾 Uruguay | |
| 6 | Pune | 🇮🇳 India | |
| 7 | Manila | 🇵🇭 Philippines | |
| 8 | Buenos Aires | 🇦🇷 Argentina | |
| 9 | Chennai | 🇮🇳 India | |
| 10 | Mumbai | 🇮🇳 India |
Possible
About 20% of wildlife watchers report an Oriental Latrine Fly sighting in Tel Aviv on a given day, based on 50 verified sightings from GBIF citizen-science data. It is the 29th most-seen of the 264 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.
January and June–November
In those months about 20% of wildlife watchers report an Oriental Latrine Fly in Tel Aviv on a given day, against about 10% in February–May and December, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Oriental Latrine Fly sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 31
Of the 31 cities where we can rate Oriental Latrine Fly sightings, Tel Aviv ranks 2nd at about 20%. The best odds are in Guiyang (China, about 30%).
Same family: Calliphoridae
The closest relatives of the Oriental Latrine Fly that you can see in Tel Aviv (family Calliphoridae, Blow Flies) are Blue Blowfly (about 10%), Common European Greenbottle Fly (about 10%) and Australian Sheep Blow Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Oriental Latrine Fly is recorded against all the insects logged in Tel Aviv (50 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.
