Episyrphus trisectus
In 3 days ~30% in a week ~60%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Garden Route National Park | 🇿🇦 South Africa | |
| 2 | Table Mountain National Park | 🇿🇦 South Africa |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Pretoria | 🇿🇦 South Africa | |
| 2 | Johannesburg | 🇿🇦 South Africa | |
| 3 | Cape Town | 🇿🇦 South Africa | |
| 4 | Durban | 🇿🇦 South Africa |
With luck
About 10% of wildlife watchers report an Episyrphus trisectus sighting in Johannesburg on a given day, based on 33 verified sightings from GBIF citizen-science data. It is the 40th most-seen of the 213 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 20% of wildlife watchers report an Episyrphus trisectus in Johannesburg on a given day, against about 10% in July to May, the lowest months. That is one of Johannesburg's driest months, with about 5 mm of rain against 130 mm in December.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Episyrphus trisectus sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 cities where we can rate Episyrphus trisectus sightings, Johannesburg ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Pretoria (South Africa, about 10%).
Same family: Syrphidae
The closest relatives of the Episyrphus trisectus that you can see in Johannesburg (family Syrphidae, Hover Flies) are Stripe-Eyed Lagoon Fly (about 20%), Common Drone Fly (about 10%) and Epauletted Hover Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Episyrphus trisectus is recorded against all the insects logged in Johannesburg (33 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.
