What are the chances of seeing an Episyrphus trisectus in Pretoria?
With luck
About 10% of wildlife watchers report an Episyrphus trisectus sighting in Pretoria on a given day, based on 26 verified sightings from GBIF citizen-science data. It is the 49th most-seen of the 274 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.
When is the best time to see an Episyrphus trisectus in Pretoria?
February and May
In those months about 20% of wildlife watchers report an Episyrphus trisectus in Pretoria on a given day, against under 5% in June–July, October and December, the lowest months.
What time of day is best to see an Episyrphus trisectus?
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.
Is Pretoria the best place to see an Episyrphus trisectus?
Yes
Of the 4 cities where we can rate Episyrphus trisectus sightings, Pretoria has the highest daily chance: about 10%. Next come Johannesburg (South Africa, about 10%) and Cape Town (South Africa, about 10%).
Which relatives of the Episyrphus trisectus live in Pretoria?
Same family: Syrphidae
The closest relatives of the Episyrphus trisectus that you can see in Pretoria (family Syrphidae, Hover Flies) are Stripe-Eyed Lagoon Fly (about 10%), Epauletted Hover Fly (about 10%) and Orangebum Hover Fly (about 10%), with each one's daily chance of a sighting.
Where does the Episyrphus trisectus sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Episyrphus trisectus is recorded against all the insects logged in Pretoria (26 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.