Meligramma triangulifera
In 3 days ~10% in a week ~20%
Meligramma triangulifera is a European species of hoverfly. It was described by Zetterstedt in 1843. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Birmingham | 🇬🇧 United Kingdom | |
| 2 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Variable Roundtail sighting in London on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 1059th most-seen of the 1504 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.
April
In that month about 10% of wildlife watchers report a Variable Roundtail in London on a given day, against under 5% in May to March, the lowest months.
Among the best
Of the 2 cities where we can rate Variable Roundtail sightings, London ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Birmingham (United Kingdom, under 5%).
Same family: Syrphidae
The closest relatives of the Variable Roundtail that you can see in London (family Syrphidae, Hover Flies) are Yellow-Haired Sun Fly (about 40%), Marmalade Hover Fly (about 30%) and Hornet Mimic Hover Fly (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Variable Roundtail is recorded against all the insects logged in London (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.
