Chrysotoxum verralli
In 3 days ~10% in a week ~30%
Chrysotoxum verralli is a species of hoverfly belonging to the subfamily Syrphinae. 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 | |
| 3 | Moscow | 🇷🇺 Russia |
Rare
Under 5% of wildlife watchers report a Verrall's Spearhorn sighting in Birmingham on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 470th most-seen of the 811 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
June and July
In those months about 10% of wildlife watchers report a Verrall's Spearhorn in Birmingham on a given day, against under 5% in August to May, the lowest months.
Yes
Of the 3 cities where we can rate Verrall's Spearhorn sightings, Birmingham has the highest daily chance: under 5%. Next come London (United Kingdom, under 5%) and Moscow (Russia, under 5%).
Same genus: Chrysotoxum
The closest relatives of the Verrall's Spearhorn that you can see in Birmingham (genus Chrysotoxum, Meadow Flies) are Chrysotoxum bicincta (about 10%) and Hook-Barred Spearhorn (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Verrall's Spearhorn is recorded against all the insects logged in Birmingham (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.
