What are the chances of seeing an Epistrophe melanostoma in London?
Rare
Under 5% of wildlife watchers report an Epistrophe melanostoma sighting in London on a given day, based on 28 verified sightings from GBIF citizen-science data. It is the 660th 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 30%, if each day is a fresh chance.
When is the best time to see an Epistrophe melanostoma in London?
April and May
In those months about 10% of wildlife watchers report an Epistrophe melanostoma in London on a given day, against under 5% in June to March, the lowest months.
Is London the best place to see an Epistrophe melanostoma?
Yes
Of the 2 cities where we can rate Epistrophe melanostoma sightings, London has the highest daily chance: under 5%. Next come Vienna (Austria, under 5%).
Where does the Epistrophe melanostoma sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Epistrophe melanostoma is recorded against all the insects logged in London (28 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.