Acrobasis tumidana
In 3 days ~10% in a week ~20%
Acrobasis tumidana is a moth of the family Pyralidae. It was described in 1775 by Michael Denis and Ignaz Schiffermüller and is found in Europe. The wingspan is 19–24 mm. The moth flies in one generation from July to August.[1].
The larvae feed on oak. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Scarce Oak Knot-Horn sighting in London on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 1109th 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Scarce Oak Knot-Horn in London on a given day, so our monthly data shows no clear season.
4th of 4
Of the 4 cities where we can rate Scarce Oak Knot-Horn sightings, London ranks 4th at under 5%. The best odds are in Sofia (Bulgaria, about 10%), Essen (Germany, under 5%) and Berlin (Germany, under 5%).
Same genus: Acrobasis
The closest relatives of the Scarce Oak Knot-Horn that you can see in London (genus Acrobasis) are Grey Knot-Horn (about 10%) and Thicket Knot-Horn (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Scarce Oak Knot-Horn is recorded against all the insects logged in London (10 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.
