Rondaniola bursaria
In 3 days ~10% in a week ~20%
Rondaniola bursaria is a species of fly in the family Cecidomyiidae, found in the Palearctic The larvae gall ground ivy (Glechoma hederacea). 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 Lighthouse Gall sighting in London on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 1219th 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 Lighthouse Gall in London on a given day, so our monthly data shows no clear season.
3rd of 3
Of the 3 cities where we can rate Lighthouse Gall sightings, London ranks 3rd at under 5%. The best odds are in Minsk (Belarus, about 10%) and Vienna (Austria, under 5%).
Same family: Cecidomyiidae
The closest relatives of the Lighthouse Gall that you can see in London (family Cecidomyiidae, Gall and Forest Midges) are Artichoke Gall-Midge (about 10%), Hairy Beech Gall (about 10%) and Locust Gall Midge (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Lighthouse Gall is recorded against all the insects logged in London (7 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.
