Cymatophorina diluta
In 3 days ~10% in a week ~20%
Cymatophorina is a monotypic moth genus of the family Drepanidae first described by Arnold Spuler in 1908. Its only species, Cymatophorina diluta, the oak lutestring or lesser lutestring, was described by Michael Denis and Ignaz Schiffermüller in 1775. It is found in much of Europe, with subspecies Cymatophorina diluta hartwiegi occurring in Britain.
The wingspan is 33–36 mm. The species is univoltine. Adults are on wing between late July and early October, depending on location. Subspecies Cymatophorina diluta hartwiegi flies in August and September. The larvae feed on the leaves of oak trees. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report an Oak Lutestring sighting in London on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 1394th 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.
September
In that month about 10% of wildlife watchers report an Oak Lutestring in London on a given day, against under 5% in October to August, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Oak Lutestring sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
Only London, in our data
London is the only city on Wallace's Line with enough records to rate Oak Lutestring sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Oak Lutestring is recorded against all the insects logged in London (5 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.
