Thiodia citrana
In 3 days ~10% in a week ~20%
Thiodia citrana, the lemon bell, is a species of moth of the family Tortricidae. It is found in China (Hebei, Xinjiang), Japan, Iran, Asia Minor, Turkmenistan, Russia, Kazakhstan, North Africa and Europe. The habitat consists of rough grasslands and dry pastures.
The wingspan is 16–21 mm. It can be reminiscent of some species in the group Cochylini, but it is not related to these. The palpi are relatively large and protrude in front of the head like a short beak. The forewings are slightly pointed, pale yellow on colour, with small black cross spots along the costal edge. This wing has brownish marks consisting of two bevels and a wide line against the wing tip. The hindwings are light brown, pale at the base.
Adults are on wing from June to September in western Europe. The larvae feed on Achillea millefolium, Artemisia campestris, Artemisia vulgaris, Tanacetum vulgare and Anthemis cotula. They feed on the flowerheads of their host plant from within a spinning (a shelter like the web of a spider). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland |
Rare
Under 5% of wildlife watchers report a Lemon Bell sighting in Helsinki on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 553rd most-seen of the 838 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.
July
In that month about 10% of wildlife watchers report a Lemon Bell in Helsinki on a given day, against under 5% in August to June, the lowest months.
Only Helsinki, in our data
Helsinki is the only city on Wallace's Line with enough records to rate Lemon Bell sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Tortricidae
The closest relatives of the Lemon Bell that you can see in Helsinki (family Tortricidae, Tortricid Leafroller Moths) are Barred Marble (about 10%), Common Marble (about 10%) and White-Foot Bell (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Lemon Bell is recorded against all the insects logged in Helsinki (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.
