Charissa obscurata
In 3 days ~10% in a week ~20%
Charissa obscurata, the annulet or Scotch annulet, is a moth of the family Geometridae. The species was first described by Michael Denis and Ignaz Schiffermüller in 1775. It is found in most of Europe including the European part of Russia and in Asia Minor, the Caucasus, Armenia and Azerbaijan. In the mountains it rises up to 1800 meters. The habitat is rocky dry grasslands, boulder corridors, quarries as well as rocky steppe heaths and wine-growing areas.
The wingspan is 27–32 mm. The circular O marks on all four wings are typical but may be vague. The forewings have strongly toothed lines, whose which continue on the hindwings. The margin of the large hindwing is very heavily ruffled and incised, which differ from other species of Charissa moths.
The larva is smooth and grey-brown. Adults are on wing from July to August. The larvae feed on various herbaceous plants, including Calluna species, Viscaria vulgaris, Sedum telephium and Rubus species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Prague | 🇨🇿 Czechia |
Rare
Under 5% of wildlife watchers report an Annulet sighting in Prague on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 470th most-seen of the 724 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.
August and September
In those months about 10% of wildlife watchers report an Annulet in Prague on a given day, against under 5% in October to July, the lowest months.
Only Prague, in our data
Prague is the only city on Wallace's Line with enough records to rate Annulet sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Annulet that you can see in Prague (family Geometridae, Geometer Moths) are Common Heath (about 10%), Yellow Shell Moth (about 10%) and Willow Beauty (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Annulet is recorded against all the insects logged in Prague (9 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.
