Cidaria fulvata
In 3 days ~10% in a week ~20%
Cidaria fulvata, the barred yellow, is a moth of the family Geometridae. The species is widespread in the Palearctic, in the west from Spain and France to the British Isles, in the east to the Central Asian mountains, to the Amur and to Kamchatka, in the south of Italy via the Balkan countries, Asia Minor, the Caucasus, the Caspian region as far as the Pamir Mountains and northern India as well as in the north as far as Fennoscandia. The habitats include rocky slopes, heaths and wasteland as well as gardens and parks.
The wingspan is 20–25 mm. The forewing have yellow or ochre ground colour. There is a wide rust cross band which is traversed by violet-gray. This is jagged towards the margin and has thin cream line edges, connected along the costa to a triangular cream stain at the apex. The hindwings are plain whitish yellow. The larva is rather long and slender with 2 well developed anal points, bluer green dorsally, yellower green ventrally, with yellow lateral line. The head is rather small and the prothorax slightly swollen. The pupa spun by a few threads among leaves is bright yellow green, wings more grass-green. The dorsal line is scarcely darkened and there is a whitish subdorsal. The cremaster is reddish.
The moths fly from June to July.[1] The species prefers woodland, chalk downland and scrubland. The larvae feed on dog rose. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mercantour National Park | 🇫🇷 France | |
| 2 | Vanoise National Park | 🇫🇷 France | |
| 3 | Ecrins National Park | 🇫🇷 France | |
| 4 | Cévennes National Park | 🇫🇷 France | |
| 5 | Pyrénées National Park | 🇫🇷 France | |
| 6 | Wadden Sea National Park | 🇩🇪 Germany |
Rare
Under 5% of wildlife watchers report a Barred Yellow sighting in London on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 971st 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.
June
In that month about 10% of wildlife watchers report a Barred Yellow in London on a given day, against under 5% in July to May, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Barred Yellow sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
5th of 5
Of the 5 cities where we can rate Barred Yellow sightings, London ranks 5th at under 5%. The best odds are in Liverpool (United Kingdom, about 10%), Prague (Czechia, under 5%) and Berlin (Germany, under 5%).
Same family: Geometridae
The closest relatives of the Barred Yellow that you can see in London (family Geometridae, Geometer Moths) are Riband Wave (about 20%), Least Carpet (about 20%) and Double-Striped Pug (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Barred Yellow is recorded against all the insects logged in London (15 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.
