Hecatera bicolorata
In 3 days ~10% in a week ~20%
The broad-barred white (Hecatera bicolorata) is a moth of the family Noctuidae. The species was first described by Johann Siegfried Hufnagel in 1766. It is distributed throughout Europe and is also found in Turkey, Iran, Israel, Lebanon, Syria, Kirghizia, Tajikistan, western Siberia and China.
This is a fairly small (wingspan 28–35 mm) distinctive species. The white or sometimes bluish-grey forewings are marked with a broad dark olive-fuscous median band. The claviform stigma is black edged; upper stigmata are pale grey with dark centres. The base and outer area of forewing and the head and thorax are pure white. The hindwings are whitish grey with veins and marginal border fuscous. The hindwings are darker in the female.
P. serena Schiff. (= placida Esp., hieracii Scriba, bicolorata Led., intermedia Walk. (17 f)). Forewing bluish grey, the median area dark olive fuscous; claviform stigma black-edged; upper stigmata pale grey with dark centres; hindwing whitish grey, — in female darker, — with veins and marginal border fuscous; — in leuconota Ev. (? = monticola Dup.) (17f) the base and outer area of forewing and the head and thorax are... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | Berlin | 🇩🇪 Germany | |
| 4 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Broad-Barred White sighting in London on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 1109th 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 Broad-Barred White in London on a given day, against under 5% in July to May, the lowest months.
Among the best
Of the 4 cities where we can rate Broad-Barred White sightings, London ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Rotterdam [The Hague] (Netherlands, under 5%), Birmingham (United Kingdom, under 5%) and Berlin (Germany, under 5%).
GBIF citizen-science records
It is estimated from how often the Broad-Barred White is recorded against all the insects logged in London (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.
