Pterostoma palpina
In 3 days ~20% in a week ~40%
Pterostoma palpina, the pale prominent, is a moth from the family Notodontidae. The species was first described by Carl Alexander Clerck in 1759. The moth can be found in Europe and Central Asia (Palearctic realm). Pterostoma palpina has a wingspan of 35 to 52 mm. Beyond the black scaled tooth-like forewing projection the inner margin is notched. Long labial palps and tufts on the tail segment, give an elongated appearance. The antennae of the female are pectinated, but the teeth are shorter than those of the male; and the blackish streak on the wings are usually less defined. Except that some specimens are more strongly marked than others there is little variation. The larva is bluish green, with white dorsal and lateral lines, and a black edged yellow stripe along the spiracles; this stripe is marked with reddish on the three anterior segments.
Seitz- The specimens of the first brood larger, predominantly grey-brown, those of the second brood smaller, light straw-colour. The transverse bands of the forewing only indicated by black vein-dots, the postdiscal band more complete than the other, being marked by double dots separated by white and placed... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Biebrza National Park | 🇵🇱 Poland | |
| 2 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 4 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 5 | Wadden Sea National Park | 🇩🇪 Germany | |
| 6 | Pyrénées National Park | 🇫🇷 France | |
| 7 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Porto | 🇵🇹 Portugal | |
| 3 | Manchester | 🇬🇧 United Kingdom | |
| 4 | London | 🇬🇧 United Kingdom | |
| 5 | Birmingham | 🇬🇧 United Kingdom | |
| 6 | Kyiv | 🇺🇦 Ukraine | |
| 7 | Berlin | 🇩🇪 Germany | |
| 8 | Warsaw | 🇵🇱 Poland | |
| 9 | Prague | 🇨🇿 Czechia | |
| 10 | Copenhagen | 🇩🇰 Denmark |
With luck
About 10% of wildlife watchers report a Pale Prominent sighting in Snowdonia National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 294th most-seen of the 387 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
April–June and August
In those months about 10% of wildlife watchers report a Pale Prominent in Snowdonia National Park on a given day, against under 5% in July and September–March, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Pale Prominent sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
4th of 7
Of the 7 parks where we can rate Pale Prominent sightings, Snowdonia National Park ranks 4th at about 10%. The best odds are in Biebrza National Park (Poland, about 20%), Sierra Nevada National Park (Spain, about 10%) and Bavarian Forest National Park (Germany, about 10%).
Same family: Notodontidae
The closest relatives of the Pale Prominent that you can see in Snowdonia National Park (family Notodontidae, Prominent Moths) are Buff-Tip (about 30%), Lesser Swallow Prominent (about 20%) and Great Prominent (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Pale Prominent is recorded against all the insects logged in Snowdonia National Park (6 verified sightings from 2019 to 2026), 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.
