Pempelia palumbella
In 3 days ~20% in a week ~40%
Pempelia palumbella is a moth of the family Pyralidae. It is found in Europe. The wingspan is 25–27 millimetres (0.98–1.06 in). The forewings are violet-brown, more or less sprinkled with whitish and dark fuscous, suffused with whitish towards costa between lines and on apex; first and second lines pale red-brownish, internally black-edged, first angulated, preceded by a small spot of blackish raised scales on fold, second twice indented; a rather oblique black discal mark. The hindwings are light fuscous, darker terminally. The larva is dark greenish-grey, reddish-tinged; dorsal line brownish, pale-edged; subdorsal double, lighter brownish; head reddish brown: in tubular webs on Erica and Polygala
The moth flies in one generation from May to September.[1] The caterpillars feed on calluna, ericaceae species, thyme and polygalaceae species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Cévennes National Park | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Heather Knot-Horn sighting in Snowdonia National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 336th 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.
June
In that month about 20% of wildlife watchers report a Heather Knot-Horn in Snowdonia National Park on a given day, against under 5% in August to May, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Heather Knot-Horn sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Yes
Of the 2 parks where we can rate Heather Knot-Horn sightings, Snowdonia National Park has the highest daily chance: about 10%. Next come Cévennes National Park (France, under 5%).
GBIF citizen-science records
It is estimated from how often the Heather Knot-Horn is recorded against all the insects logged in Snowdonia National Park (9 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.
