Harpyia milhauseri
In 3 days ~20% in a week ~30%
Harpyia milhauseri, the tawny prominent, is a moth of the family Notodontidae. The species was first described by Johan Christian Fabricius in 1775. It is mainly found in central Europe. The wingspan is 50–60 mm. The moth flies from May to June depending on the location.
The larvae feed on Quercus, Fagus and occasionally Betula. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 2 | Cévennes National Park | 🇫🇷 France | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 4 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 5 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Porto | 🇵🇹 Portugal |
With luck
About 10% of wildlife watchers report a Tawny Prominent sighting in Sierra de Guadarrama National Park on a given day, based on 16 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 207th most-seen of the 597 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
April to June
In those months about 10% of wildlife watchers report a Tawny Prominent in Sierra de Guadarrama National Park on a given day, against under 5% in July to March, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Tawny Prominent 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.
Among the best
Of the 5 parks where we can rate Tawny Prominent sightings, Sierra de Guadarrama National Park ranks 4th at about 10%, level with the leaders once rounded. The best odds are in Sierra Nevada National Park (Spain, about 10%), Cévennes National Park (France, about 10%) and Bavarian Forest National Park (Germany, about 10%).
Same family: Notodontidae
The closest relatives of the Tawny Prominent that you can see in Sierra de Guadarrama National Park (family Notodontidae, Prominent Moths) are Pine Processionary-Moth (about 20%), Pale Prominent (about 10%) and Lunar Marbled Brown (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Tawny Prominent is recorded against all the insects logged in Sierra de Guadarrama National Park (16 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.
