Harpyia milhauseri
In 3 days ~10% 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 Porto on a given day, based on 17 verified sightings from GBIF citizen-science data. It is the 264th most-seen of the 498 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
May to August
In those months about 10% of wildlife watchers report a Tawny Prominent in Porto on a given day, against under 5% in September to April, the lowest months. Those are among Porto's driest months, with about 30 mm of rain a month against 140 mm in January.
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.
Only Porto, in our data
Porto is the only city on Wallace's Line with enough records to rate Tawny Prominent sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Notodontidae
The closest relatives of the Tawny Prominent that you can see in Porto (family Notodontidae, Prominent Moths) are Buff-Tip (about 10%), Oak Marbled Brown (about 10%) and Swallow Prominent (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 Porto (17 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.
