Dysgonia algira
In 3 days ~40% in a week ~60%
Dysgonia algira, the passenger, is a moth of the family Noctuidae. The species was first described by Carl Linnaeus in 1767 and is found in the Palearctic - from the southern half of Europe and parts of North Africa through West, Central and South Asia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 3 | Pyrénées National Park | 🇫🇷 France | |
| 4 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
With luck
About 10% of wildlife watchers report a The Passenger sighting in Porto on a given day, based on 139 verified sightings from GBIF citizen-science data. It is the 36th most-seen of the 498 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.
August
In that month about 30% of wildlife watchers report a The Passenger in Porto on a given day, against under 5% in October to April, the lowest months. That is one of Porto's driest months, with about 20 mm of rain against 140 mm in January.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most The Passenger sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 11 cities where we can rate The Passenger sightings, Porto has the highest daily chance: about 10%. Next come Turin (Italy, about 10%) and Budapest (Hungary, about 10%).
Same family: Erebidae
The closest relatives of the The Passenger that you can see in Porto (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Swan Moth (about 20%), Buff Footman (about 20%) and Ruby Tiger Moth (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the The Passenger is recorded against all the insects logged in Porto (139 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.
