Nyctobrya muralis
In 3 days ~20% in a week ~40%
The marbled green (Cryphia muralis) is a moth of the family Noctuidae. The species was first described by Johann Reinhold Forster in 1771. It is found in Europe. Its wings are white with several shades of green. However, the green fades. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 2 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 3 | Cévennes National Park | 🇫🇷 France | |
| 4 | Wadden Sea National Park | 🇩🇪 Germany | |
| 5 | Pyrénées National Park | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Marbled Green sighting in Porto on a given day, based on 32 verified sightings from GBIF citizen-science data. It is the 204th most-seen of the 498 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.
July
In that month about 20% of wildlife watchers report a Marbled Green in Porto on a given day, against under 5% in September to June, the lowest months. That is one of Porto's driest months, with about 15 mm of rain against 140 mm in January.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Marbled Green 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.
Among the best
Of the 9 cities where we can rate Marbled Green sightings, Porto ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Turin (Italy, about 10%) and Valencia (Spain, about 10%).
Same family: Noctuidae
The closest relatives of the Marbled Green that you can see in Porto (family Noctuidae, Cutworm Moths and Allies) are Variegated Cutworm Moth (about 20%), Armyworm Moth (about 20%) and Scarce Merveille Du Jour (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Marbled Green is recorded against all the insects logged in Porto (32 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.
