Rhodometra sacraria
In 3 days ~30% in a week ~60%
Rhodometra sacraria, the vestal, is a moth of the family Geometridae. The species was first described by Carl Linnaeus in his 1767 12th edition of Systema Naturae. It can be found throughout Europe, in the Near East, in North Africa, in the Afrotropical realm and in large parts of Asia. It is also found in South America (Chile and Argentina).
Rhodometra sacraria inhabits meadows, forest clearing, paths, gardens and urban environments. Rhodometra sacraria has a wingspan reaching 22–28 mm, while the length of the forewings is 12–14 mm. The late generations are smaller and the wingspan has an average of 16–26 mm. These moths are easily distinguishable from the mahogany or pink stripe, located on yellowish or cream background, crossing diagonally the dorsal sides of the upperwings from the posterior margin up to the apex. Discal spots are usually present and have the same colour as the postmedial line.
The dorsal sides of the hindwings are whitish and unmarked. The fringes on the wings are mostly in the basic colour. The abdomen is pure white. Head and thorax are straw yellow. In males the antennae are bipectinated to three-fourths length... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 2 | Monfragüe National Park | 🇪🇸 Spain | |
| 3 | Picos de Europa National Park | 🇪🇸 Spain | |
| 4 | Kgalagadi Transfrontier Park | 🇿🇦 South Africa | |
| 5 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 6 | Doñana National Park | 🇪🇸 Spain | |
| 7 | Pyrénées National Park | 🇫🇷 France | |
| 8 | Kruger National Park | 🇿🇦 South Africa | |
| 9 | Cévennes National Park | 🇫🇷 France | |
| 10 | Addo Elephant National Park | 🇿🇦 South Africa | |
| 11 | iSimangaliso Wetland Park | 🇿🇦 South Africa | |
| 12 | Garden Route National Park | 🇿🇦 South Africa | |
| 13 | Table Mountain National Park | 🇿🇦 South Africa |
With luck
About 10% of wildlife watchers report a Vestal sighting in Milan on a given day, based on 62 verified sightings from GBIF citizen-science data. It is the 49th most-seen of the 351 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
September and October
In those months about 30% of wildlife watchers report a Vestal in Milan on a given day, against under 5% in November to July, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Vestal sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is seen both by day and at night.
12th of 25
Of the 25 cities where we can rate Vestal sightings, Milan ranks 12th at about 10%. The best odds are in Valencia (Spain, about 50%), Kuwait City (Kuwait, about 20%) and Algiers (Algeria, about 20%).
Same family: Geometridae
The closest relatives of the Vestal that you can see in Milan (family Geometridae, Geometer Moths) are Willow Beauty (about 10%), Common Heath (about 10%) and Yellow Shell Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Vestal is recorded against all the insects logged in Milan (62 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.
