Pontia daplidice
In 3 days ~20% in a week ~30%
Pontia daplidice, the Bath white, is a small butterfly of the family Pieridae, the yellows and whites, which occurs in the Palearctic region. It is common in central and southern Europe, migrating northwards every summer, often reaching southern Scandinavia and sometimes southern England.
The Bath white is a small white butterfly with a wingspan of 45 to 50 mm. The underside of the hindwing has a pattern of greenish blotches, which is characteristic of the Bath whites and easily identifies it from other pierids.
Sexes can be differentiated by markings on the forewing. The male is differentiated from the female by the markings on the upperside of the forewing. The apex of the forewing is black with white spots and lines. There is a black spot at the end of the cell. In the case of the female, there is an additional discal spot in 1b. The female also has an obscure row of terminal and marginal spots on the upper hindwing.
Description from C. T. Bingham in The Fauna of British India, Including Ceylon and Burma, "Butterflies Volume 2" (1907). Male: Upperside: white. Forewing: basal half of costa narrowly irrorated with black scales, a broad irregular quadrate black spot... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 2 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 3 | Monfragüe National Park | 🇪🇸 Spain | |
| 4 | Aigüestortes National Park | 🇪🇸 Spain | |
| 5 | Doñana National Park | 🇪🇸 Spain | |
| 6 | Mercantour National Park | 🇫🇷 France | |
| 7 | Camargue | 🇫🇷 France | |
| 8 | Pyrénées National Park | 🇫🇷 France | |
| 9 | Cévennes National Park | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Bath White sighting in Porto on a given day, based on 20 verified sightings from GBIF citizen-science data. It is the 223rd 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 30%, if each day is a fresh chance.
February and May–August
In those months about 10% of wildlife watchers report a Bath White in Porto on a given day, against under 5% in March–April and September–January, the lowest months. Those are among Porto's driest months, with about 45 mm of rain a month against 140 mm in January.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Bath White sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
7th of 8
Of the 8 cities where we can rate Bath White sightings, Porto ranks 7th at about 10%. The best odds are in Jerusalem (Israel, about 30%), Ramallah (Palestine, about 20%) and Barcelona (Spain, about 10%).
Same family: Pieridae
The closest relatives of the Bath White that you can see in Porto (family Pieridae, Whites, Yellows, and Sulphurs) are Small White (about 20%), Large White (about 10%) and Green-Veined White (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Bath White is recorded against all the insects logged in Porto (20 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.
