Charaxes jasius
In 3 days ~20% in a week ~30%
Charaxes jasius, the two-tailed pasha, is a butterfly in the family Nymphalidae. It is the only European species of the genus Charaxes. Divergence of the Mediterranean species C. jasius from the last common ancestor with its closest related species still flying in the Afrotropical realm most probably occurred around 2 mya, i.e. during the Pliocene.
Charaxes jasius is a medium to large butterfly with a wingspan reaching 76–83 mm in males, the female being larger. Males up to 80–100 mm wingspan, with females even larger, may be found in Morocco. Each hindwing bears two tails, characteristic of most species of the genus. The spring seasonal brood is smaller in size compared with the second and sometimes third broods, and the two tails on each hindwing tend to curve somewhat towards each other resembling a pincer, less so in the later broods with slightly longer straighter tails. The upperside ground colour of the wings is dark brownish-black, with some changeable purplish sheen viewed at varying angles; forewing with suggestion of darker discal bars, postdiscal spots orange; hindwing with whitish patch near costal border, dusted with brownish scales; outer border of... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Waterberg Plateau Park | 🇳🇦 Namibia | |
| 2 | Gonarezhou National Park | 🇿🇼 Zimbabwe | |
| 3 | Monfragüe National Park | 🇪🇸 Spain | |
| 4 | Hwange National Park | 🇿🇼 Zimbabwe | |
| 5 | Etosha National Park | 🇳🇦 Namibia | |
| 6 | Cévennes National Park | 🇫🇷 France | |
| 7 | Chobe National Park | 🇧🇼 Botswana | |
| 8 | Kruger National Park | 🇿🇦 South Africa | |
| 9 | Pyrénées National Park | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Two-Tailed Pasha sighting in Porto on a given day, based on 23 verified sightings from GBIF citizen-science data. It is the 214th 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, May and August–November
In those months about 10% of wildlife watchers report a Two-Tailed Pasha in Porto on a given day, against under 5% in March–April, June–July and December–January, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Two-Tailed Pasha sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 cities where we can rate Two-Tailed Pasha sightings, Porto ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Barcelona (Spain, about 10%) and Lisbon (Portugal, about 10%).
Same family: Nymphalidae
The closest relatives of the Two-Tailed Pasha that you can see in Porto (family Nymphalidae, Brush-footed Butterflies) are Speckled Wood (about 30%), Red Admiral (about 20%) and European Comma (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Two-Tailed Pasha is recorded against all the insects logged in Porto (23 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.
