Byblia ilithyia
In 3 days ~20% in a week ~50%
Byblia ilithyia, the spotted joker or joker, is a species of nymphalid butterfly found in parts of Africa and Asia. The male has the upperwings of a deep rich orange. The forewing has the costa broadly black until nearly the apex. The cell has three narrow short black bands, the inner and outer not reaching the median vein. An irregular black spot from dorsum to vein 4, continues very narrowly along that vein to meet an oblique irregular band from just beyond the middle of the costa. A postdiscal broad transverse black band from dorsum to vein 4, with the portions of the veins beyond it defined in black. The apex of the wing beyond the broad black edging to the costal border has its upper margin and the terminal portions of the veins defined in black; finally a narrow terminal band. The hindwing has an elongate black sub-costal patch near base, continued posteriorly across the cell by an inner and an outer series of small transverse spots; a complete broad black postdiscal band with the portions of the veins beyond it lined with black, and a narrow black terminal band as on the forewing. Cilia of forewings and hindwings white, alternated... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Meru National Park | 🇰🇪 Kenya | |
| 2 | Waterberg Plateau Park | 🇳🇦 Namibia | |
| 3 | Tsavo East National Park | 🇰🇪 Kenya | |
| 4 | Kruger National Park | 🇿🇦 South Africa | |
| 5 | Pilanesberg National Park | 🇿🇦 South Africa | |
| 6 | Etosha National Park | 🇳🇦 Namibia | |
| 7 | Hluhluwe-Imfolozi Park | 🇿🇦 South Africa |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Coimbatore | 🇮🇳 India | |
| 2 | Salem | 🇮🇳 India | |
| 3 | Pretoria | 🇿🇦 South Africa | |
| 4 | Johannesburg | 🇿🇦 South Africa | |
| 5 | Chennai | 🇮🇳 India | |
| 6 | Durban | 🇿🇦 South Africa |
With luck
About 10% of wildlife watchers report a Spotted Joker sighting in Johannesburg on a given day, based on 24 verified sightings from GBIF citizen-science data. It is the 64th most-seen of the 213 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
February and March
In those months about 20% of wildlife watchers report a Spotted Joker in Johannesburg on a given day, against under 5% in July–September and November–December, the lowest months. Those are among Johannesburg's wettest months, with about 80 mm of rain a month against almost none in July.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Spotted Joker sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 6
Of the 6 cities where we can rate Spotted Joker sightings, Johannesburg ranks 4th at about 10%. The best odds are in Coimbatore (India, about 20%), Salem (India, about 20%) and Pretoria (South Africa, about 10%).
Same family: Nymphalidae
The closest relatives of the Spotted Joker that you can see in Johannesburg (family Nymphalidae, Brush-footed Butterflies) are Garden Acraea (about 30%), Junonia archesia (about 30%) and Painted Lady (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Spotted Joker is recorded against all the insects logged in Johannesburg (24 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.
