Eurema brigitta
In 3 days ~40% in a week ~70%
Eurema brigitta, the small grass yellow or broad-bordered grass yellow, is a small butterfly of the family Pieridae, that is, the yellows and whites. It is found in India, other parts of Asia, Australia and Africa. Wet-season form: Male. Upper-side somewhat paler yellow. Fore-wing with the outer marginal black band; the apical edge of costa and the cilia rosy-red. Hind-wing with the black outer band somewhat narrower, macular, the decreasing portions each with a more prolonged inner-tooth, and the yellow ground-colour between each extending to the outer edge. Underside pale yellow, the fore-wing also having a very slightly defined sub-apical inwardly-oblique squamous streak. Fore-wing with the entire costal edge and outer marginal cilia, and also the outer marginal cilia of the hind-wing, rosy-red. Female. Upper-side. Apical edge between the subcostals of fore-wing, and cilia of both wings paler rosy-red. Underside with the markings on hind-wing slightly visible. Fore-wing above with the black outer band broken beneath the lower median veinlet. Hind-wing with the outer band similar to male, its portions slightly broader. Underside similar to male, the markings being... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kafue National Park | 🇿🇲 Zambia | |
| 2 | iSimangaliso Wetland Park | 🇿🇦 South Africa | |
| 3 | uMkhuze Game Reserve | 🇿🇦 South Africa | |
| 4 | Moremi Game Reserve | 🇧🇼 Botswana | |
| 5 | Pilanesberg National Park | 🇿🇦 South Africa | |
| 6 | Kruger National Park | 🇿🇦 South Africa | |
| 7 | Chobe National Park | 🇧🇼 Botswana | |
| 8 | Kgalagadi Transfrontier Park | 🇿🇦 South Africa | |
| 9 | Etosha National Park | 🇳🇦 Namibia | |
| 10 | Namib-Naukluft National Park | 🇳🇦 Namibia | |
| 11 | Addo Elephant National Park | 🇿🇦 South Africa | |
| 12 | Garden Route National Park | 🇿🇦 South Africa |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Ouagadougou | 🇧🇫 Burkina Faso | |
| 2 | Pretoria | 🇿🇦 South Africa | |
| 3 | Johannesburg | 🇿🇦 South Africa | |
| 4 | Harare | 🇿🇼 Zimbabwe | |
| 5 | Durban | 🇿🇦 South Africa |
With luck
About 10% of wildlife watchers report a Broad-Bordered Grass Yellow sighting in Johannesburg on a given day, based on 52 verified sightings from GBIF citizen-science data. It is the 20th most-seen of the 213 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
May
In that month about 30% of wildlife watchers report a Broad-Bordered Grass Yellow in Johannesburg on a given day, against under 5% in January, September and November, the lowest months. That is one of Johannesburg's driest months, with about 15 mm of rain against 130 mm in December.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Broad-Bordered Grass Yellow sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 5
Of the 5 cities where we can rate Broad-Bordered Grass Yellow sightings, Johannesburg ranks 3rd at about 10%. The best odds are in Ouagadougou (Burkina Faso, about 20%) and Pretoria (South Africa, about 20%).
Same family: Pieridae
The closest relatives of the Broad-Bordered Grass Yellow that you can see in Johannesburg (family Pieridae, Whites, Yellows, and Sulphurs) are Pioneer White (about 20%), Rüppell's Dotted Border (about 10%) and African Migrant (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Broad-Bordered Grass Yellow is recorded against all the insects logged in Johannesburg (52 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.
