Diasemia monostigma
In 3 days ~20% in a week ~40%
Diasemia monostigma, the black wedge pyrale, is a moth of the family Crambidae. It is found in South and East Africa, including islands of the Indian Ocean. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Garden Route National Park | 🇿🇦 South Africa | |
| 2 | Table Mountain National Park | 🇿🇦 South Africa |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Pretoria | 🇿🇦 South Africa | |
| 2 | Harare | 🇿🇼 Zimbabwe | |
| 3 | Johannesburg | 🇿🇦 South Africa | |
| 4 | Durban | 🇿🇦 South Africa | |
| 5 | Cape Town | 🇿🇦 South Africa |
With luck
About 10% of wildlife watchers report a Black Wedge Pyralis sighting in Cape Town on a given day, based on 46 verified sightings from GBIF citizen-science data. It is the 86th most-seen of the 311 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
April–June and August–December
In those months about 10% of wildlife watchers report a Black Wedge Pyralis in Cape Town on a given day, against under 5% in January–March and July, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Black Wedge Pyralis sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Among the best
Of the 5 cities where we can rate Black Wedge Pyralis sightings, Cape Town ranks 5th at about 10%, level with the leaders once rounded. The best odds are in Pretoria (South Africa, about 10%), Harare (Zimbabwe, about 10%) and Johannesburg (South Africa, about 10%).
GBIF citizen-science records
It is estimated from how often the Black Wedge Pyralis is recorded against all the insects logged in Cape Town (46 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.
