Pseudonympha magus
In 3 days ~40% in a week ~70%
Pseudonympha magus, the silver-bottom brown, is a butterfly of the family Nymphalidae. It is found in South Africa, from the Western Cape south to Cape Town and along the southern littoral north to the Eastern Cape. The wingspan is 40–44 mm for males and females. Adults are on wing from September to April (with a peak in October and February). There are two overlapping generations per year.
The larvae feed on Poaceae grasses, including Cynodon dactylon. Larvae have also been reared on Ehrharta erecta. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | West Coast National Park | 🇿🇦 South Africa | |
| 2 | Table Mountain National Park | 🇿🇦 South Africa | |
| 3 | Garden Route National Park | 🇿🇦 South Africa |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cape Town | 🇿🇦 South Africa |
Possible
About 20% of wildlife watchers report a Silver-Bottom Brown sighting in West Coast National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 17th most-seen of the 44 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.
March
In that month about 40% of wildlife watchers report a Silver-Bottom Brown in West Coast National Park on a given day, against under 5% in April–August and November–February, the lowest months. That is one of West Coast National Park's driest months, with about 15 mm of rain against 70 mm in June.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Silver-Bottom Brown sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 parks where we can rate Silver-Bottom Brown sightings, West Coast National Park has the highest daily chance: about 20%. Next come Table Mountain National Park (South Africa, about 10%) and Garden Route National Park (South Africa, about 10%).
Same family: Nymphalidae
The closest relatives of the Silver-Bottom Brown that you can see in West Coast National Park (family Nymphalidae, Brush-footed Butterflies) are Sand-Dune Widow (about 10%) and Painted Lady (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Silver-Bottom Brown is recorded against all the insects logged in West Coast National Park (10 verified sightings from 2019 to 2026), 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.
