Silhouette: Mattia Menchetti · PhyloPic
Castalius margaritaceus
In 3 days ~50% in a week ~80%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bwindi Impenetrable National Park | 🇺🇬 Uganda |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Castalius margaritaceus sighting in Bwindi Impenetrable National Park on a given day, based on 17 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 8th most-seen of the 38 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
March and September
In those months about 40% of wildlife watchers report a Castalius margaritaceus in Bwindi Impenetrable National Park on a given day, against under 5% in February, August and November–December, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Castalius margaritaceus sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Bwindi Impenetrable National Park, in our data
Bwindi Impenetrable National Park is the only park on Wallace's Line with enough records to rate Castalius margaritaceus sightings: about 20% of wildlife watchers there report one on a given day.
Same family: Lycaenidae
The closest relatives of the Castalius margaritaceus that you can see in Bwindi Impenetrable National Park (family Lycaenidae, Gossamer-winged Butterflies) are Forest Hairtail (about 20%), Uranothauma falkensteini (about 20%) and Pale Babul Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Castalius margaritaceus is recorded against all the insects logged in Bwindi Impenetrable National Park (17 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.
