Udea ferrugalis
In 3 days ~10% in a week ~20%
Udea ferrugalis, the rusty dot pearl, is a moth of the family Crambidae. The species was first described by Jacob Hübner in 1796. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Addo Elephant National Park | 🇿🇦 South Africa | |
| 2 | Pyrénées National Park | 🇫🇷 France | |
| 3 | Cévennes National Park | 🇫🇷 France | |
| 4 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 5 | Wadden Sea National Park | 🇩🇪 Germany | |
| 6 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 7 | Garden Route National Park | 🇿🇦 South Africa | |
| 8 | Kruger National Park | 🇿🇦 South Africa | |
| 9 | Table Mountain National Park | 🇿🇦 South Africa |
Rare
Under 5% of wildlife watchers report a Rusty Dot Pearl sighting in Tokyo on a given day, based on 20 verified sightings from GBIF citizen-science data. It is the 443rd most-seen of the 1013 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
November
In that month about 10% of wildlife watchers report a Rusty Dot Pearl in Tokyo on a given day, against under 5% in December to October, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Rusty Dot Pearl sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
30th of 30
Of the 30 cities where we can rate Rusty Dot Pearl sightings, Tokyo ranks 30th at under 5%. The best odds are in Valencia (Spain, about 20%), Antananarivo (Madagascar, about 20%) and Turin (Italy, about 20%).
Same family: Crambidae
The closest relatives of the Rusty Dot Pearl that you can see in Tokyo (family Crambidae, Crambid Snout Moths) are Hawaiian Beet Webworm Moth (about 10%) and Lilac Pyralid (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Rusty Dot Pearl is recorded against all the insects logged in Tokyo (20 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.
