Bastilla joviana
In 3 days ~20% in a week ~30%
Bastilla joviana is a moth of the family Noctuidae first described by Caspar Stoll in 1782. It is found from the Oriental region to the Moluccas and in New Guinea and Australia. It is also present in South Africa. The larvae feed on Acalypha, Breynia and Phyllanthus species. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Bastilla joviana sighting in Hong Kong on a given day, based on 30 verified sightings from GBIF citizen-science data. It is the 319th most-seen of the 1125 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
March–May, July, October and December
In those months about 10% of wildlife watchers report a Bastilla joviana in Hong Kong on a given day, against under 5% in January–February, June, August–September and November, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Bastilla joviana sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 4 cities where we can rate Bastilla joviana sightings, Hong Kong has the highest daily chance: about 10%. Next come Tuen Mun (China, about 10%) and Kochi (India, under 5%).
GBIF citizen-science records
It is estimated from how often the Bastilla joviana is recorded against all the insects logged in Hong Kong (30 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.
