Milionia basalis
In 3 days ~40% in a week ~70%
Milionia basalis is a moth of the family Geometridae first described by Francis Walker in 1854. It is found in Japan, the north-eastern parts of the Himalayas, Myanmar and Sundaland. The wingspan is 50–56 mm. The larvae feed on Dacrydium and Podocarpus species. The adult is day flying. It feed on the nectar flowers of Leptospermum flavescens in the mountains of Peninsular Malaysia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Yai National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Milionia basalis sighting in Hong Kong on a given day, based on 199 verified sightings from GBIF citizen-science data. It is the 52nd most-seen of the 1125 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.
June
In that month about 40% of wildlife watchers report a Milionia basalis in Hong Kong on a given day, against under 5% in February, September and November, the lowest months. That is one of Hong Kong's wettest months, with about 280 mm of rain against 25 mm in December.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Milionia basalis sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 6
Of the 6 cities where we can rate Milionia basalis sightings, Hong Kong ranks 3rd at about 10%. The best odds are in Taipei (Taiwan, about 20%) and Zhuhai [Macau] (China, about 20%).
Same family: Geometridae
The closest relatives of the Milionia basalis that you can see in Hong Kong (family Geometridae, Geometer Moths) are False Tiger Moth (about 30%), Orange Magpie Moth (about 10%) and Asian Cross-Lined Wave Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Milionia basalis is recorded against all the insects logged in Hong Kong (199 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.
