Halpe porus
In 3 days ~20% in a week ~40%
Halpe porus, commonly known as Moore's ace, is a species of butterfly in the family Hesperiidae, found in India. Male. Upperside blackish-brown. Forewing with seven semi-hyaline spots; two within the cell towards its end, one above the other, one a little larger close to the base of the first median interspace, and a similar spot obliquely above it, near the base of the second median interspace, three small sub-apical spots in an outwardly oblique curve. Hindwing with a small, slightly suffused space, slightly yellow-tinted in the upper middle of the wing, otherwise without markings. Cilia of forewing chequered brown and greyish-white, of hindwing greyish-white, with a few brown marks on it. Underside with the ground colour slightly paler, the spots as on the upperside and a series of small white sub-marginal spots in the interspaces, the series generally complete, but in some examples one or two of them are obsolescent. Hindwing with a conspicuous discal white outwardly curved band, divided by the veins into six elongated spots, commencing from near the costa before the apex, increasing in size hindwards, largest in the middle, and extending to near the submedian... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 2 | Kaeng Krachan National Park | 🇹🇭 Thailand |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tuen Mun | 🇨🇳 China |
With luck
About 10% of wildlife watchers report a Moore's Ace sighting in Tuen Mun on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 260th most-seen of the 557 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
September
In that month about 20% of wildlife watchers report a Moore's Ace in Tuen Mun on a given day, against under 5% in October to April, the lowest months. That is one of Tuen Mun's wettest months, with about 170 mm of rain against 20 mm in December.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Moore's Ace 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 Tuen Mun, in our data
Tuen Mun is the only city on Wallace's Line with enough records to rate Moore's Ace sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Hesperiidae
The closest relatives of the Moore's Ace that you can see in Tuen Mun (family Hesperiidae, Skippers) are Indian Palm Bob (about 20%), Formosan Swift (about 20%) and Grass Demon (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Moore's Ace is recorded against all the insects logged in Tuen Mun (14 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.
