Hyarotis adrastus
In 3 days ~30% in a week ~50%
Hyarotis adrastus, the tree flitter, is a butterfly belonging to the family Hesperiidae found in South Asia and Southeast Asia. Male and female, dark chocolate-brown. Upperside, forewing with three small conjugated subapical semi-transparent white spots, three similar and larger discal spots, and a fourth above them within the cell. Underside darker brown basally, paler exteriorly; forewing with spots as above, bordered externally by a suffused dark brown streak; hindwing with a double series of white dark brown-outer-bordered lunules crossing the middle of the wing, beyond which is a submarginal series of suffused dark brown spots. Palpi, thorax, and abdomen beneath pale greyishbrown. Legs brown. Cilia yellowish- white, spotted with pale brown.
Bengal. (Moore in P. Z. S.) Recorded from Ceylon (Hutchison, Wade, Mackwood); Andamans, Cachar (Wood-Mason and de Nicéville); Sikkim (de Nicéville; Elwes); Calcutta (de Nicéville); Kumaon (Doherty); Kangra, N.-W. Himalayas (Moore) Orissa (Taylor); Nilgiris (Hampson).Burma, Andamans, Thailand, Laos, Vietnam, Hainan, Hong Kong, Malaysia, Tioman, Singapore, Borneo, Sumatra, Java, Palawan, Philippines.
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| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Taman Negara National Park | 🇲🇾 Malaysia |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Tree Flitter sighting in Hong Kong on a given day, based on 102 verified sightings from GBIF citizen-science data. It is the 113th most-seen of the 1125 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Tree Flitter in Hong Kong on a given day, against under 5% in February, the lowest month. That is one of Hong Kong's wettest months, with about 190 mm of rain against 25 mm in December.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Tree Flitter sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 cities where we can rate Tree Flitter sightings, Hong Kong has the highest daily chance: about 10%. Next come Kochi (India, under 5%).
Same family: Hesperiidae
The closest relatives of the Tree Flitter that you can see in Hong Kong (family Hesperiidae, Skippers) are Indian Palm Bob (about 10%), Formosan Swift (about 10%) and Pale Awlet (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Tree Flitter is recorded against all the insects logged in Hong Kong (102 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.
