Hasora vitta
In 3 days ~10% in a week ~20%
Hasora vitta, the plain banded awl, is a butterfly belonging to the family Hesperiidae which is found in India and parts of Southeast Asia. The butterfly, which has a wingspan of 45 to 55 mm, is dark brown above. It resembles the common banded awl (Hasora chromus), except in the case of having a broad white band on the under hindwing which is outwardly diffused; also, its wings are more prominently glossed.
Other differentiating characteristics are: Male: The upper forewing has an apical spot, sometimes with another in 3. The upper forewing has no brand. Female: The apical spot in the case of the female is larger, and there is an additional spot in 2.
The butterfly has two subspecies: Hasora vitta vitta - South Myanmar (Dawnas), Malaya peninsula, Indonesian archipelago and Philippines. Hasora vitta indica - South India, Sikkim, Assam, North Myanmar, Thailand and south western China.
The plain banded awl is found in India in the south (Kanara), Sikkim, Assam and eastwards to Myanmar, Thailand, western China, Malaysia, Indonesia and the Philippines. Not rare as per Evans (1932). Not common as per Wynter-Blyth (1957). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Plain Banded Awl sighting in Hong Kong on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 680th most-seen of the 1125 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.
July
In that month about 10% of wildlife watchers report a Plain Banded Awl in Hong Kong on a given day, against under 5% in August to June, the lowest months. That is one of Hong Kong's wettest months, with about 190 mm of rain against 25 mm in December.
Among the best
Of the 2 cities where we can rate Plain Banded Awl sightings, Hong Kong ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Singapore (Singapore, under 5%).
GBIF citizen-science records
It is estimated from how often the Plain Banded Awl is recorded against all the insects logged in Hong Kong (11 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.
