Chilades laius
In 3 days ~20% in a week ~40%
Chilades lajus, the lime blue, is a small butterfly found in India, Sri Lanka, Myanmar, Taiwan, Hong Kong, Hainan, Mangulam Island, Sulawesi and the Philippines that belongs to the lycaenids or blues family. Wet-season form: Male has a bluish-purple upperside. Forewing has base and basal half of costa flushed with pale blue; costa and termen edged by a slender dark brownish-block even line, beyond which along the termen the cilia are brown, at base, white outwardly. Hindwing: costa somewhat broadly dusky black; a slender black conspicuous anteciliary line, beyond which the cilia are white traversed medially by a brown line; dorsum broadly pale brown, two subterminal pale-bordered black spots in interspace 1, and one similar spot in interspace 2, often obsolescent and barely indicated.
Underside: grey. Forewing: a transverse broad lunule on the discocellulars and a transverse discal series of six spots dark brown, the lunule and each of the discal spots edged with white; the posterior four spots of the discal series elongate and each obliquely placed, the anterior two round and curved inwards; a subterminal series of transverse elongate spots with an inner series of... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Jamshedpur | 🇮🇳 India | |
| 2 | Berhampore | 🇮🇳 India | |
| 3 | Chennai | 🇮🇳 India | |
| 4 | Jabalpur | 🇮🇳 India | |
| 5 | Prayagraj | 🇮🇳 India | |
| 6 | Kanpur | 🇮🇳 India | |
| 7 | Mumbai | 🇮🇳 India | |
| 8 | Chattogram | 🇧🇩 Bangladesh | |
| 9 | Kolkata | 🇮🇳 India | |
| 10 | Vadodara | 🇮🇳 India |
With luck
About 10% of wildlife watchers report a Lime Blue sighting in Hong Kong on a given day, based on 55 verified sightings from GBIF citizen-science data. It is the 211th 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 40%, if each day is a fresh chance.
May to November
In those months about 10% of wildlife watchers report a Lime Blue in Hong Kong on a given day, against under 5% in December to April, the lowest months.
26th of 27
Of the 27 cities where we can rate Lime Blue sightings, Hong Kong ranks 26th at about 10%. The best odds are in Jamshedpur (India, about 40%), Berhampore (India, about 30%) and Chennai (India, about 30%).
Same family: Lycaenidae
The closest relatives of the Lime Blue that you can see in Hong Kong (family Lycaenidae, Gossamer-winged Butterflies) are Pale Grass Blue (about 20%), Plains Cupid (about 20%) and Abisara echeria (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Lime Blue is recorded against all the insects logged in Hong Kong (55 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.
