Jamides celeno
In 3 days ~20% in a week ~40%
Jamides celeno, the common cerulean, is a small butterfly found in Indomalayan realm belonging to the lycaenids or blues family. The species was first described by Pieter Cramer in 1775. Like many tropical butterflies, this species shows seasonal polyphenism, with the appearance differing between adults according to the season.
Male upperside has the ground colour pale bluish white. The forewing has the terminal margin narrowly edged with black that broadens very slightly towards the apex of the wing; the cilia are brownish black. The hindwing is uniformly coloured, except for an anteciliary black line faintly edged on the inner side by a white line within which and touching it is a row of black spots, the anterior spots very faint, the spot in interspace 2 large and well-defined, two geminate (paired) spots in interspace 1 and a very small black lunular dot in interspace 1a; cilia brown, white at the base in the interspaces. In specimens obtained in the height of the dry season the black edging to the termen of the forewing is much reduced and the subterminal series of black spots in the hindwing is altogether missing.
The underside is greyish... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Periyar National Park | 🇮🇳 India | |
| 2 | Sinharaja Forest Reserve | 🇱🇰 Sri Lanka | |
| 3 | Tangkoko Nature Reserve | 🇮🇩 Indonesia | |
| 4 | Kanha National Park | 🇮🇳 India | |
| 5 | Minneriya National Park | 🇱🇰 Sri Lanka |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Salem | 🇮🇳 India | |
| 2 | Jabalpur | 🇮🇳 India | |
| 3 | Thiruvananthapuram | 🇮🇳 India | |
| 4 | Bengaluru | 🇮🇳 India | |
| 5 | Kozhikode | 🇮🇳 India | |
| 6 | Coimbatore | 🇮🇳 India | |
| 7 | Raipur | 🇮🇳 India | |
| 8 | Guwahati | 🇮🇳 India | |
| 9 | Chattogram | 🇧🇩 Bangladesh | |
| 10 | Chennai | 🇮🇳 India |
With luck
About 10% of wildlife watchers report a Common Cerulean sighting in Tuen Mun on a given day, based on 19 verified sightings from GBIF citizen-science data. It is the 242nd 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.
November and December
In those months about 20% of wildlife watchers report a Common Cerulean in Tuen Mun on a given day, against under 5% in February to September, the lowest months. Those are among Tuen Mun's driest months, with about 25 mm of rain a month against 290 mm in June.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Common Cerulean sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
24th of 27
Of the 27 cities where we can rate Common Cerulean sightings, Tuen Mun ranks 24th at about 10%. The best odds are in Salem (India, about 40%), Jabalpur (India, about 30%) and Thiruvananthapuram (India, about 30%).
Same genus: Jamides
The closest relatives of the Common Cerulean that you can see in Tuen Mun (genus Jamides, Ceruleans) are Metallic Cerulean (about 20%) and Dark Cerulean (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Cerulean is recorded against all the insects logged in Tuen Mun (19 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.
