Jamides celeno
In 3 days ~40% in a week ~70%
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 |
Possible
About 20% of wildlife watchers report a Common Cerulean sighting in Colombo [Sri Jayawardenepura Kotte] on a given day, based on 28 verified sightings from GBIF citizen-science data. It is the 39th most-seen of the 182 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
July
In that month about 30% of wildlife watchers report a Common Cerulean in Colombo [Sri Jayawardenepura Kotte] on a given day, against under 5% in December, the lowest month. That is one of Colombo [Sri Jayawardenepura Kotte]'s driest months, with about 100 mm of rain against 310 mm in November.
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.
17th of 27
Of the 27 cities where we can rate Common Cerulean sightings, Colombo [Sri Jayawardenepura Kotte] ranks 17th at about 20%. The best odds are in Salem (India, about 40%), Jabalpur (India, about 30%) and Thiruvananthapuram (India, about 30%).
GBIF citizen-science records
It is estimated from how often the Common Cerulean is recorded against all the insects logged in Colombo [Sri Jayawardenepura Kotte] (28 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.
