Cigaritis vulcanus
In 3 days ~50% in a week ~80%
Cigaritis vulcanus, the common silverline, is a species of lycaenid or blue butterfly found in Asia. It was first described by Johan Christian Fabricius in 1775. Male. Upperside dark brown, with a more or less violet tinge. Forewing usually with three short orange-red transverse bands in the upper part of the wing, these bands are of various lengths in different specimens, and all descend from near the costa downwards, the sub-apical band the shortest, the discal band the longest, in some examples there is an orange- red sub-basal mark, and another on the costa at its middle, and there is also an indication of a sub-marginal band. Hindwing with an anal orange-red patch, which in most examples narrows upwards for a short distance sub-marginally, a small black spot in the anal lobe, another on the margin between the two tails, both with some silvery-blue scales attached to them; tails black, with minute white tips, the orange-red colour of the anal patch running half way up both of them; both wings with black outer marginal line and whitish cilia with a black base. Underside pale whitish-sulphury-yellow, bands red-brown edged with dark In-own, with inner silvery macular... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Salem | 🇮🇳 India | |
| 2 | Prayagraj | 🇮🇳 India | |
| 3 | Bhubaneshwar | 🇮🇳 India | |
| 4 | Kolkata | 🇮🇳 India | |
| 5 | New Delhi | 🇮🇳 India | |
| 6 | Coimbatore | 🇮🇳 India | |
| 7 | Pune | 🇮🇳 India | |
| 8 | Mumbai | 🇮🇳 India | |
| 9 | Bengaluru | 🇮🇳 India |
Possible
About 20% of wildlife watchers report a Common Silverline sighting in Prayagraj on a given day, based on 20 verified sightings from GBIF citizen-science data. It is the 40th most-seen of the 117 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
September
In that month about 40% of wildlife watchers report a Common Silverline in Prayagraj on a given day, against under 5% in May–June and October–March, the lowest months. That is one of Prayagraj's wettest months, with about 160 mm of rain against almost none in November.
2nd of 9
Of the 9 cities where we can rate Common Silverline sightings, Prayagraj ranks 2nd at about 20%. The best odds are in Salem (India, about 40%).
Same family: Lycaenidae
The closest relatives of the Common Silverline that you can see in Prayagraj (family Lycaenidae, Gossamer-winged Butterflies) are Plains Cupid (about 30%), Dark Grass Blue (about 30%) and Lime Blue (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Silverline is recorded against all the insects logged in Prayagraj (20 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.
