Euchrysops cnejus
In 3 days ~10% in a week ~30%
Euchrysops cnejus, the gram blue, is a small butterfly that belongs to the lycaenids or blues family. It is found from India to Australia. The species was first described by Johan Christian Fabricius in 1798. Male upperside: pale purplish suffused with a bluish shade, apparent only in certain lights. Forewing: a slender black anteciliary line edged on the inner side narrowly with fuscous dark brown, broader at apex than at the tornal angle. Hindwing: a subterminal black spot in interspace 1 and another similar spot in interspace 2, the two spots subequal in size, edged on the outer side by a white thread and on the inner side with ochraceous, more prominent in the spot in interspace 2; a slender anteciliary black line with an inner narrow margin of diffuse fuscous brown. Cilia of both forewings and hindwings pale; tail at apex of vein 2 of the hindwing black tipped with white.
Underside: silver grey, in some with a pale yellowish, in others with a faint brown tint. Forewings and hindwings: each with the following brown spots edged slenderly on either side with white: a transverse elongate spot on the discocellulars; a transverse discal series of spots straight on... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kanha National Park | 🇮🇳 India | |
| 2 | Lamington National Park | 🇦🇺 Australia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kota | 🇮🇳 India | |
| 2 | Kolkata | 🇮🇳 India | |
| 3 | Salem | 🇮🇳 India | |
| 4 | Dhaka | 🇧🇩 Bangladesh | |
| 5 | Pune | 🇮🇳 India | |
| 6 | Chennai | 🇮🇳 India | |
| 7 | Jabalpur | 🇮🇳 India | |
| 8 | Chattogram | 🇧🇩 Bangladesh | |
| 9 | Mumbai | 🇮🇳 India | |
| 10 | Davao City | 🇵🇭 Philippines |
With luck
About 10% of wildlife watchers report a Gram Blue sighting in Bangkok on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 99th most-seen of the 245 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
May, August–October and December
In those months about 10% of wildlife watchers report a Gram Blue in Bangkok on a given day, against under 5% in January–April, June–July and November, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Gram Blue sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
21st of 24
Of the 24 cities where we can rate Gram Blue sightings, Bangkok ranks 21st at about 10%. The best odds are in Kota (India, about 30%), Kolkata (India, about 20%) and Salem (India, about 20%).
Same family: Lycaenidae
The closest relatives of the Gram Blue that you can see in Bangkok (family Lycaenidae, Gossamer-winged Butterflies) are Tiny Grass Blue (about 10%), Lesser Grass Blue (about 10%) and Plains Cupid (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Gram Blue is recorded against all the insects logged in Bangkok (18 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.
