Hemiargus hanno
In 3 days ~20% in a week ~40%
Hemiargus hanno, the hanno blue is a species of butterfly in the family Lycaenidae. It is found in Suriname, Brazil, Colombia, Cuba, the Netherlands Antilles, Puerto Rico and Hispaniola. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Iberá National Park | 🇦🇷 Argentina | |
| 2 | Iguazú National Park | 🇦🇷 Argentina |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Salvador | 🇧🇷 Brazil | |
| 2 | São Luís | 🇧🇷 Brazil | |
| 3 | Caracas | 🇻🇪 Venezuela | |
| 4 | Santa Cruz de la Sierra | 🇧🇴 Bolivia | |
| 5 | Fortaleza | 🇧🇷 Brazil | |
| 6 | Porto Alegre | 🇧🇷 Brazil | |
| 7 | São Paulo | 🇧🇷 Brazil | |
| 8 | Vitória | 🇧🇷 Brazil | |
| 9 | Niterói | 🇧🇷 Brazil | |
| 10 | Maceió | 🇧🇷 Brazil |
With luck
About 10% of wildlife watchers report a Hanno Blue sighting in Iguazú National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 226th most-seen of the 306 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.
June
In that month about 20% of wildlife watchers report a Hanno Blue in Iguazú National Park on a given day, against under 5% in May, July–September and November–February, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Hanno 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.
Among the best
Of the 2 parks where we can rate Hanno Blue sightings, Iguazú National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Iberá National Park (Argentina, about 10%).
Same family: Lycaenidae
The closest relatives of the Hanno Blue that you can see in Iguazú National Park (family Lycaenidae, Gossamer-winged Butterflies) are Separated Stripestreak (about 20%), Great Emesis (about 20%) and Cassius Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Hanno Blue is recorded against all the insects logged in Iguazú National Park (8 verified sightings from 2019 to 2026), 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.
