Thecla polybe
In 3 days ~20% in a week ~40%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Iguazú National Park | 🇦🇷 Argentina |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Black-Veined Hairstreak sighting in Iguazú National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 269th 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.
April–May, July and December–January
In those months about 10% of wildlife watchers report a Black-Veined Hairstreak in Iguazú National Park on a given day, against under 5% in February–March, June and August–November, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Black-Veined Hairstreak sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Iguazú National Park, in our data
Iguazú National Park is the only park on Wallace's Line with enough records to rate Black-Veined Hairstreak sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Lycaenidae
The closest relatives of the Black-Veined Hairstreak 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 Black-Veined Hairstreak is recorded against all the insects logged in Iguazú National Park (5 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.
