Tailed Sulphur

Tailed Sulphur

Phoebis neocypris

Daily sighting probability <5% · Rare
at Buenos Aires

In 3 days ~10% in a week ~30%

30 Verified sightings at Buenos Aires
133 In all 2 parks From 2019 to 2026
November Best month
☀️ Diurnal When it's spotted

About the Tailed Sulphur

Phoebis neocypris, the tailed sulphur, is a butterfly in the family Pieridae. It is native to Mexico, Central America, and South America. There is a record for one stray in southern Texas. The larvae feed on fresh leaves of Cassia species. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Iguazú National Park 🇦🇷 Argentina
~20%
2 Iguaçu National Park 🇧🇷 Brazil
~20%

Cities Where Found

# City Country Daily sighting probability
1 Porto Alegre 🇧🇷 Brazil
~20%
2 Montevideo 🇺🇾 Uruguay
~10%
3 São Paulo 🇧🇷 Brazil
~10%
4 Curitiba 🇧🇷 Brazil
~10%
5 Buenos Aires 🇦🇷 Argentina
<5%

Before you go

What are the chances of seeing a Tailed Sulphur in Buenos Aires?

Rare

Under 5% of wildlife watchers report a Tailed Sulphur sighting in Buenos Aires on a given day, based on 30 verified sightings from GBIF citizen-science data. It is the 241st most-seen of the 558 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.

When is the best time to see a Tailed Sulphur in Buenos Aires?

November

In that month about 10% of wildlife watchers report a Tailed Sulphur in Buenos Aires on a given day, against under 5% in December to October, the lowest months.

What time of day is best to see a Tailed Sulphur?

Between 11 am and 2 pm

Across all the parks we cover, that three-hour window holds the most Tailed Sulphur sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.

Is Buenos Aires the best place to see a Tailed Sulphur?

5th of 5

Of the 5 cities where we can rate Tailed Sulphur sightings, Buenos Aires ranks 5th at under 5%. The best odds are in Porto Alegre (Brazil, about 20%), Montevideo (Uruguay, about 10%) and São Paulo (Brazil, about 10%).

Where does the Tailed Sulphur sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Tailed Sulphur is recorded against all the insects logged in Buenos Aires (30 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.

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