Chicatana Leafcutter Ant

Chicatana Leafcutter Ant

Atta mexicana

Daily sighting probability ~30% · Possible
at León

In 3 days ~70% in a week ~90%

32 Verified sightings at León
73 In all 2 parks From 2019 to 2026
January Best month
☀️ Diurnal When it's spotted

About the Chicatana Leafcutter Ant

Atta mexicana is a species of leaf-cutter ant, a New World ant of the subfamily Myrmicinae of the genus Atta. This species is from one of the two genera of advanced attines (fungus-growing ants) within the tribe Attini.

The queen is approximately 30 mm long, and dark brown. Workers are dark brown, with short spines. The much larger soldiers grow up to 18 mm, and are even more armored with short spines. The ants cut leaves and grow a basidiomycete fungus called Leucoagaricus gongylophorus (Agaricaceae) with them. Oleic acid is one of their undertaking triggers.

A. mexicana is found in Mexico (where it is commonly called hormiga chicatana, hormiga podadora de hoja/desert ant and mochomo), and crosses into Arizona, United States. This species is highly adaptive, and thrives in such urban areas as Puerto Vallarta. Densities of A. mexicana nests are very high in numerous areas, including the resort community of Nuevo Vallarta.

The species is found in various locations of central and southern Mexico during the start of the rainy season, when the soil becomes wet and the ants leave for their nuptial flight. That time of the year is... Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Cumbres de Monterrey National Park 🇲🇽 Mexico
~10%
2 Cañón del Sumidero National Park 🇲🇽 Mexico
~10%

Cities Where Found

# City Country Daily sighting probability
1 León 🇲🇽 México
~30%
2 Guatemala City 🇬🇹 Guatemala
~30%
3 Tegucigalpa 🇭🇳 Honduras
~20%
4 Guadalajara 🇲🇽 México
~20%
5 Puebla 🇲🇽 México
~20%
6 Monterrey 🇲🇽 México
~20%
7 San Luis Potosí 🇲🇽 México
~10%
8 San Salvador 🇸🇻 El Salvador
~10%

Before you go

What are the chances of seeing a Chicatana Leafcutter Ant in León?

Possible

About 30% of wildlife watchers report a Chicatana Leafcutter Ant sighting in León on a given day, based on 32 verified sightings from GBIF citizen-science data. It is the 2nd most-seen of the 30 insects we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.

When is the best time to see a Chicatana Leafcutter Ant in León?

January, May–July and September

In those months about 40% of wildlife watchers report a Chicatana Leafcutter Ant in León on a given day, against under 5% in March–April, August and December, the lowest months. Those are among León's wettest months, with about 90 mm of rain a month against 5 mm in April.

What time of day is best to see a Chicatana Leafcutter Ant?

Between 3 and 6 pm

Across all the parks we cover, that three-hour window holds the most Chicatana Leafcutter Ant sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.

Is León the best place to see a Chicatana Leafcutter Ant?

Yes

Of the 8 cities where we can rate Chicatana Leafcutter Ant sightings, León has the highest daily chance: about 30%. Next come Guatemala City (Guatemala, about 30%) and Tegucigalpa (Honduras, about 20%).

Where does the Chicatana Leafcutter Ant sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Chicatana Leafcutter Ant is recorded against all the insects logged in León (32 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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