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Pseudomyrmex gracilis

Graceful Twig Ant


Pseudomyrmex gracilis

Fabricius, 1804

Family: Formicidae
Order: Hymenoptera
Class: Insecta
Phylum / Division: Arthropoda
Kingdom: Animalia

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Records from Argentina


Description


Pseudomyrmex gracilis, also known as the graceful twig ant, Mexican twig ant, slender twig ant, or elongated twig ant, is a large, slender species of ant native to Mexico and arid parts of the US. The workers are about in length and generally wasp-like in appearance and style of movement. Worker ants are bi-colored; the head and gaster are dark, while the antennae, mouthparts, thorax and legs are dull orange with dark shading. They often may be seen on vegetation, foraging for live insects or collecting honeydew from sap-sucking insects.

If the colony ever finds themselves without a queen, the worker ants form dominance hierarchies by boxing with their antennae. This leads to a couple high ranking individuals which can lay eggs until a new queen returns.

Source: Wikipedia, article Pseudomyrmex gracilis. Content adapted from Wikipedia, available under the CC BY-SA 4.0 license. Accessed on 16/07/2026.





Geographic distribution


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Species photographs

Last published photographs

Foto
Photography ID: 622438
  Adult

Cabana, Unquillo
Córdoba
Argentina
02/17/2025
Manuel Eduardo Serra
Foto
Photography ID: 494458
  Adult

Vicente López
Buenos Aires
Argentina
05/08/2022
Eduardo Nadal
Foto
Photography ID: 439701
  Adult

Las Peñas
Córdoba
Argentina
03/14/2021
Carlos Carmona
Foto
Photography ID: 310840
  Adult

Santa Fe
Santa Fe
Argentina
01/07/2019
Gustavo Fernando Durán
Foto
Photography ID: 212931
  Adult

San Jerónimo Norte
Santa Fe
Argentina
07/23/2017
Gustavo Fernando Durán



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Species reports



 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
224736717/02/2025ArgentinaCórdobaReserva Natural Los Quebrachitos, Cabana, UnquilloManuel Eduardo Serra
201383309/03/2024ArgentinaCiudad Autónoma de Buenos AiresJardín Botánico Carlos Thays, PalermoDiego Alfonso Rosa
169472208/05/2022ArgentinaBuenos AiresÁrea Natural Yrigoyen (Yrigoyen y el Río), Vicente LópezEduardo Nadal
139006914/03/2021ArgentinaCórdobaEn casa, Las PeñasCarlos Carmona
110848612/05/2019ArgentinaBuenos AiresParque Natural Municipal Ribera Norte (San Isidro)Ricardo A. Palonsky
86970107/01/2019ArgentinaSanta FeAvenida General López 3681, Santa FeGustavo Fernando Durán
70220218/02/2018ArgentinaSanta FeCamino Rural, San Jerónimo Norte1Gustavo Fernando Durán
68740328/01/2018ArgentinaSanta FeZona Norte, San Jerónimo Norte1Gustavo Fernando Durán
59847823/07/2017ArgentinaSanta FeCamino Rural, San Jerónimo NorteGustavo Fernando Durán
Page 1

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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. Graceful Twig Ant (Pseudomyrmex gracilis) – Species account. Accessed from www.ecoregistros.org on 22/09/2026.