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Species: Acromyrmex echinatior   (Forel, 1899) 

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Current Valid Name:

Taxonomic History (provided by Barry Bolton, 2023)

Atta (Acromyrmex) octospinosa var. echinatior Forel, 1899d PDF: 34 (w.q.) PANAMA. Neotropic. Primary type information: Primary type material: lectotype worker (by designation of Schultz et al., 1998 PDF: 461). Primary type locality: Panama: Volcán de Chiriqui, Bugaba (Champion) (by restriction of Wheeler, 1937c PDF: 72 (in text)). Lectotype: Guatemala: Vera Paz, Senahu, El Reposo, Zapota, 800 ft (Champion). Primary type depository: MHNG. Type notes: The designated lectotype is not from the nominated type-locality. All original syntype localities: Mexico: Chihuahua, Montezuma (Cockerell), Guatemala: Vera Paz, Senahu, El Reposo, Zapota, 800 ft (Champion), Costa Rica: Volcán de Irazu (Rogers), Panama: Volcán de Chiriqui, Bugaba (Champion). AntCat AntWiki HOL

Taxonomic history

Lectotype designation: Schultz et al., 1998 PDF: 461.
Combination in Acromyrmex: Emery, 1924f PDF: 350
Junior synonym of Acromyrmex octospinosus: Emery, 1905f: 44.
// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Distribution Notes:

Mexico to Panama.


Natural History:

In Costa Rica this species prefers open dry habitats such as urban areas around San Jose and seasonally dry habitats of Guanacaste Province. I have records of the species from Santa Rosa National Park, Palo Verde, San Jose, and as far south as Quepos, but I never collected any Acromyrmex in the wet forest of the Osa Peninsula during extensive collecting there in the 1980's.

On the nature trail near the headquarters of Santa Rosa National Park I once observed workers carrying cut flower parts up a tree, suggesting that nests may occasionally be arboreal.

Queens multiply mate, and colonies are facultatively polygynous (Bekkevold et al. 1999).


Bekkevold, D., J. Frydenberg, and J. J. Boomsma. 1999. Multiple mating and facultative polygyny in the Panamanian leafcutter ant Acromyrmex echinatior. Behavioral Ecology and Sociobiology 46:103-109.

Schultz, T. R., D. Bekkevold, and J. J. Boomsma. 1998. Acromyrmex insinuator new species: an incipient social parasite of fungus-growing ants. Insectes Sociaux 45:457-471.

Specimen Habitat Summary

Found most commonly in these habitats: 10 times found in lowland wet forest, 7 times found in tropical rainforest, 1 times found in oak cloud forest, 4 times found in 2º lowland rainforest, 3 times found in 2º wet forest, 3 times found in dry forest, 1 times found in pasture at forest edge, 1 times found in coffee finca, 2 times found in ridgetop cloud forest, 2 times found in 2nd growth rainforest, ...

Found most commonly in these microhabitats: 22 times at bait, 2 times column on ground, 6 times beating vegetation, 5 times Malaise trap, 2 times nocturnal foragers, 3 times ex sifted leaf litter, 2 times foraging column, 1 times foragers, 2 times white pan trap, 1 times under stone, 2 times on ground, ...

Collected most commonly using these methods: 22 times Baiting, 12 times search, 2 times hand collecting, 6 times Beating, 3 times Malaise, 2 times white pan trap, 2 times Malaise trap, 1 times pit fall, 1 times Winkler, 1 times light, 1 times MaxiWinkler, ...

Elevations: collected from 5 - 1700 meters, 500 meters average

Collect Date Range: collected between 1985-07-11 00:00:00.0 and 2021-05-05 00:00:00.0

Type specimens: Lectotype of Acromyrmex echinatior: casent0909421; paralectotype of Acromyrmex echinatior: casent0909422

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