Myrmelachista arthuri

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Myrmelachista arthuri
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Myrmelachistini
Genus: Myrmelachista
Species: M. arthuri
Binomial name
Myrmelachista arthuri
Forel, 1903

Myrmelachista arthuri casent0173484 profile 1.jpg

Myrmelachista arthuri casent0173484 dorsal 1.jpg

Specimen Label


This species nests in wood or stems of live or dead, standing plants.



Distribution based on Regional Taxon Lists

Neotropical Region: Argentina, Brazil (type locality), Paraguay.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


Castro et al 2017.

Castro et al (2017) studied the nesting and foraging biology of this species in a block of Brazilian Atlantic Forest. They found M. arthuri nests in wood or stems of live or dead, standing plants. It does not create satellite nests in twigs on the ground, as has been observed in some other Myrmelachista species. Workers are visible and active on the stems of plants, using established foraging trails throughout the day. They forage in the leaf litter and arborearly. Activity tended to be more intense during the warmer parts of the day, a pattern that was more pronounced during the cold/dry season. Warm/wet season foraging, less intense despite alate production during that time, likely results in more efficient foraging due to higher food availability. Seasonal shifts in diet, i.e., the quantity and identity of food items, was evident through examining laden foragers. Overall, M. arthuri is a generalist. It collects all kinds of insects and feeds on plant exudates as well. One unexpected finding was the high abundance of springtails collected.



The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • arthuri. Myrmelachista arthuri Forel, 1903c: 263 (diagnosis in key) (w.) BRAZIL. Combination in M. (Decamera): Emery, 1925b: 33; in M. (Hincksidris): Kempf, 1972a: 148. Senior synonym of ute: Kempf, 1978: 36. Current subspecies: nominal plus brunneiceps.
  • ute. Myrmelachista ute Kusnezov, 1969: 34 (w.) ARGENTINA. Junior synonym of arthuri: Kempf, 1978: 36.