Aphaenogaster irrigua

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Aphaenogaster irrigua
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Aphaenogaster
Species: A. irrigua
Binomial name
Aphaenogaster irrigua
Watanabe & Yamane, 1999

This species prefers moist situations; it nests in the soil in woodlands, near banks of streams and dry river beds. Foraging workers do not turn their gasters downwards.


Total length of workers around 4 - 6 mm. Head brown to light brown, mesosoma light brown, gaster dark brown to brown, legs light brown. Scapes, mesosoma and legs relatively rather long compared to other Japanese Aphaenogaster species. Anterior portion of clypeus with transverse striae. Basal margin of mandibles often weakly serrate. Mesonotum only weakly raised, predominantly covered with punctures. Similar to Aphaenogaster osimensis, but separable by the presence of shallow, small punctures on the occiput and pronotal dorsum, and the dull surfaces of the propodeum and lateral parts of mesopleura, which are covered with striae and punctures. (Japanese Ant Image Database)


Distribution based on Regional Taxon Lists

Palaearctic Region: Japan (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


Chromosome number 2n=32.



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

  • irrigua. Aphaenogaster irrigua Watanabe & Yamane, 1999: 734, fig. 18 (w.) JAPAN.



  • Watanabe, H.; Yamane, S. 1999. New species and new status in the genus Aphaenogaster (Formicidae) in the Oriental and Australian regions. In: Identification Guide to the Aculeata of the Nansei Islands. Pp. 728-736 in: Yamane, S.; Ikudome, S.; Terayama, M (page 734, described)