Aphaenogaster gracillima

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

This species nests in the soil or rotting wood.


Total length of workers around 3.5 - 8 mm. Head and mesosoma reddish brown; mandibles lighter; scapes, legs and gaster dark brown. Scapes, mesosoma and legs distinctly long and slender. Head elongate behind eyes, in full face view strongly but gradually narrowed posteriorly. The funicular segments each elongate; the apical four lighter in color than the others. Mesonotum weakly raised and covered with irregular striation and punctation. Propodeal spines varying in shape from long and slender to short and broad. Similar to Aphaenogaster donann, but distinguished by worker coloration and male morphology. (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=28.



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

  • gracillima. Aphaenogaster gracillima Watanabe & Yamane, 1999: 735, figs. 4, 16 (w.q.m.) JAPAN.



  • Eguchi, K. 2003. A Study on the Male Genitalia of Some Asian Species of Pheidole (Hymenoptera, Formicidae, Myrmicinae). Sociobiology 41(2): 317-355 (page 340, figs. 35A-C male genitalia described)
  • 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 735, worker described)