Aenictus eugenii

Santschi (1933) observed these ants tending Pseudococcus lilacinus, one of just a few rare records of an army ant associating with honeydew producing insects.

Distribution based on Regional Taxon Lists
Afrotropical Region: Congo, Democratic Republic of Congo, Eritrea, Kenya, South Africa, Swaziland.

Nomenclature

 * . Aenictus eugenii Emery, 1895h: 17, pl. 2, figs. 1-4 (w.) SOUTH AFRICA.
 * Type-material: holotype worker.
 * Type-locality: South Africa: Makapan, i.-iv.1893 (E. Simon).
 * Type-depository: MSNG.
 * [Misspelled as eugeniae by Arnold, 1915: 139, and others.]
 * Gotwald & Cunningham-Van Someren, 1976: 183 (q.).
 * Status as species: Emery, 1895j: 747; Wasmann, 1904b: 676; Emery, 1910b: 31; Forel, 1911e: 255; Arnold, 1915: 139 (redescription); Wheeler, W.M. 1922a: 752; Prins, 1963: 97; Gotwald & Cunningham-Van Someren, 1976: 183; Bolton, 1995b: 59; Hita Garcia, et al. 2013: 201.
 * Senior synonym of kenyensis: Gotwald & Cunningham-Van Someren, 1976: 183; Bolton, 1995b: 59.
 * Distribution: Democratic Republic of Congo, Kenya, South Africa, Zimbabwe.
 * brazzai. Aenictus eugenii var. brazzai Santschi, 1910c: 355 (w.) CONGO.
 * Type-material: 11 syntype workers.
 * Type-locality: Congo (“Congo français”): Brazzaville, 1.xii.1906 (A. Weiss).
 * Type-depository: NHMB.
 * Subspecies of eugenii: Wheeler, W.M. 1922a: 752.
 * Status as species: Santschi, 1924b: 204; Bolton, 1995b: 59.
 * Junior synonym of eugenii: Gomez, 2022: 26.
 * Distribution: Congo.
 * caroli. Aenictus eugenii subsp. caroli Forel, 1910c: 248 (w.) ERITREA.
 * Type-material: syntype workers (number not stated).
 * Type-locality: Eritrea: Nefassit, 1906 (K. Escherich).
 * Type-depositories: MHNG, NHMB.
 * Subspecies of eugenii: Wheeler, W.M. 1922a: 752; Finzi, 1939a: 162; Bolton, 1995b: 59; Madl, 2019: 13.
 * Junior synonym of eugenii: Gomez, 2022: 26.
 * Distribution: Eritrea.
 * henrii. Aenictus eugenii var. henrii Santschi, 1924b: 204 (w.) DEMOCRATIC REPUBLIC OF CONGO.
 * Type-material: 4 syntype workers.
 * Type-locality: Democratic Republic of Congo (“Congo belge”): Kidada, nr Kitobola (H. Schouteden).
 * Type-depository: NHMB.
 * Subspecies of eugenii: Bolton, 1995b: 59.
 * Junior synonym of eugenii: Gomez, 2022: 26.
 * Distribution: Democratic Republic of Congo.
 * kenyensis. Aenictus eugeniae var. kenyensis Santschi, 1933b: 100 (w.) KENYA.
 * Type-material: 15 syntype workers.
 * Type-locality: Kenya: Kiambou, 27.ii.1929, no. 180, attending Pseudococcus lilacinus (Le Pelley).
 * Type-depositories: BMNH, NHMB.
 * Junior synonym of eugenii: Gotwald & Cunningham-Van Someren, 1976: 183; Bolton, 1995b: 60.

References based on Global Ant Biodiversity Informatics

 * Arnold G. 1915. A monograph of the Formicidae of South Africa. Part I. Ponerinae, Dorylinae. Annals of the South African Museum 14: 1-159.
 * Baroni Urbani C. 1977. Katalog der Typen von Formicidae (Hymenoptera) der Sammlung des Naturhistorischen Museums Basel (2. Teil). Mitt. Entomol. Ges. Basel (n.s.) 27: 61-102.
 * Borowiec M. L. 2016. Generic revision of the ant subfamily Dorylinae (Hymenoptera, Formicidae). ZooKeys 608: 1–280.
 * Forel A. 1911. Die Ameisen des K. Zoologischen Museums in München. Sitzungsber. Math.-Phys. Kl. K. Bayer. Akad. Wiss. Münch. 11: 249-303.
 * Gotwald W. H., Jr.; Cunningham-van Someren, G. R. 1976. Taxonomic and behavioral notes on the African ant, Aenictus eugenii Emery, with a description of the queen (Hymenoptera: Formicidae). Journal of the New York Entomological Society 84:182-188.
 * Gotwald, W. H., Jr.; Cunningham-van Someren, G. R. 1976. Taxonomic and behavioral notes on the African ant, Aenictus eugenii Emery, with a description of the queen (Hymenoptera: Formicidae). Journal of the New York Entomological Society 84:182-188.
 * Hita Garcia F., E. Wiesel, G. Fischer. 2013. The ants of Kenya (Hymenoptera: Formicidae)faunal overview, first species checklist, bibliography, accounts for all genera, and discussion on taxonomy and zoogeography. Journal of East African Natural History 101: 127-222.
 * IZIKO South Africa Museum Collection
 * Prins A. J. 1963. A list of the ants collected in the Kruger National Park with notes on their distribution. Koedoe 6: 91-108.
 * Prins A. J. 1964. Revised list of the ants collected in the Kruger National Park. Koedoe 7: 77-93.
 * Santschi F. 1910. Formicides nouveaux ou peu connus du Congo français. Annales de la Société Entomologique de France 78: 349-400.
 * Santschi F. 1933. Contribution à l'étude des fourmis de l'Afrique tropicale. Bulletin et Annales de la Société Entomologique de Belgique. 73: 95-108.
 * Ward P. S. 2007. The ant genus Leptanilloides: discovery of the male and evaluation of phylogenetic relationships based on DNA sequence data. Memoirs of the American Entomological Institute 80: 637-649.
 * Wheeler W. M. 1922. Ants of the American Museum Congo expedition. A contribution to the myrmecology of Africa. VIII. A synonymic list of the ants of the Ethiopian region. Bulletin of the American Museum of Natural History 45: 711-1004