Crematogaster acaciae

Distribution
Sharaf et al. (2019): Crematogaster acaciae was originally described from Ethiopia but is also known from Democratic Republic of Congo, Somalia, South Africa, and Zambia (Guénard et al. 2017; Janicki et al. 2017). For the Arabian Peninsula, it was previously only known from Oman (Collingwood 1985; Collingwood and Agosti 1996; Borowiec 2014; Sharaf et al. 2018; Monks et al. 2019) (Fig. 6). In this study, we provide the first records for the KSA and Yemen.

Distribution based on Regional Taxon Lists
Afrotropical Region: Ethiopia, Namibia, Saudi Arabia, Sudan, United Republic of Tanzania, Yemen, Zimbabwe. Palaearctic Region: Oman.

Nomenclature

 * . Crematogaster acaciae Forel, 1892b: 141 (w.) SOMALIA.
 * Type-material: syntype workers (number not stated).
 * Type-locality: Somalia: Faf, in acacia galls (C. Keller).
 * Type-depository: MHNG.
 * Combination in C. (Acrocoelia): Emery, 1922e: 144;
 * combination in C. (Crematogaster): Bolton, 1995b: 166.
 * Subspecies of brunneipennis: Wheeler, W.M. 1922a: 152, 829.
 * Status as species: Forel, 1892e: 353; Dalla Torre, 1893: 79; Arnold, 1920a: 500; Emery, 1922e: 144; Arnold, 1926: 288; Collingwood, 1985: 260; Bolton, 1995b: 146; Collingwood & Agosti, 1996: 329; Borowiec, L. 2014: 63 (see note in bibliography); Sharaf, Aldawood & Hita Garcia, 2019: 39.
 * Distribution: Namibia, Oman, Saudi Arabia, Somalia, Sudan, Tanzania, Yemen, Zambia.
 * Current subspecies: nominal plus generosa, gloriosa, victoriosa.

Taxonomic Notes
Sharaf et al. (2019): This species represents a typical problematic taxon within the genus. The known distribution of C. acaciae and its three subspecies in the Afrotropics is patchy and there are some notable morphological differences between the infraspecific taxa. At present, it is likely that the taxonomic status of the involved taxa will change within the frame of a comprehensive revision of the Afrotropical fauna.

References based on Global Ant Biodiversity Informatics

 * Borowiec L. 2014. Catalogue of ants of Europe, the Mediterranean Basin and adjacent regions (Hymenoptera: Formicidae). Genus (Wroclaw) 25(1-2): 1-340.
 * Collingwood C. A. 1985. Hymenoptera: Fam. Formicidae of Saudi Arabia. Fauna of Saudi Arabia 7: 230-302.
 * Collingwood, C. A. and D. Agosti. 1996. Formicidae (Insects: Hymenoptera) of Saudi Arabia (Part 2) Fauna of Saudi Arabia 15: 300-385.
 * Collingwood, C. A., and Donat Agosti. "Formicidae (Insecta: Hymenoptera) of Saudi Arabia (Part 2)." Fauna of Saudi Arabia 15 (1996): 300-385.
 * Forel A. 1892. Liste der aus dem Somaliland von Hrn. Prof. Dr. Conr. Keller aus der Expedition des Prinzen Ruspoli im August und September 1891 zurückgebrachten Ameisen. Mitteilungen der Schweizerischen Entomologischen Gesellschaft 8: 349-354.
 * Monks J., S. Ross, M. Geiser, J. De Prins, M. Sharaf, N. Wyatt, S. Al Rijeibi, and A. Polaszek. 2019. A preliminary survey of the insect fauna of the Hajar Mountain Range, Oman. Journal of Natural History 53(15-16): 939-963.
 * Sharaf M. R., B. L. Fisher, H. M. Al Dhafer, A. Polaszek, and A. S. Aldawood. 2018. Additions to the ant fauna (Hymenoptera: Formicidae) of Oman: an updated list, new records and a description of two new species. Asian Myrmecology 10: e010004
 * Sharaf M. R., S. A. Aldawood, and F. Hita Garcia. 2019. Review of the Arabian Crematogaster Lund (Hymenoptera, Formicidae), synoptic list, distribution, and description of two new species from Oman and Saudi Arabia. ZooKeys 898: 27-81
 * Soulié J., and L. D. Dicko. 1965. La répartition des genres de fourmis de la tribu des "Cremastogastrini" dans la faune éthiopienne et malgache. Hymenoptera - Formicoidea - Myrmicidae. Ann. Univ. Abidjan Sér. Sci. 1: 85-106.
 * Wheeler W. M. 1922. Ants of the American Museum Congo expedition. A contribution to the myrmecology of Africa. II. The ants collected by the American Museum Congo Expedition. Bulletin of the American Museum of Natural History 45: 39-269.
 * 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