Tribe Smicromyrmini Bischoff, 1920

Smicromyrmini Bischoff, 1920: 23; Invrea 1964: 151 (Smicromyrminae); Brothers 1975: 592 (Smicromyrmina); Lelej 1985: 180; Lelej 1995b: 2; Lelej & Nemkov 1997: 4; Brothers 1999: 245 (Smicromyrmina); Brothers & Lelej 2017: 47; Pagliano et al. 2020: 169.

Diagnosis. MALE. Eye without setae; inner margin deeply notched. F1 shorter than F2. Scutellum simple, without median carina or postero-lateral denticle. Wing venations not reaching outer wing margin; distance between origin of RS on vein Sc and base of stigmatic cell nearly 2 × stigmatic cell length; hind wing without anal lobe. Tarsal claws without inner denticles. Metasomal segment 1 narrow; segment 2 with lateral felt line on T2 and sometimes on S2; S8 not reduced, plate-like; genitalia with symmetrical penis valves. FEMALE. Head not enlarged; eye oval, slightly protruding from head capsule, without setae; maxillary palpus six segmented; labial palpus four segmented. Mesosoma widest at pronotum or propodeum; mesopleuron concave; meso-metapleural suture ending at pronotal spiracle; dorsum of propodeum without row of denticles. Claws without inner denticles. T1 much narrower than T2, not petiolate; T2 with one or three, (two lateral transverse in some Mickelomyrme, subbasal band in some Dentilla, discal spots entirely obliterated in some species of many genera) subbasal spots of pale setae or without any spots.

Genera included. 26 genera and 5 subgenera (Brothers & Lelej 2017, Pagliano et al. 2020).

Diversity and distribution. Widely distributed in the Old World and numbers 26 genera, 528 species:Palaearctic (13/213), Afrotropical (15/126), and Oriental (14/204) Regions (Lelej 2007, Pagliano et al. 2020, Thaochan et al. 2022). The endemic genera are: Nuristanilla Lelej in Lelej & Kabakov, 1980, ♀ and Skorikovia Ovtchinnikov, 2002, ♁, ♀ in the Palaearctic Region; Indratilla Lelej, 1993, ♁, ♀; Karunaratnea Lelej, 2005, ♁, ♀; Nordeniella Lelej, 2005, ♁, ♀, and Tsunekimyrme Lelej, 1995b, ♁ in the Oriental Region; and Antennotilla Bischoff, 1920, ♁; Corytilla Arnold, 1956, ♁, ♀; Ctenoceraea Nonveiller, 1993, ♁; Guineomutilla Suárez, 1977, ♀; Gynandrotilla Arnold, 1946, ♁; Paglianotilla Lelej in Lelej & van Harten, 2006, ♁; Psammotherma Latreille, 1825, ♁; Pseudocephalotilla Bischoff, 1920, ♁, ♀; and Sulcotilla Bischoff, 1920, ♁, ♀ in the Afrotropical Region.

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