Stenamma sardoum

Seemingly this is a Sardinian endemic, but maybe it occurs also in Corsica (Rigato & Toni, 2011).

Identification
Rigato (2011) - This species has no unique strong diagnostic features, but, besides its distribution, it is recognisable by the following combination of worker characters: the values of SI (usually ≥ 90) and PCI (range: 25–34) plus relatively low and elongate postpetiole and irregular promesonotal sculpturation. The gyne is similar, except for the sculpturation.

Distribution based on Regional Taxon Lists
Palaearctic Region: Italy, Malta, Spain.

Nomenclature

 *  sardoum. Stenamma sardoum Emery, 1915a: 255, pl. 4, figs. 5, 6 (w.q.) ITALY (Sardinia). See also: DuBois, 1998b: 237; Rigato, 2011: 11.

Worker
Rigato (2011) - Lectotype (designated by DuBois (1998)): TL 3.6; HL 0.87; HW 0.72; CI 83; SL 0.66; SI 92; PnW 0.48; AL 1.00; PeL 0.38; PPL 0.26; PeH 0.20; PPH 0.21; PeW 0.16; PPW 0.21; PI1 68; PI2 53; MTL 0.61; TI 85.

Paralectotype: TL 3.6–3.9; HL 0.86–0.91; HW 0.72–0.77; CI 84–85; SL 0.67–0.70; SI 89–93; PnW 0.48–0.51; AL 1.04–1.10; PeL 0.38–0.42; PPL 0.26–0.29; PeH 0.20–0.23; PPH  0.21–0.23; PeW 0.15–0.18; PPW 0.20–0.23; PI1 68–69; PI2 53–55; MTL 0.61–0.65;  TI 84–86 (3 measured).

TL 3.3–4.3; HL 0.81–0.91; HW 0.67–0.76; CI 82–85; SL 0.63–0.70; SI 89–96;  PCI  25–34;  PnW 0.43–0.51; AL 0.95–1.11; PSI 1.58–1.88; PeL 0.37–0.42; PPL 0.23–0.27; PeH  0.19–0.22; PPH 0.18–0.22; PeW 0.15–0.17; PPW 0.19–0.23; PI1 62–69; PI2 51–57; MTL 0.56–0.65; TI 81–89 (17 measured).

Queen
Rigato (2011) - Paralectotype: TL 4.5; HL 0.95; HW 0.82; CI 86; SL 0.74; SI 90; ScW 0.64; MnL 1.01; PeL 0.48; PPL 0.33; PeH 0.25; PPH 0.26; PeW 0.20; PPW 0.28; PI1 69; PI2 59; MTL 0.72; TI 88.

TL 4.4–5.0; HL 0.92–1.01; HW 0.79–0.85; CI 84–86; SL 0.71–0.76; SI 89–90; PCI 30–34; AL 1.28–1.40; PSI 1.60–2.10; ScW 0.64–0.68; MnL 0.92–1.01; PeL 0.47–0.50; PPL 0.31–0.33; PeH 0.25; PPH 0.24–0.26; PeW 0.20–0.21; PPW 0.26–0.28; PI1 66; PI2 59; MTL 0.66–0.73; TI 84–86 (2 measured).