Crematogaster sabatra NEW SPECIES (Fig. 34 & 40) Holotype worker. MADAGASCAR: P.N. Befotaka–Midongy, - 23.84080, 46.95750, 1250m, 17.– 19.xi. 2006, beating low vegetation, montane rainforest, B.L.Fisher et al. # 15075 (CASENT0193162, specimen image on antweb) (deposited in CASC). Paratypes. 4 w, same locality as holotype, ex dead branch above ground (B.L.Fisher # 15066, CASENT0193541, CASENT0193554, CASENT0193553 and CASENT0193552) (deposited in MCZC, SAMC, MHNG, UCDC). Material examined. (CASC) MADAGASCAR: Fianarantsoa: 29km SSW Ambositra, Ankazomivady [=P.C. Ankazomivady]: - 20.77667, 47.16500, 1700m (B.L.Fisher); 40km S Ambalavao, Rés. Andringitra (=P.N. Andringitra): - 22.21667, 46.96667, 1275m (B.L.Fisher); R.S. Kalambatritra: - 23.46350, 46.46310, 1270m (B.L.Fisher et al.); P.N. Befotaka-Midongy: - 23.84080, 46.95750, 1250m (B.L.Fisher et al.). Worker measurements (n= 10). HW 1.15–1.31; HL 1.03–1.15; EL 0.26–0.30; SL 0.86–0.98; WL 1.20– 1.34; SPL 0.27–0.42; PTH 0.22–0.25; PTL 0.29–0.38; PTW 0.32–0.37; PPL 0.20–0.23; PPW 0.28–0.31; LHT 0.96–1.10; CI 1.09–1.15; OI 0.23–0.28; SI 0.84–0.88; SPI 0.22–0.33; PTHI 0.60–0.84; PTWI 0.89–1.26; PPI 1.31–1.52; LBI 1.16–1.24. Worker description. Large to very large species (HW 1.15–1.31,WL 1.20–1.34). Masticatory margin of mandibles with 5 teeth; posterior margin of head straight, laterally forming subangular corners; antennal scapes surpassing posterior margin of head easily; midline of eyes situated well above midline of head in full face view. Pronotum laterally angular; promesonotal suture usually incomplete, impressed only laterally; dorsum of promesonotum more or less flat in lateral view; antero-medial portion of mesonotum from slightly raised to prominently raised with respect to pronotum, but not tuberculate; dorsal face of mesonotum flat, lateral portion from broadly to sharply angular; mesonotum postero-laterally angular or tuberculate, and with a distinct posterior face; propodeal spines massive, medium to large size (SPI 0.22–0.33), at least longer than ...