Polyrhachis alexisi Forel

<i>Polyrhachis alexisi</i> Forel <i>Polyrhachis alexisi</i> Forel, 1916: 455, fig. 7. Syntype workers, DEM. REP. of the CONGO (<i>H. Kohl</i>) (MHNG) [not seen]. <b>Diagnosis.</b> The only species of the <i>alexisi</i> -group with a combination of four petiolar spines or teeth and immarginate propodeum. This rare, but distinctive species was known from type specimens only (Bolton, 1973). A recently collected worker fully matches the description and drawings reported by Bolton (l.c.) and has these measurements: HL 1.25, HW 1.11, CI 89, SL 1.41, SI 127, FW 0.30, FI 27, PW 1.00, WL 1.56, HTL 1.35. <b>Material examined. CENTRAL AFRICAN REP.</b>: P.N. Dzanga–Ndoki, 21.4 km 53° NE Bayanga, 3°02.01'N 16°24.57'E, 510 m, 6.v.2001 (<i>S. van Noort</i>) (1 w, CAS: CASENT0089667, CAR01-S66).