Lourenço 1986, Lourenço and Pinto-da-Rocha 1997, Fet et al. 2000, Lourenço 2008, Esposito et al. 2017.

Region of Kourou, forest patches of Degrad path, one male (holotype), MNHNRS8631, mission M. Boulard & P. Pompanon coll., VIII/1975.

Large scorpion in relation to the species of the genus, with 89.7 mm in total length for the male holotype. Very dark coloration, uniformly blackish. Carapace and mesosoma blackish. Venter dark reddish to blackish. Metasomal segments I to V blackish. Vesicle dark reddish to blackish. Chelicerae dark reddish with a blackish thread; fingers dark. Pedipalps blackish; fingers reddish. Legs dark reddish, intensely spotted with blackish. Carapace strongly granular; anterior margin with a median concavity; anterior median and posterior median carinae strong; all furrows moderately deep. Tergites strongly granular; median carina strong in all tergites; tergite VII pentacarinate. Sternum triangular. Pectinal tooth count 24–25 in male. Sternites smooth with elongate spiracles; VII with four carinae and some lateral granulations. Metasomal segments I and II with ten carinae; III and IV with eight carinae; V with five carinae; inframedian carinae complete on II. Telson weakly granular, with a long and strongly curved aculeus; dorsal surface smooth; ventral surface granular; subaculear tooth absent. Pedipalp femur pentacarinate; patella with seven carinae; chela with nine carinae; internal side of patella with spinoid granules; all sides moderately to weakly granular; a very intense chaetotaxy can be observed in all segments; fixed and movable fingers with 9–10 oblique rows of granules; internal and external accessory granules strongly marked. Leg tarsus ventrally with numerous short fine setae.