Rediscovery of Eulibitia ectroxantha (Mello-Leitão, 1941) and synonymy of Sphalerocynorta Mello-Leitão, 1933 (Opiliones: Cosmetidae).

The species Brachylibitia ectroxantha was described by Mello-Leitão in 1941 and since then it was never again reported or studied. Its type is certainly lost and his identity was until now a mystery; it is currently considered as species inquirenda and transferred to Eulibitia in a recent revision of the genus. Herein, we designate a neotype and provide a redescription of the species based on fresh material from Belén (Boyacá, Colombia) 50km SW from the type locality, across the Chicamocha River. The species is recognizable by the blot pattern of the ladder mask of the dorsal scutum, the absence of groin warts in coxa IV and of armature in some areas of the mesotergum. Additional data about the genus is offered, and the species Cynortaambigua is herein recognized as a junior synonym of Eulibitia scalaris, involving the synonymy of the genus Sphalerocynorta Mello-Leitão, 1933.