Nebo hierichonticus can reach a length of 14 cm. Its basic color ranges from a light brown or reddish-brown to dark brown. Its legs are yellowish. It has a thinmetasoma and large pedipalps and chelae. The base of the sting is oval, with a quite short sting. Venom of this species is quite toxic, causing hemorrhage and necrosis, but the effects of the sting on humans is almost negligible, without any long-term effects.