Typically they have yellowish bodies with a contrasting blackish color on chelicera, the fingers of the pedipalps, the fifth segment of the tail, and the cephalothorax.

[3] A researcher associated with the Smithsonian Institution assures that "this species is not considered dangerous to humans" but warns that nonetheless that they "are venomous and being stung by one is no picnic.

"[2] According to another researcher's firsthand account of being stung while trying to capture a subadult specimen near Tortuguero, Costa Rica: There was immediate pain, as if being penetrated by a thorn much larger than the actual sting.

[5] In an unusual case reported by the Loma Linda University School of Medicine, a 67-year-old woman presented to a community emergency department in Orange County, California after being envenomed by a scorpion identified as a member of this species.

Patients stung by dangerous scorpions may require airway support, extended observation, antivenom, and avoidance of respiratory depressive medications.

"[4] A case of scorpion sting to the palm of the hand of a scuba diver occurred while trying on a wetsuit on the Osa Peninsula.

Treatment several hours after envenomation with Therapik, a toxin-denaturing device utilizing heat, resulted in complete resolution of symptoms.