assumed to be harmless. However, Opistophthalmus glabrifrons is an exception to the rule. Opistophthalmus species are burrowing scorpions, and probably never leave their burrows except when coming out to mate. This probably accounts for the timing and relative rarity of their stings. References Scorpions of southern Africa http://www.afpmb.org/sites/default/files/pubs/guides/field_guide.pdf Scorpionidae Scorpions of Africa