Tree Creeping Scorpion

The Tree Creeping Scorpion (Cheloctonus asper), is a medium sized scorpion, average 65mm to 85mm in length, attaining 70mm in other areas.  Colouration black with pale legs and sting.  Asper refers to the course granulations on the pincers. A very common scorpion, they shelter off the ground in cracks in trees, under loose bark, in thatch roofs where supporting pole meet, and in stone walls. Easily seen at night having out of their shelter in a tree, waiting to ambush prey. Often seen running out of log placed in a fire. Where a suitable habitat occurs, this species can be very common. 

Similar in appearance to:

• Lowveld Creeping Scorpion.
• Jones's Lessor Creeping Scorpion.

Previously referred to as Opistacanthus asper, the name of this scorpion has changed as per Prendini 2026.

Relying on primary defensive behaviour, stings from this medium sized, weakly venomous species are common. Excluding any patient, situation and response related factors, a sting from the species typically results in class 1 or 2 symptoms. 

• Class 1 Symptoms: No medical intervention required.
• Class 2 Symptoms: Refer to class 2 first aid protocols.