Transvaal Thick-Tail Scorpion

The Transvaal Thick-Tail Scorpion (Parabuthus transvaalicus), is a large scorpion with an average length between 80mm to 100mm in length, reaching 120mm in some areas. Overall charcoal-black to greyish brown, the carapace is granular in texture. Legs are lighter in colour towards the extremities. Spines in tail segments 4 and 5. Readily stridulates then threatened, with venom visibly dripping from the end of the sting. Often seen at foraging for prey at night on roads and open areas. 

Similar in appearance to the:

• Olive Lessor Thick-Tail Scorpion.

Quick to use secondary defensive behaviour, stings from this large, highly venomous species are common. Excluding any patient, situation and response related factors, a sting from the species typically results in class 3 or 4 symptoms.  A sting from this species is associated with red flags.

• Class 3 Symptoms: Contact a helpline for advice or medical professional.
• Class 4 Symptoms: Immediately transport the patient to medical assistance. 

This species is responsible for a number of human and animal deaths annually. Children under the age of 8 and the aged are at greater risk of life threatening symptoms. Stings in animals (dogs) require urgent medical intervention (antivenom). South African Vaccine Producer Scorpion Antivenom is used to treat the sting of this scorpion in both humans and animals. SAVP Scorpion Antivenom is manufactured using the venom of this scorpion. 

Further reading

• Antivenom shortage