[3] P. robertsi is found near Keetmanshoop and Karasburg where the type specimen was caught in the Great Karas Mountains in southern Namibia.

[3] Although there are no obvious immediate threats to the species P. robertsi, it appears to have a limited distribution which would make it more vulnerable to habitat loss.

[2] The specific name, robertsi, is in honour of South African zoologist J. Austin Roberts,[4] who was part of the Expedition to South-West Africa and Little Namaqualand when the types specimen was collected on 12 August 1937.

[5] The shielded thick-toed gecko is a light olive brown colour with darker spots that cover the back; a line of these darker spots runs down the spine.

The underside of the head, throat, body and limbs are a much paler colour.