Chris Mattison / Marico Gecko (Pachydactylus mariquensis latirostris). Namaqualand, Northern Cape, South Africa.

Chris Mattison / Marico Thick-toed Gecko (Pachydactylus mariquensis latirostris). Namaqualand, Northern Cape, South Africa.

Fabio Pupin / Ocellated thick-toed gecko, (Pachydactylus geitje) with regenerated tail, South Africa, February . Non-ex.

Fabio Pupin / Southern rough gecko, (Pachydactylus formosus), South Africa, February . Non-ex.

Fabio Pupin / Western Cape thick-toed gecko, (Pachydactylus labialis), Little Namaqualand, South Africa, February . Non-ex.

Fabio Pupin / Namib web-footed gecko, (Pachydactylus rangei), Namib desert, Namibia, February . Non-ex.

Emanuele Biggi / Namib sand gecko (Pachydactylus rangei) wide angle portrait, Dorob National Park, Swakopmund, Namibia

Emanuele Biggi / Namib sand gecko (Pachydactylus rangei) portrait, Dorob National Park, Swakopmund, Namibia

Emanuele Biggi / Namib sand (Pachydactylus rangei) close up portrait showing eyes, Dorob National Park, Swakopmund, Namibia

Lucas Bustamante / Giant Ground Gecko (Chondrodactylus angulifer), close-up of eye, Swakopmund, Erongo, Namibia.

Lucas Bustamante / Namib sand gecko (Pachydactylus rangei) portrait, Swakopmund, Erongo, Namibia.

Emanuele Biggi / Palmated gecko (Pachydactylus rangei) with fluorescent body areas when illuminated by UV torch, Namibia