The species of Platysaurus exhibit sexual dimorphism. Females and juveniles often have black or brown backs with white stripes, while males are much more colored. Also, males are somewhat larger than females.
Boulenger GA (1885). Catalogue of the Lizards in the British Museum (Natural History). Second Edition. Volume II. ... Zonuridæ ... London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xiii + 497 pp. + Plates I-XXIV. (Genus Platysaurus, p. 261).
Branch, Bill (2004). Field Guide to Snakes and other Reptiles of Southern Africa. Third Revised edition, Second impression. Sanibel Island, Florida: Ralph Curtis Books. 399 pp. ISBN0-88359-042-5. (Genus Platysaurus, p. 198).