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2015. Low field metabolic rates for geckos of the genus Rhoptropus may not be surprising. Journal of Arid Environments
113 35-42
… Geckos of the genus Rhoptropus are small diurnal lizards occurring in arid regions of Namibia and Angola, and are not well studied relative to other desert lizards. Rhoptropus afer has a field metabolic rate significantly lower than that of other desert … turnover, foraging behavior, and thermal biology of Bradfield's Namib day gecko, Rhoptropus bradfieldi, in the Namib Desert. This species occupies rocky habitats and feeds on arthropods …
1996. The evolution of locomotor morphology in Rhoptropus (Squamata: Gekkonidae): Functional and phylogenetic considerations. African Journal of Herpetology 45 (1) 8-30
… differences in the scaling relationships among the five Namibian species of the genus Rhoptropus. R. afer differs from all other taxa in y-intercept and size of ordinate variable at … reflecting functional constraint imposed by the hyperextensive scansorial system of the toes. Rhoptropus afer also typically has one fewer presacral vertebra than its congeners. There is no evidence that these features of R. afer are shared by its sister taxon, R. bradfieldi. It therefore seems likely that R. afer has evolved these locomotor characteristics, …
Website link:http://dx.doi.org/10.1080/21564574.1996.9649959
1996. Phylogenetic systematics of the day geckos, genus, Rhoptropus (Reptilia: Gekkonidae), of south-western Africa. Journal of Zoology 238 (4) 635-663
… The genus Rhoptropus consists of six species of diurnal, chiefly rupicolous, geckos that are endemic to … analysed cladistically yield a single most parsimonious pattern of relationships: ((R. afer, R. bradfieldi) (R. taeniostictus (R. boultoni (R. barnardi, R. biporosus)))). Support for the … of the Namib Desert and movement of the Namib sands. Rates of evolution among the lineages of Rhoptropus appear to be unequal and R. afer, a species largely restricted to horizontal sheet …