Table2 Estimates of evolutionary divergence for the concatenated alignment %COI and COII) for mean p -distances %±SE) within the groups

Genetic group	Number of sequences	Mean p -distances
Northern Namib	15	0.0363± 0.0038
Western Kalahari Basin	9	0.0101± 0.0024
East Gariep	13	0.0085± 0.0018
Nama	7	0.0265± 0.0032
Southern Namib	5	0.0315± 0.0040
Southwestern Kalahari	8	0.0129± 0.0029
Succulent Karoo	8	0.0100± 0.0021