Diagnosis. Macroderes namakwanus is very similar to M. endroedyi but can be separated from it in having the base of the pronotum with denser, regular punctures and without distinct tubercles in-between, elytral intervals less shagreened, without distinct shiny tubercles, and less curved basal part of internal sac of aedeagus. Body size of males: length 10.5-12.5 mm, width 7.0-8.2 mm; females: length 11.5-12.0 mm, width 8.0-8.1 mm.

Macroderes namakwanus

Distribution. Macroderes namakwanus is distributed mostly in the Namaqualand with one specimen collected in southern Richtersveld (South Africa).