An update to the taxonomy of the genus Macroderes Westwood 1842 (Coleoptera: Scarabaeidae: Scarabaeinae) with descriptions of new species from South Africa Author Abdalla, Ishtiag H. Author Deschodt, Christian M. Author Scholtz, Clarke H. Author Sole, Catherine L. text Zootaxa 2018 2018-10-23 4504 1 41 75 journal article 28091 10.11646/zootaxa.4504.1.3 0b803003-244e-4511-aaf4-5e9c3f863861 1175-5326 2606164 52BA28B6-4280-4BD0-8B38-C794F04E4A66 Macroderes arrowi Janssens, 1939 ( Figs. 4 , 59 , 70 ) Macroderes arrowi Janssens, 1939 : 26 ; Ferreira 1969 : 320 ; Frolov & Scholtz 2005 : 389 . Type locality. South Africa , Cape Prov, 11 Km N v Rhynsdorp [Vanrhynsdorp: 31°37'S 18°44'E ] . Type material examined. None. Type series is deposited in IRSNB ( Frolov & Scholtz 2005 ). Additional material examined. 2 ♂♂ and 2 ♀♀ ( UPSA ): “ RSA / Western Cape Prov / 11 Km / N of Vanthynsdorp / A. Frolov & C. Deschodt leg // AF-00 45 (25) / 5–11. IX. 2003 / S 31. 3028.28° E 018.4302.56°” ; 2 ♀♀ ( UPSA ): “ South Africa / Western Cape Prov / 124 km N of / Sandveld / S31.49859° E018.71642° / 15. 8. 2015 / C. Deschodt & W. P. Strümpher leg” . Size range. Males length: 9.9–11.7 mm , width: 6.3–8.3 mm ; females length: 9.7–10.5 mm , width: 6.5–7.7 mm . Differential diagnosis. Due to it is carinate margins of elytra ( Fig. 70 ) M. arrowi resembles M. foveatus , M. cornutus and M. greeni , however, it can be easily distinguished from the two former species as it lacks the deep triangular concavity at the base of the pronotum ( Fig. 4 ) and from all others by having a granular pronotum ( Fig. 59 ) instead of rounded punctures found in M. greeni and longitudinal punctures in M. cornutus and M. foveatus . Habitat and distribution. So far this species is only known from Vanrhynsdorp and Sandveld areas ( Fig. 2 ). The two localities are situated in the Western Cape Province . Vanrhynsdorp is an arid area close to Namaqualand’s coast. The area is covered by succulent vegetation and characterised by rather humid climate and low annual rainfall. Sandveld situated to the west of the Cedarberg Mountains and is characterised by a rich biodiversity of animals and plants.