Macroderes cornutus Frolov & Scholtz, 2005

Abdalla, Ishtiag H., Deschodt, Christian M., Scholtz, Clarke H. & Sole, Catherine L., 2018, An update to the taxonomy of the genus Macroderes Westwood 1842 (Coleoptera: Scarabaeidae: Scarabaeinae) with descriptions of new species from South Africa, Zootaxa 4504 (1), pp. 41-75: 49-50

publication ID

https://doi.org/10.11646/zootaxa.4504.1.3

publication LSID

lsid:zoobank.org:pub:52BA28B6-4280-4BD0-8B38-C794F04E4A66

persistent identifier

http://treatment.plazi.org/id/B276DC1E-FFAA-FFEF-FF0D-FA36FBD507C1

treatment provided by

Plazi

scientific name

Macroderes cornutus Frolov & Scholtz, 2005
status

 

Macroderes cornutus Frolov & Scholtz, 2005 

( Figs. 5View FIGURES 3–6, 30View FIGURES 24–39, 41View FIGURES 40–45, 47, 48, 50View FIGURES 46–51)

Macroderes cornutus Frolov & Scholtz, 2005: 391  .

Type locality. Namaqualand, Sand kop 322 [29°38'32''S 17°08'53''E].

Type material examined. Holotype, ♂ ( TMSA)  : “S. Afr : NAMAQUALAND / SAND KOP / 322 / 29° 38' 31'' S– 17° 08' 53'' E / 19. VIII. 1 996 / J. duG. HARRISON leg [printed] // UNIV / PRET / ZOO & ENTO / J. duG. HARRISON / 1996 / SITE 61 NO c / VEGETATED DUNE / nr / K. BUSH. RAT. TEST [printed] // HOLOTYPUS / Macroderes cornutus  / Frolov & Scholtz / 2003 [red label, printed]”GoogleMaps  ; Paratypes: 1 ♂ and 3 ♀♀ ( TMSA)  , same data as holotypeGoogleMaps  . 1 ♀ ( TMSA)  : “S. Afr / Namaq / Coast / Strandfontein farm / 30° 33' S 17° 22' E [printed] // 2.9.1977 / E–Y: 1373 / singled dunes / Endrödy—Younga leg [printed] // PARATYPUS / Macroderes cornutus  / Frolov & Scholtz / 2003 [red label, printed]”GoogleMaps  ; 4 ♂♂: “ RSA / Northern Cape Prov / 3 km / W of / Wallekraal / A. Frolov & Deschodt leg [printed] // AF-003(11) / 2–13. IX. 2003 / S 30 2214.74° E 0 17 2844. 93° [printed] // PARATYPUS / Macroderes cornutus  / Frolov & Scholtz / 2003 [red label, printed]”  : 3 ♂♂ in ( UPSA)  , 1 ♂ in ( SANC)  .

Additional material examined. 1 ♀ ( UPSA): “ 30.730175° S 17.523828° E / 15 August 2008 ”GoogleMaps  .

Size range. Males length: 11.0– 11.8 mm, width: 7.4–8.0 mm; females length: 10.4–11.6 mm, width 7.0– 7.4 mm.

Differential diagnosis. M. cornutus  resembles M. foveatus  by having the same deep triangular concavity in the base of pronotum ( Figs. 5View FIGURES 3–6, 41View FIGURES 40–45). Also the presence of the large rounded tubercle in the middle of the frontal suture ( Figs. 48, 50View FIGURES 46–51) makes this species one of the more easily recognizable Macroderes  species.

Habitat and distribution. So far this species is known only from the three localities in the Northern Cape Province. The localities stretch along the western coastline of South Africa within the Succulent karoo eco-region ( Fig. 2). Generally the area is characterised by its aridity and winter rains associated with cold frost.

Remarks. Due to the lack of adequate data regarding the species distribution and as it has a small distribution range this species is categorized as Data Deficient (Davis 2013). Some of the localities from which the species were collected are protected and managed by the government, however, as it is flightless and has a restricted distribution range it is well matched to two of three criteria from category B for threatened species which would consider the species as NEAR Threatened in the IUCN Red List (Davis 2013).

TMSA

Transvaal Museum

UPSA

University of Pretoria

SANC

Agricultural Research Council-Plant Protection Research Institute

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Scarabaeidae

Genus

Macroderes

Loc

Macroderes cornutus Frolov & Scholtz, 2005

Abdalla, Ishtiag H., Deschodt, Christian M., Scholtz, Clarke H. & Sole, Catherine L. 2018
2018
Loc

Macroderes cornutus

Frolov, A. V. & Scholtz, C. H. 2005: 391