Digitonthophagus namaquensis Génier

Génier, François & Moretto, Philippe, 2017, Digitonthophagus Balthasar, 1959: taxonomy, systematics, and morphological phylogeny of the genus revealing an African species complex (Coleoptera: Scarabaeidae: Scarabaeinae), Zootaxa 4248 (1), pp. 1-110: 70-72

publication ID

10.5281/zenodo.439444

publication LSID

lsid:zoobank.org:pub:71F0AC03-C1FB-40AB-8532-99A638FC91E9

persistent identifier

http://treatment.plazi.org/id/48DC7E17-6D54-4345-9746-183D5D580AB8

taxon LSID

lsid:zoobank.org:act:48DC7E17-6D54-4345-9746-183D5D580AB8

treatment provided by

Plazi

scientific name

Digitonthophagus namaquensis Génier
status

new species

Digitonthophagus namaquensis Génier  , new species

http://zoobank.org/urn:lsid:zoobank.org:act:48DC7E17-6D54-4345-9746-183D5D580AB8 ( Figs. 22View FIGURES 19 – 22, 53–54View FIGURES 47 – 54. 47, 49, 51, 53, 70View FIGURES 63 – 70, 86View FIGURES 79 – 86, 117–118, 134, 180–182, 189; Map 17)

Type locality. Farm Klipkoppies (6) (28.87137 S 21.30944 E), 957 m, Northern Cape, South Africa.GoogleMaps 

Description. Holotype ♂ ( Fig. 22View FIGURES 19 – 22). Measurements. Length 10.5 mm, width 6.0 mm. Head ( Figs. 53–54View FIGURES 47 – 54. 47, 49, 51, 53). Anterior clypeal edge straight on median fifth in dorsal view; clypeofrontal carina broadly arcuate and interrupted at gena; vertex lacking median tubercle, surface with punctures fine to small, separated by one to four diameters, scabrous. Horns rather short, slightly arcuate in frontal view, gradually tapering from base to apex; posterointernal edge unmodified basally, apicointernal surface with few scabrous punctures; genal edge slightly upturned and broadly arcuate, forming a broad angle with clypeal edge. Pronotum ( Fig. 70View FIGURES 63 – 70). Surface with weakly-defined granulate punctures on anterior half only, with scattered punctures on posterior half of disc; punctures scattered and small posterolaterally, with distinct minute punctures throughout; anteromedian tubercle atrophied, forming an obtuse angle in lateral view, median longitudinal sulcus rather wide and moderately deep; surface behind the eyes with a transverse oval and shallow depression, surface of anterior angles slightly concave; anterior half of lateral edge arcuate in dorsal and lateral view; posterior angles slightly upturned and simply arcuate in dorsal view; anterior hypomeral ridge broadly arcuate anteriorly, anterior hypomeral depression surface light in color. Elytra ( Fig. 22View FIGURES 19 – 22). Interval 2 with one to three fine granules on apical declivity, interval 4 lacking fine granules from base to apex. Legs. Protibial apicointernal tooth enlarged, with dorsal ridge extending to apex. Aedeagus ( Fig. 134View FIGURES 119 – 134). Parameres with dorsal and ventral edges slightly diverging toward apex in lateral view. Internal sac sclerites ( Figs. 180–182View FIGURES 171 – 182). Axial sclerite arcuate, with apex acute. Subaxial sclerite, gradually tapering from base to apex, extending straight and interrupted before apex of frontolateral peripheral sclerite apical portion, with a brush of villi on apical fourth. Frontolateral peripheral sclerite basoventral apophysis large; lacking medioventral carinae; right lateral fold produced into a rather small everted and open apically conical process with irregular apical edge located behind oblique right lateral edge of apical lobe; left lateral lobe membranous, slightly developed; subapicodorsal lobe membranous, small and obliquely projecting dorsally, interrupted well before anterior edge of apical lobe, apex set on left side in dorsal view; apical lobe truncate and slightly directed obliquely on left side, lateral edges folded ventrally, with a small additional longitudinal fold in line with subapicoventral lobe; apical villi becoming longer toward apex; subapicoventral lobe acute in lateral view, interrupted before apex of apical lobe.

Variation. Measurements (97 ♂♂, 74 ♀♀). Length: male 7.0–12.0 mm (10.0 ± 0.9 mm), female 8.0– 11.5 mm (9.9 ± 0.8 mm). Females allotype. Cephalic outline in dorsal view as in Fig. 86View FIGURES 79 – 86; vertex with a high and broadly arcuate, transverse carina, dorsal edge subangular medially in frontal view, lateral portion gradually sloping down posteriorly; anterior pronotal tubercles well developed, external lateral edges distinctly widening toward apex in dorsal view, anterolateral surface obliquely excavated, anterosuperior edge slightly arcuate in dorsal view (Fig. 117), lateral portion of anterosuperior edge slightly upturned (Fig. 118). Anterior tibia short, with external teeth more robust.

Primary type data. Holotype ♂ (CMNC): [SOUTH AFRICA: N. CAPE / Farm Klipkoppies (6) / S28.87137° E21°30.944’ [sic] / 957 m; 12–14 March 2004 / A.L.V. Davis & C. Deschodt]; [WORLD / SCARAB. / DATABASE / WSD00029107] barcode label; [HOLOTYPE ♂ / Digitonthophagus  / namaquensis  n.sp. / des. F. Génier, 2016] red card.

MAP 17. Distribution of Digitonthophagus namaquensis  .

Material examined (100 ♂♂, 75 ♀♀), distribution (Map 17): ANGOLA: BENGUELA  , Benguela (12°35'S, 13°25'E), [no date], [illegible]— 1 ♀, 1 ♂ (paratypes) ( IRSNBAbout IRSNB)GoogleMaps  ; NAMIBIA: ERONGO, Ameib Farm, 19 km NW Karibib (21°47'S, 15°38'E), 31.i–2.ii.1972GoogleMaps  , Southern Africa Expedition— 1 ♂ (paratype) ( BMNH)  ; Gobabeb (23°34'S, 15°2'E), 10.ii.1978, O. Lomhodlt— 1 ♂ (paratype) ( ZMUCAbout ZMUC)GoogleMaps  ; Kahn River, 5 mi. N Usakos (22°0'S, 15°36'E), 30–31.i.1972GoogleMaps  , Southern Africa Expedition— 1 ♀, 1 ♂ (paratypes) ( BMNH); Kuiseb Canyon (23°18'S, 15°45'E), 22–23.i.1972GoogleMaps  , Southern Africa Expedition— 1 ♀, 1 ♂ (paratypes) ( BMNH)  ; HARDAP, Farm Lovedale, N Tiras Mountains , 1600 m (25°32'24''S, 16°23'24''E), 16–17.ii.2010, W. Schawaller— 1 ♀, 5 ♂♂ (6 paratypes) ( SMNSAbout SMNS)GoogleMaps  ; Sesriem Farm, Maltahoe District (24°11'S, 15°59'E), 19–20.i.1972, Southern Africa Expedition— 1 ♀ (paratype) ( BMNH)GoogleMaps  ; Voigtgrund (24°49'S, 17°26'E), [no date], K. Jordan— 1 ♀, 2 ♂♂ (3 paratypes) ( BMNH)GoogleMaps  ; Malthahöhe district, Zais 6 (24°2'58''S, 16°9'14''E), 16.i.2000, Mann & Marais— 1 ♀ (paratype) ( OUMNH)GoogleMaps  ; Rehoboth district, on road verge, Kambes 498 (24°4'32''S, 16°28'21''E), 17.i.2000, Mann & Marais— 1 ♀, 3 ♂♂ (4 paratypes) ( OUMNH)GoogleMaps  ; KARAS, Barby Farm, 25 mi. W Helmeringhausen (25°53'S, 16°49'E), 17–18.i.1972GoogleMaps  , Southern Africa Expedition— 11 ♀♀, 16 ♂♂ (27 paratypes) ( BMNH)  ; Keetmannshoop (26°34'S, 18°8'E), 1913, S. Hardt & G. Lotz— 3 ♀♀, 2 ♂♂ (5 paratypes) ( SMFAbout SMF)GoogleMaps  ; Mesosaurus Fossil Farm, NE Keetmanshoop, 1100 m (28°14'24''S, 18°16'48''E), 18–19.ii.2010, W. Schawaller—1 ♂ (paratype) (SMNS); Noachabeb, 27 mi. NNE Grunau (27°23'S, 18°28'E), 10–12.i.1972, Southern Africa Expedition— 3 ♀♀, 5 ♂♂ (8 paratypes) ( BMNH)GoogleMaps  ; near Onseepkans, Orange RIVER banks (28°44'S, 19°18'E), 8–10.i.1972GoogleMaps  , Southern Africa Expedition— 1 ♂ (paratype) ( BMNH)  ; Plateau Farm, 22 mi. E Aus (26°38'S, 16°34'E), 14–17.i.1972GoogleMaps  , Southern Africa Expedition— 1 ♀, 1 ♂ (paratypes) ( BMNH)  ; Seeheim (26°49'S, 17°47'E), 16.ii.1934, J. Ogilvie— 1 ♀ (paratype) ( BMNH)GoogleMaps  ; KAVANGO, Mayana Lodge, Rundu District (17°51'55''S, 19°55'48''E), 19.xii.1999, Mann & Marais— 6 ♀♀, 7 ♂♂ (13 paratypes) ( OUMNH)GoogleMaps  ; Mile 46 Agricultutal Station, Sovo area (18°19'14''S, 19°15'28''E), 23.iii.2002, Mann , Marais , & Kasch— 1 ♀, 1 ♂ (paratypes) ( OUMNH)GoogleMaps  ; KHOMAS, Farm Namibgrens, Spreetshoogte , 1800 m (23°22'12''S, 16°8'24''E), 3–6.ii.2010, W. Schawaller— 1 ♀, 2 ♂♂ (3 paratypes) ( SMNSAbout SMNS)GoogleMaps  ; Solitaire (23°53'S, 16°0'E), 22.i.1972, Southern Africa Expedition— 2 ♀♀, 8 ♂♂ (10 paratypes) ( BMNH)GoogleMaps  ; Windhoek (22°34'12''S, 17°5'1''E), 1909, Külz— 2 ♀♀ (2 paratypes) ( SMFAbout SMF)GoogleMaps  ; KUNENE, 87 km W Kamanjab (19°49'S, 14°10'E), 2.iv.1977, J. Boomker— 1 ♂ (paratype) ( BMNH)GoogleMaps  ; Khorixas (20°22'S, 14°58'E), iii.2004, O. Aschenborn— 3 ♀♀, 2 ♂♂ (5 paratypes) (CMD); Orupembe (18°10'S, 12°34'E), 14.iv.2005, W. Schawaller— 1 ♀, 2 ♂♂ (3 paratypes) ( SMNSAbout SMNS)GoogleMaps  ; Palmwag Lodge (19°53'10''S, 13°56'13''E), 18.iv.2005, W. Schawaller— 1 ♀, 2 ♂♂ (3 paratypes) ( SMNSAbout SMNS)GoogleMaps  ; Purros ( Hoaruzsib Valley ) (18°46'S, 12°57'E), 15–16.iv.2005, W. Schawaller— 1 ♀ (paratype) ( SMNSAbout SMNS)GoogleMaps  ; Khorixas District, Ae-ams / Khoanib confluence (19°14'44''S, 13°20'34''E), 28.xii.1999, Mann , Marais , & Newman— 1 ♀, 1 ♂ (paratypes) ( OUMNH)GoogleMaps  ; Hoanib river near Dubis (19°13'36''S, 13°22'E), 28.xii.1999, Mann & Marais— 1 ♂ (paratype) ( OUMNH)GoogleMaps  ; Palm 708, adjacent to spring (19°52'6''S, 14°1'13''E), 4.i.2000, Mann & Marais— 1 ♂ (paratype) ( OUMNH)GoogleMaps  ; Spaarwater 711, near water hole (20°3'24''S, 14°2'55''E), 5.i.2000, Mann & Marais— 3 ♀♀, 1 ♂ (paratypes) ( OUMNH)GoogleMaps  ; Opuwo District, Lower Hoanib (19°23'7''S, 13°4'11''E), 30.xii.1999, Mann & Marais— 1 ♀, 1 ♂ (paratypes) ( OUMNH)GoogleMaps  ; OMUSATI, Narawandu road, Etosha National Park (18°51'4''S, 15°32'55''E), 24–25.xii.1999, Mann & Marais— 1 ♀ (paratype) ( OUMNH)GoogleMaps  ; OSHIKOTO, Mushara area, sandy road (18°36'24''S, 16°53'23''E), 21.xii.1999, Mann & Marais— 1 ♂ (paratype) ( OUMNH)GoogleMaps  ; Mushara Waterhole (18°35'19''S, 16°55'11''E), 23.xii.1999, Mann & Marais— 1 ♂ (paratype) ( OUMNH)GoogleMaps  ; OTJOZONDJUPA, Epupa Falls , 660 m (17°0'3''S, 13°14'36''E), 11–12.iv.2005, W. Schawaller— 3 ♀♀, 4 ♂♂ (7 paratypes) ( SMNSAbout SMNS)GoogleMaps  ; SOUTH AFRICA: EASTERN CAPE, Willowmore (33°18'S, 23°29'E), ii.1916, Dr. Brauns— 1 ♀, 1 ♂ (paratypes) ( NMPCAbout NMPC)GoogleMaps  ; NORTHERN CAPE, Farm Klipkoppies, 957 m (28°52'16.93''S, 21°18'33.98''E), 12–14.iii.2004GoogleMaps  , A.L.V. Davis & C. Deschodt— 11 ♀♀, 12 ♂♂ (holotype, allotype, 21 paratypes) ( BDGC, CMNC, FGICAbout FGIC, OUMNH, PMOC); Groblershoop, Farm Brulpan (28°53'56''S, 21°46'49''E), 23–26.iii.2001GoogleMaps  , A. Davis— 2 ♂♂ (2 paratypes) ( BMNH); Keograbie Farm (1), 1038 m (29°4'33.6''S, 21°46'5.63''E), 6–8.iii.2004GoogleMaps  , A.L.V. Davis & C. Deschodt— 8 ♀♀, 7 ♂♂ (15 paratypes) ( FGICAbout FGIC, PMOC); Rooiplato (31°26'S, 19°24'E), 14.i.1980, [anonymous]GoogleMaps  —1 ♂ (paratype) (BMNH); Upington (28°27'S, 21°15'E), 7.xii.1933, L. Ogilvie— 1 ♀ (paratype) ( BMNH)GoogleMaps  .

Etymology. Namaquensis  (from Namaqualand) a Latin adjective pertaining to the distribution of this species.

Natural history. Davis & Scholtz (2004), collected this species at the Brulpan Farm near Groblershoop, in Bushmanland Nama Karoo, in the south-west arid late summer rainfall region of Northern Cape. Specimens were collected in cow dung baited traps and the species is recorded in this work as a soil generalist. The current data indicates a Namibian savanna woodlands and a Nama karoo centered distribution. Some specimens collected in cow and elephant dung. A single specimen collected under old elephant dung. This species is attracted to mercury vapor and ultraviolet light traps.

IRSNB

Institut Royal des Sciences Naturelles de Belgique

ZMUC

Zoological Museum, University of Copenhagen

SMNS

Staatliches Museum fuer Naturkund Stuttgart

SMF

Forschungsinstitut und Natur-Museum Senckenberg

NMPC

National Museum Prague

FGIC

Francois Genier