Digitonthophagus aksumensis 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: 57-59

publication ID

10.5281/zenodo.439444

publication LSID

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

persistent identifier

http://treatment.plazi.org/id/2316941C-3BDF-4900-9212-25C83F5AC88F

taxon LSID

lsid:zoobank.org:act:2316941C-3BDF-4900-9212-25C83F5AC88F

treatment provided by

Plazi

scientific name

Digitonthophagus aksumensis Génier
status

new species

Digitonthophagus aksumensis Génier  , new species

http://zoobank.org/urn:lsid:zoobank.org:act:2316941C-3BDF-4900-9212-25C83F5AC88F ( Figs. 17View FIGURES 15 – 18, 43–44View FIGURES 39 – 46. 39, 41, 43, 45, 65View FIGURES 63 – 70, 81View FIGURES 79 – 86, 107–108, 129, 165–167, 184; Map 12)

Type locality. Obock, Colonie française des Somalies [= Djibouti]. 

Diagnosis. Male cephalic horns lacking granules internally at apex ( Fig. 44View FIGURES 39 – 46. 39, 41, 43, 45); FLP sclerite apical portion rather large, obliquely oriented and tapering to apex ( Fig. 165–166View FIGURES 159 – 170); males with pronotal anterior angles surface convex, simply round anteriorly ( Fig. 43View FIGURES 39 – 46. 39, 41, 43, 45); FLP sclerite ventral portion with two carinae ( Fig. 167View FIGURES 159 – 170); SA sclerite apex approximately in line with apex of apical portion of FLP sclerite ( Figs. 165–166View FIGURES 159 – 170).

Description. Holotype ♂ ( Fig. 17View FIGURES 15 – 18). Measurements. Length 11.0 mm, width 6.5 mm. Head ( Figs. 43–44View FIGURES 39 – 46. 39, 41, 43, 45). 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. Horns rather short, slightly divergent in frontal view, gradually tapering from base to apex; posterointernal edge produced into an low, angular projection basally; apicointernal surface lacking granules; genal edge upturned and distinctly angulate on anterior third, forming a distinct angle with clypeal edge. Pronotum ( Fig. 65View FIGURES 63 – 70). Surface with granulate punctures restricted to anterior half medially, with distinct umbilicate punctures on posterior half of disc; punctures weaker but distinct posterolaterally with distinct, minute punctures throughout. Anteromedian tubercle atrophied, forming an obtuse angle in lateral view, median longitudinal sulcus weakly-defined; surface behind the eyes with a simple round depression, surface of anterior angles convex; anterior half of lateral edge arcuate in dorsal and lateral view; posterior angles slightly upturned and simply arcuate in dorsal view. Anterior hypomeral ridge arcuate, anterior hypomeral depression slightly darker in color medially. Elytra ( Fig. 17View FIGURES 15 – 18). Intervals 2 and 4 lacking fine granules from base to apex. Legs. Protibial apicointernal tooth enlarged, with dorsal ridge extending to apex. Aedeagus ( Fig. 129View FIGURES 119 – 134). Parameres with dorsal and ventral edges slightly diverging toward apex in lateral view. Internal sac sclerites ( Figs. 165–167View FIGURES 159 – 170). Axial sclerite weekly sclerotized, reduced in size and almost straight. Subaxial sclerite, large basally and abruptly reduced, extending straight approximately in line with apex of frontolateral peripheral sclerite apical portion, with fine and scattered villi. Frontolateral peripheral sclerite basoventral apophysis well developed; two medioventral carinae present; right lateral fold produced into a rather large everted and open apically conical process with irregular apical edge; left lateral lobe membranous, slightly developed; subapicodorsal lobe membranous not reaching anterior edge, apex set on left side in dorsal view; apical lobe tapering into a point and directed obliquely on left side, apical villi regular in shape; subapicoventral lobe acute and in line with apical lobe apically.

Variation. Measurements (86 ♂♂, 69 ♀♀). Length: male 6.5–11.5 mm (10.1 ± 1.0 mm), female 7.0–11.0 mm (9.6 ± 0.9 mm). Female allotype. Cephalic outline in dorsal view as in Fig. 81View FIGURES 79 – 86; vertex with a straight, transverse carina, dorsal edge broadly arcuate in frontal view, lateral portion gradually sloping down; anterior pronotal tubercles atrophied, external lateral edges parallel sided, anterolateral surface simply convex, anterosuperior edge slightly arcuate in dorsal view (Fig. 107), lateral portions of anterosuperior edge slightly upturned (Fig. 108). Protibia short, with external teeth more robust.

Primary type data. Holotype ♂ (MNHN): [C. FR. Des SOMALIES / Obock] handwritten; [MUSÉUM PARIS / 1918 / Dr. Yousseaume] partly handwritten on blue card; [WORLD / SCARAB. / DATABASE / WSD00029901]; [HOLOTYPE ♂ / Digitonthophagus  / aksumensis  n.sp. / des. F. Génier, 2016] red card.

MAP 12. Distribution of Digitonthophagus aksumensis  .

Material examined (92 ♂♂, 74 ♀♀), distribution (Map 12): DJIBOUTI  : ARTA, Grand Bara (11°16'N, 42°39'E), 22.xii.1989, [anonymous]GoogleMaps  —1 ♂ (paratype) (CMD); Grand Bara (11°16'N, 42°39'E), 24.v.1991, G. Nazaret— 4 ♀♀, 2 ♂♂ (6 paratypes) (CMD); DJIBOUTI, Ambouli (11°33'13''N, 43°9'31''E)GoogleMaps  , v.1990, G. Nazaret— 3 ♀♀, 3 ♂♂ (6 paratypes) (CMD); Ambouli (11°33'13''N, 43°9'31''E)GoogleMaps  , 9.xi.1972, Mission Balachowsky-Menier— 1 ♀, 3 ♂♂ (4 paratypes) (MNHN); Ambouli (11°33'13''N, 43°9'31''E), 15.ii.1990, G. Nazaret— 4 ♀♀, 4 ♂♂ (8 paratypes) ( PMOC)GoogleMaps  ; Ambouli (11°33'13''N, 43°9'31''E)GoogleMaps  , 21.ii.1990, G. Nazaret— 2 ♀♀, 2 ♂♂ (4 paratypes) (CMD); Ambouli (11°33'13''N, 43°9'31''E)GoogleMaps  , 12.i.1992, G. Nazaret— 2 ♂♂ (2 paratypes) (CMD); Ambouli (11°33'13''N, 43°9'31''E)GoogleMaps  , 12.i.1992, [anonymous]—1 ♂ (paratype) (PCSR); Djibouti (11°35'N, 43°9'E), vii.1897, Jousseaume— 6 ♀♀, 7 ♂♂ (13 paratypes) ( MNHNAbout MNHN)GoogleMaps  ; Djibouti (11°35'N, 43°9'E), 1897, H. Coutière— 2 ♀♀, 1 ♂ (paratypes) ( MNHNAbout MNHN)GoogleMaps  ; Djibouti (11°35'N, 43°9'E), [no date], [anonymous]— 2 ♀♀, 1 ♂ (paratypes) ( MNHNAbout MNHN)GoogleMaps  ; OBOCK, Obock (11°58'N, 43°17'E), 1918, Dr. Yousseaume— 3 ♀♀, 4 ♂♂ (holotype, allotype, 5 paratypes) ( MNHNAbout MNHN)GoogleMaps  ; Obock (11°58'N, 43°17'E), [no date], Faurot— 1 ♀ (paratype) ( MNHNAbout MNHN)GoogleMaps  ; Obock (11°58'N, 43°17'E), 1893, Maindron— 1 ♀, 1 ♂ (paratypes) ( MNHNAbout MNHN)GoogleMaps  ; ERITREA: SEMENAWI-KEYIH-BAHRI, Massawa (15°36'35''N, 39°27'0''E), [no date], [anonymous]— 1 ♂ (paratype) ( BMNH)GoogleMaps  ; ETHIOPIA: DIRE DAWA, Dire Dawa (9°36'N, 41°51'E)GoogleMaps  , ix.1935, H. Ulenhuth— 1 ♀, 2 ♂♂ (3 paratypes) ( BMNH); Dire Dawa (9°36'N, 41°51'E), 1936, [anonymous]GoogleMaps  1 ♀, 1 ♂ (paratypes) ( MNHNAbout MNHN); Dire Dawa (9°36'N, 41°51'E), 1935, [anonymous]GoogleMaps  1 ♀ (paratype) ( MNHNAbout MNHN); OROMIA, 23 km NEE Welenchiti (8°46'N, 39°36'E), 29.iv.2013, [anonymous]GoogleMaps  1 ♂ (paratype) (CMD); 30 km SW Awash (8°54'N, 39°56'E)GoogleMaps  , 29–30.iv.2013, I. Martinu—1 ♂ (paratype) (JFJC); SOMALI, Adigala (10°25'35''N, 42°14'25''E), [no date], Dr. Martin— 2 ♂♂ (2 paratypes) ( MNHNAbout MNHN)GoogleMaps  ; Dewele (11°2'5''N, 42°37'53''E), [no date], Dr. Martin— 1 ♂ (paratype) ( MNHNAbout MNHN)GoogleMaps  ; Lassarat (10°39'52''N, 42°27'21''E), [no date], Dr. Martin— 2 ♀♀, 7 ♂♂ (9 paratypes) ( MNHNAbout MNHN)GoogleMaps  ; SAUDI ARABIA: Hedjaz (24°30'N, 38°30'E), [no date], [anonymous]— 1 ♀, 2 ♂♂ (3 paratypes) ( MNHNAbout MNHN); [unspecified locality], [no date], [anonymous]GoogleMaps  —1 ♀, 1 ♂ (paratypes) (MNHN); ASEER, 35 km N Mahayl [=Muhayil] (18°50'N, 41°58'E)GoogleMaps  , 7.xi.1982, A.R. Pittaway— 1 ♂ (paratype) ( OUMNH); Muhayl [=Muhayil] (18°32'40''N, 42°3'3''E)GoogleMaps  , 8.i.1983, A.R. Pittaway— 1 ♀, 1 ♂ (paratypes) ( OUMNH)  ; MAKKAH, Lith , 10 mi. inland (20°9'N, 40°16'E), i.1945, B.P. Uvarov— 1 ♂ (paratype) ( BMNH)GoogleMaps  ; Wadi Jizan (21°37'N, 39°10'E), 18.iii.1978, Filipponi— 1 ♂ (paratype) ( FETC)GoogleMaps  ; Wadi Jizan (21°37'N, 39°10'E), 26.iii.1978, Filipponi— 1 ♀, 1 ♂ (paratypes) ( FETC)GoogleMaps  ; Wadi Jizan (21°37'N, 39°10'E), 6.viii.1978, Filipponi— 1 ♂ (paratype) ( FETC)GoogleMaps  ; Wadi Jizan (21°37'N, 39°10'E), 11.viii.1978, Filipponi— 2 ♀♀, 6 ♂♂ (8 paratypes) ( FETC)GoogleMaps  ; Wadi Jizan (21°37'N, 39°10'E), 14.viii.1978, Filipponi— 7 ♀♀, 7 ♂♂ (14 paratypes) ( FETC)GoogleMaps  ; Wadi Jizan (21°37'N, 39°10'E), 18.viii.1978, Filipponi— 7 ♀♀, 2 ♂♂ (9 paratypes) ( FETC)GoogleMaps  ; Wadi Jizan (21°37'N, 39°10'E), 24.viii.1978, Filipponi— 1 ♂ (paratype) ( FETC)GoogleMaps  ; Wadi Jizan (21°37'N, 39°10'E), 30.xi.1978, Filipponi— 1 ♀, 2 ♂♂ (3 paratypes) ( FETC)GoogleMaps  ; MINTAQAT MAKKAH, 12 mi. N Jidda [=Jeddah] (21°38'15''N, 39°13'35''E)GoogleMaps  , 4.xii.1944, A.R. Waterston— 1 ♂ (paratype) ( BMNH)  ; SOMALIA: Dolphin Bay, 22.iii.1903, M. Cameron— 2 ♀♀, 1 ♂ (paratypes) ( BMNH)  ; SUDAN: KHARTOUM, Environs de Khartoum (15°35'N, 32°32'E), [no date], [anonymous]— 2 ♀♀, 1 ♂ (paratypes) ( MNHNAbout MNHN)GoogleMaps  ; Khartoum (15°35'N, 32°32'E), 18.i.1904, Zaphiro— 1 ♀, 1 ♂ (paratypes) ( BMNH)GoogleMaps  ; RED SEA, Khor Arbaat Delta (20°1'N, 37°8'E)GoogleMaps  , iv–v.1926, H.B. Johnston—1 ♂ (paratype) (BMNH); Tokar (18°26'N, 37°44'E), 1914, H.W. Bedford— 1 ♂ (paratype) ( BMNH)GoogleMaps  ; YEMEN: [unspecified locality] (14°14'N, 44°29'E), [no date], Mellingen— 3 ♀♀, 2 ♂♂ (5 paratypes) ( BMNH)GoogleMaps  ; [unspecified locality] (14°14'N, 44°29'E), [no date], [anonymous]—2 ♀♀, 1 ♂ (paratypes) (MNHN); ADEN, Aden (12°45'56''N, 45°1'1''E), [no date], [anonymous]GoogleMaps  —2 ♀♀, 1 ♂ (paratypes) (BMNH); Aden (12°45'56''N, 45°1'1''E), [no date], C. Pérez— 4 ♀♀, 4 ♂♂ (8 paratypes) ( MNHNAbout MNHN)GoogleMaps  ; AL HUDAYDAH, Kamaran Island (15°20'N, 42°35'E), 24.xii.1902, M. Cameron— 1 ♀, 1 ♂ (paratypes) ( BMNH)GoogleMaps  ; Lahij, Lahij (13°3'N, 44°53'E), [no date], Dodson— 2 ♀♀, 1 ♂ (paratypes) ( MNHNAbout MNHN)GoogleMaps  ; TA’IZZ, Taizz (13°34'N, 44°2'E), xi.1975, N. Hadi— 1 ♂ (paratype) ( BMNH)GoogleMaps  .

Etymology. Derived from Aksum, a historical kingdom approximately corresponding to the distribution of the species.

Natural history. Unknown except for two specimens collected from camel dung and five specimens collected at light.

Remarks. The Egyptian records for D. gazella  from Quena in the Nil Valley ( Alfieri 1976) presumably refer to this species.

MNHN

Museum National d'Histoire Naturelle