Digitonthophagus lusinganus (d’Orbigny, 1905)

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: 65-67

publication ID

10.5281/zenodo.439444

publication LSID

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

persistent identifier

http://treatment.plazi.org/id/3D5987B7-073F-FFD0-FF17-A1BE0564FF1F

treatment provided by

Plazi

scientific name

Digitonthophagus lusinganus (d’Orbigny, 1905)
status

 

Digitonthophagus lusinganus (d’Orbigny, 1905) 

( Figs. 20 View Figure , 49–50 View Figure , 68 View Figure , 84 View Figure , 113–114, 132, 174–176; Map 15)

Onthophagus (O.) gazella var. lusinganus d’Orbigny, 1905: 495  (original description) Onthophagus (O.) gazella var. lusinganus  — d’Orbigny 1913b: 249 (monograph)

Onthophagus (O.) gazella race lusinganus  — Kolbe 1914: 297 (distribution)

Onthophagus gazella var. lusinganus  — Gillet & Boucomont 1927: 138 (mentioned as synonym) Onthophagus lusinganus  — Müller 1942: 96 (new combination, distribution)

Onthophagus (Digitonthophagus) gazella var. lusinganus  — Balthasar 1963: 365 (mentioned as synonym) Onthophagus (O.) lusinganus  — Ferreira 1972: 680 (catalog)

Onthophagus (Digitonthophagus) lusinganus  — Kim & Lumaret, 1989: 336 (description of larvae)

Type locality. Ile de Lusinga (Victoria-Nyanza N. -E.), Afrique Orientale Anglaise [ Kenya]. 

Diagnosis. Male cephalic horns lacking granules internally at apex ( Fig. 50 View Figure ); males with pronotal anterior angles surface distinctly concave, simply round anteriorly ( Fig. 49 View Figure ); pronotal surface with dense, small punctures throughout ( Fig. 70 View Figure ); FLP sclerite ventral portion with a single carinae ( Fig. 176 View Figure ); SA sclerite apex interrupted much before apex of apical portion of FLP sclerite ( Figs. 174–175 View Figure ).

Description. Lectotype ♂ ( Fig. 20 View Figure ). Measurements. Length 13.5 mm, width 8.0 mm. Head ( Figs. 49–50 View Figure ). Anterior clypeal edge straight on median fifth in dorsal view; clypeofrontal carina broadly arcuate and interrupted at gena; vertex lacking median tubercle, surface with fine and minute punctures; fine punctures separated by one to three diameters. Horns rather long, arcuate, divergent in frontal view, gradually tapering from base to apex; posterointernal edge with a low, angular projection; apicointernal surface lacking granules. Punctures slightly scabrous; genal edge strongly upturned and distinctly angulate on anterior third, forming a broad angle with clypeal edge. Pronotum ( Fig. 68 View Figure ). Surface with large, weakly-defined, strongly granulate punctures restricted to anterior half medially, with smaller scattered scabrous punctures on posterior half of disc; punctures weaker but distinct posterolaterally, with dense small punctures throughout; anteromedian tubercle well developed, produced into a small, transverse, sharp ridge on each side of midline, median longitudinal sulcus deep; surface behind the eyes slightly concave, surface of anterior angles concave, anterior angles unmodified; anterior half of lateral edge arcuate in dorsal and lateral view; posterior angles simply arcuate in dorsal view. Anterior hypomeral ridge arcuate throughout, anterior hypomeral depression surface slightly darker in color medially. Elytra ( Fig. 20 View Figure ). Intervals 2 and 4 lacking fine granules from base to apical declivity. Legs. Protibial apicointernal tooth enlarged, with dorsal ridge extending to apex. Aedeagus ( Fig. 132 View Figure ). Parameres with dorsal and ventral edges diverging toward apex in lateral view. Internal sac sclerites ( Figs. 174–176 View Figure ). Axial sclerite weekly sclerotized, short, semicircular. Subaxial sclerite wide basally and abruptly narrowed at mid distance, apical half short, extending straight, interrupted before apex of frontolateral peripheral sclerite apical portion, with villi on apical half. Frontolateral peripheral sclerite basoventral apophysis well developed, forming an acute angle in lateral view; with a more-or-less rectangular medioventral carina; right lateral fold produced into a spoon-like process apically; left lateral lobe moderately sclerotized and well developed; subapicodorsal lobe membranous, small, extending in line with apex of right lateral fold, apex set on left side in dorsal view; right preapical edge entire; apex of apical lobe round apically, directed obliquely on left side, apical villi regular in shape, ventral portion with a small additional lobate projection above subapicoventral lobe; subapicoventral lobe rather small, round and interrupted before apex of apical lobe.

Variation. Measurements (64 ♂♂, 73 ♀♀). Length: male 9.5–15.0 mm (12.6 ± 1.2 mm), female 9.0–14.0 mm (12.1 ± 1.1 mm). Female paralectotype. Cephalic outline in dorsal view as in Fig. 84 View Figure ; vertex with a broadly arcuate, transverse carina, dorsal edge broadly arcuate in frontal view, lateral low and portion shortly gradually sloping down posteriorly; anterior pronotal tubercles well developed, external lateral edges rather short and slightly widening toward apex in dorsal view, anterolateral surface slightly obliquely concave, anterosuperior edge slightly arcuate in dorsal view (Fig. 113), lateral portion of anterosuperior edge slightly upturned (Fig. 114). Protibia short, with external teeth more robust.

Primary type data. Lectotype ♂ (MNHN) present designation: [AFRIQUE OR le ANGLAISE / Ile de LUSINGA / (VICTORIA-NYANZA N.-E) / CH. ALLUAUD X. 1903]; [MUSEUM PARIS / Coll. H. d’ ORBIGNY / 1913] blue card; [WORLD / SCARAB. / DATABASE / WSD00030000] barcode label; [ gazella Fabr.  / v. lusinganus  / var. nov  . d’Orb.] handwritten on card; [LECTOTYPE ♂ / Onthophagus  / gazella v. lusinganus  / d’Orbigny, 1905 / dés. F. Génier, 2016] red card; [ Digitonthophagus  / lusinganus  ♂ / (d’Orbigny, 1905) / dét. F. Génier, 2016].

MAP 15. Distribution of Digitonthophagus lusinganus  .

Material examined (91 ♂♂, 116 ♀♀), distribution (Map 15): ETHIOPIA: SOUTHERN NATIONS  , NATIONALITIES, AND PEOPLE’S REGION, Arba Minch (6°2'N, 37°33'E), iv.1993, Werner— 1 ♂ ( PMOC)GoogleMaps  ; Arba Minch (6°2'N, 37°33'E), 6.ii.1978, P.-C. Rougeot— 1 ♀ ( MNHNAbout MNHN)GoogleMaps  ; Arba Minch (6°2'N, 37°33'E), 6.ii.1978, P.-C. Rougeot— 1 ♀ ( MNHNAbout MNHN)GoogleMaps  ; Arba Minch (6°2'N, 37°33'E), 11–17.ix.2000, P. Léonard— 19 ♀♀, 12 ♂♂ ( FGICAbout FGIC, PMOC)GoogleMaps  ; Lac Awassa (7°2'N, 38°28'E), 10.xi.1973, P.C. Rougeot— 1 ♀ ( MNHNAbout MNHN)GoogleMaps  ; Nanoropus , bord du Rodolphe, 565 m (4°51'N, 36°5'E), 1932–1933, C. Arambour, P.- A. Chapuis, & R. Jeannel— 6 ♀♀, 6 ♂♂ ( FGICAbout FGIC, MNHNAbout MNHN)GoogleMaps  ; Soddu [= Sodo ] (6°51'N, 37°45'30''E), 20.vii.1971, [anonymous]— 1 ♂ ( FETC)GoogleMaps  ; KENYA: Tsavo National Park [=Tsavo East National Park] (2°45'S, 38°49'E), 14.xi.1972, T.J. Kingston— 1 ♀, 1 ♂ ( OUMNH)GoogleMaps  ; Tsavo National Park [=Tsavo East National Park] (2°45'S, 38°49'E), 18.x.1973, T.J. Kingston— 8 ♀♀, 4 ♂♂ ( OUMNH)GoogleMaps  ; Tsavo National Park [=Tsavo East National Park] (2°45'S, 38°49'E), 21.xi.1973, T.J. Kingston— 4 ♀♀ ( OUMNH)GoogleMaps  ; Tsavo National Park [=Tsavo East National Park] (2°45'S, 38°49'E), 29.xi.1973, T.J. Kingston— 1 ♂ ( OUMNH)GoogleMaps  ; HOMA BAY, Baie de Kavirondo  , Lac Victoria (0°31'S, 34°29'E), ix–x.1903, C. Alluaud— 1 ♂ ( MNHNAbout MNHN)GoogleMaps  ; Ile de Lusinga [= Rusinga ], Victoria-Nyanza N. -E. (0°24'S, 34°11'E), x.1903, C. Alluaud— 12 ♀♀, 11 ♂♂ (lectotype, 22 paralectotypes) ( IRSNBAbout IRSNB, MNHNAbout MNHN)GoogleMaps  ; ISIOLO, Isiola Samburni (0°21'23''N, 37°34'56''E), 18.xi.1975, HGoogleMaps  . A.— 1 ♀ ( BMNH)  ; Meru National Park  , Tana River near Post 96, 275 m (0°10'N, 38°18'E), 13.xi.1975, C.F. Dewhurst— 1 ♂ ( BMNH)GoogleMaps  ; KISUMU, 3 km SE Kisumu, 1120 m (0°9'S, 34°51'E), 17.iv.1975, Davis & Dewhurst— 1 ♀ ( MNHNAbout MNHN)GoogleMaps  ; 6 km S Ahero , 1200 m (0°13'16''S, 34°57'24''E), 22.xi.1975, C.F. Dewhurst— 1 ♂ ( MNHNAbout MNHN)GoogleMaps  ; Kisumu (0°6'S, 34°46'E), [no date], P.S. Corbet— 1 ♀ ( BMNH)GoogleMaps  ; MAKUENI, Kibwezi (2°24'38''S, 37°58'4''E), 20.xi.1989, P. Smerz— 1 ♂ ( JFJC)GoogleMaps  ; MERU, Leopard Rock Swamp - Post 12–33  , Meru National Park, 600 m (0°12'N, 38°14'E), 14.xi.1975, C.F. Dewhurst— 1 ♂ ( MNHNAbout MNHN)GoogleMaps  ; NAROK, Massai Mara National Reserve (1°29'S, 35°7'E), ii.1994, Czeppel— 1 ♂ ( FETC)GoogleMaps  ; Massai Mara National Reserve (1°29'S, 35°7'E), iii.1995, Cursi— 1 ♂ ( FETC)GoogleMaps  ; RIFT VALLEY, Amboseli National Park (2°38'S, 37°14'E), 22.i.1986, R. Minetti— 2 ♀♀, 1 ♂ ( PMOC); Headquarters area GoogleMaps  , Lake Amboseli basin, Amboseli National Park , 1050 m (2°39'14''S, 37°15'22''E), 5.v.1975, Davies & Dewhurst— 1 ♀ ( BMNH)GoogleMaps  ; Talek River , Massai Mara, 1300 m (1°26'S, 35°10'E), xii.1997, P. Bleuzen— 1 ♀, 1 ♂ ( JFJC)GoogleMaps  ; SAMBURU, approximately 35 km N Wamba, Mattews Range, Rift Valley , 1300–1400 m (1°10.707'N, 37°18.962'E), 7–12.xii.2002, C. Hauser, D. Bartsch, & A. Zahm— 1 ♂ ( SMNSAbout SMNS)GoogleMaps  ; TAITA TAVETA, Entrance Gate Tsavo National Park, Voi (3°21'47''S, 38°35'46''E), 26.xii.1990, B.D. Gill— 1 ♀ ( BDGC)GoogleMaps  ; Sagala Hills (3°29'S, 38°35'E), xii.1993, Werner— 1 ♀ (CMD)GoogleMaps  ; Taita (3°22'S, 38°22'E), [no date], [anonymous]— 2 ♀♀, 1 ♂ ( BMNH)GoogleMaps  ; Taveta (3°24'S, 37°41'E), i–iv.1904, C. Alluaud— 1 ♂ ( MNHNAbout MNHN)GoogleMaps  ; Taveta (3°24'S, 37°41'E), iii.1912, Alluaud & Jeannel (St. 65)— 1 ♂ ( MNHNAbout MNHN)GoogleMaps  ; Tsavo , 60 km N Voi (2°59'42''S, 38°27'41''E), 25.xii.1990, B.D. Gill— 2 ♂♂ ( BDGC)GoogleMaps  ; Voi (3°23'S, 38°34'E), xi.1997, M. Snižek— 1 ♂ ( CEMT)GoogleMaps  ; Voi (3°23'S, 38°34'E), vi/1997, O. Bužga— 1 ♂ ( PMOC)GoogleMaps  ; Voi (3°23'S, 38°34'E), 10.xii.1999, P. Smerz— 1 ♀ ( JFJC)GoogleMaps  ; Voi , Tsavo East National Park (3°23'S, 38°34'E), 31.xii.1990, B.D. Gill— 20 ♀♀, 12 ♂♂ ( BDGC)GoogleMaps  ; SOMALIA: JUBBADA HOOSE, Kismaayo, Mareri (0°21'37''S, 42°32'56''E), 29.x.1986, M. J.W. Cock— 1 ♀, 1 ♂ ( BMNH)GoogleMaps  ; SHABEELLAHA HOOSE, Genale (1°48'N, 44°42'0''E), v.1935, F. Bigi— 1 ♀ ( FETC)GoogleMaps  ; Genale (1°48'N, 44°42'0''E), [no date], [anonymous]— 1 ♀ ( NMPCAbout NMPC)GoogleMaps  ; SOUTH SUDAN: UPPER NILE, Malakal (9°32'N, 31°39'E), 30.xi.1960, B. Hocking— 1 ♀ ( BMNH)GoogleMaps  ; SUDAN: KHARTOUM, Kawa , 157 mi. S Khartoum (13°45'N, 32°30'E), 2–3.xii.1961, J.L. Cloudsley- Thompson— 2 ♀♀, 1 ♂ ( BMNH)GoogleMaps  ; SENNAR, [unspecified locality], 1906, C. Alluaud—2 ♀♀, 2 ♂♂ (IRSNB); WHITE NIL, El Jebelain (12°35'N, 32°50'E), 3–4.xii.1961, J.L. Cloudsley-Thompson— 1 ♀ ( BMNH)GoogleMaps  ; TANZANIA: ARUSHA  , Arusha environs (3°22'S, 36°41'E), 3–4.iv.1997, M. Kuboň— 5 ♀♀, 1 ♂ ( PMOC)GoogleMaps  ; Orekeryan, Mount Longido (2°43'47''S, 36°43'26''E), 8.xi.2011, R. Smith & H. Takano— 1 ♂ ( BMNH)GoogleMaps  ; DODOMA, 40 km N Dodoma, 1100 m (5°54'S, 35°45'E), 15.xii.2007, F. Kantner— 1 ♂ ( SMNSAbout SMNS)GoogleMaps  ; Babati-Dodoma (5°15'S, 35°52'E), 6.xii.1997, Werner & Lizler— 1 ♂ (CMD)GoogleMaps  ; KILIMANDJARO, Ibaya Camp, Mkomazi Game Reserve (4°5'11''S, 38°4'55''E), 13.iv.1995, J.G. Davies— 1 ♀ ( BMNH)GoogleMaps  ; Ibaya Camp, Mkomazi Game Reserve (4°5'11''S, 38°4'55''E), 29.iii.1996, G.C. McGavin— 1 ♂ ( OUMNH)GoogleMaps  ; Same (4°4'S, 37°45'E), 12–17.v.1999, O. Bužga— 3 ♂♂ ( PMOC)GoogleMaps  ; MANYARA, Kibaone , 1348 m (3°20'11''S, 35°46'36''E), 8–10.v.2012, R. Smith & H. Takano— 1 ♂ ( BMNH)GoogleMaps  ; Mto Wa MBu  , Lake Manyara National Park, 963 m (3°23'12''S, 35°52'36''E), 21.xi.2011, R. Smith & H. Takano— 14 ♀♀, 11 ♂♂ ( BMNH)GoogleMaps  ; MARA, Seronera Wildlife Lodge (2°26'50''S, 34°48'24''E), 14– 17.ii.1989, G. Bassi & Scaramozzino— 1 ♂ ( CMNC)GoogleMaps  ; MOROGO, Monts Uluguru (7°14'S, 37°33'E), 20.xi.2005, Local collectors— 1 ♀ ( PMOC); SHINYANGAGoogleMaps  , Lake Ndutu area, Serengeti National Park (2°59'S, 35°1'E), 20.i.1991, R. Foster— 1 ♀ ( OUMNH)GoogleMaps  .

Natural history. No habitat data, some specimens collected in buffalo and elephant dung. This species is attracted to mercury vapor and ultraviolet light traps.

Nomenclature and taxonomy. Digitonthophagus lusinganus  was first described as a variety of Onthophagus gazella  by d’Orbigny (1905). In a note on the Coleoptera  of Benadir (Somalia) Müller (1942) concluded that the coexistence of two forms of “ O. gazella  ” and the “ O. gazella  form lusinganus  ” in several East African localities was not possible and considered this form as a good species. We concur with Müller (1942) and Ferreira (1972) that this revised status is correct. The original syntype series comprises 23 specimens deposited in the Muséum national d’Histoire naturelle (Paris) and Royal Belgian Institute of Natural Sciences (Brussels). In order to stabilize nomenclature a male specimen possessing the best diagnostic characters is selected as lectotype, (present designation). This lectotype is designated in order to choose a single specimen as name bearing type in the event that the other specimens of the syntype series could belong to a different cryptic species in this genus.

MNHN

Museum National d'Histoire Naturelle

FGIC

Francois Genier

IRSNB

Institut Royal des Sciences Naturelles de Belgique

SMNS

Staatliches Museum fuer Naturkund Stuttgart

NMPC

National Museum Prague

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Scarabaeidae

Genus

Digitonthophagus

Loc

Digitonthophagus lusinganus (d’Orbigny, 1905)

Génier, François & Moretto, Philippe 2017

2017
Loc

Onthophagus (Digitonthophagus) lusinganus

Kim 1989: 336

1989
Loc

Onthophagus (Digitonthophagus) gazella var. lusinganus

Ferreira 1972: 680
Balthasar 1963: 365

1963
Loc

Onthophagus gazella var. lusinganus

Muller 1942: 96
Gillet 1927: 138

1927
Loc

Onthophagus (O.) gazella race lusinganus

Kolbe 1914: 297

1914
Loc

Onthophagus (O.) gazella var. lusinganus d’Orbigny, 1905: 495

d'Orbigny 1913: 249

1913