Ommatius (Pygommatius) bingeri Oldroyd, 1980

Scarbrough, Aubrey G. & Marascia, Claudio G., 2003, Revision of Ommatius Wiedemann (Diptera: Asilidae). IV. Pygommatius subgen. nov. with twenty-five Afrotropical species, Zootaxa 228 (1), pp. 1-94 : 20-21

Ommatius (Pygommatius) bingeri Oldroyd

Figs. 3 , 52 , 70­77

Ommatius bingeri Oldroyd, 1968 , 165: 390.

Ommatius bingeri: Oldroyd, 1980: 347 (Afrotropical catalogue).

Redescription, male. Black. Length, body 7.0­9.0 mm; wing 4.0­ 6.5 mm. Head: Yellowish­gray to yellow tomentose, mostly yellow to white setose. Face entirely with abundant setae; mystax not especially dense; 2­6 thin, black and 6­7 pencil­like bristles present; FHWR 1.0:4.2­1.0:4.7. Proboscis entirely black. Antenna usually black setose, sparse yellow setae sometimes present ventrally, pedicel ventrally with 1 unusually long, thick seta, apex slightly beyond flagellum. Frons dark brown tomentose, slightly yellowish­brown at some angles; black setose, length as long as 3 antennal segments combined. Ocellar tubercle with most setae as long as 3 antennal segments combined. Most postocular bristles yellow, apex of longest just before to above ocellar tubercle.

Thorax: Mostly gray to yellowish­gray tomentose. Mesonotum brown tomentose dorsally, often as a medium stripe and 1 or 2 lateral spots; setae unusually abundant over entire dorsum, mostly or entirely brown, as long as 3 antennal segments combined; thin dorsocentral bristles and thicker lateral bristles usually yellow, 1 notopleural bristle sometimes black. Scutellum with abundant setae and 2­3 marginal bristles, yellow, setae as long as marginal bristles. Pleuron sparse yellow to white setose, setae most abundant anteriorly. Halter yellow.

Wing ( Fig. 3 ): Entirely microtrichose. Cell r 4 narrow, veins parallel. Cell m 1 with sides evenly diverge to wing margin; M 1 angular basally. Cell m 3 with apex well beyond r­m 1.

Leg: Coxae and trochanter brown; former yellowish­gray tomentose with thin, pale yellow vestiture. Femora and tibiae yellow, often with slight brown tint apically, vestiture usually yellow; fore femur basally with 4 seta­like bristles. Middle femur with only setae ventrally. Hind femur with setae and short anteroventral bristles mixed; 7­8 thinner, longer, posteroventral bristles present; HFWLR 1.0:5.5­1.0:5.9. Tarsi with basal tarsomere yellow, narrow apex sometimes brown; few to several yellow bristles present laterally.

Abdomen: Tergites dorsally mostly brown tomentose with mostly brown setae, wide apical corners and sides yellow to yellowish­gray tomentose with yellow to pale yellow setae; basal 2­3 tergites laterally with abundant, long, thin setae; apical tergites with sparse bristly yellow or black setae in each apical corner. Sternites yellow gray tomentose; sternites 3­5 with several, erect, stout, yellow bristles; sternites 6­8 mostly or entirely with short, black setae except long, thin, black bristles on apical margin of sternite 8.

Terminalia ( Figs. 70­74 ): Epandrium 3 branched; dorsal branch short, arising from dorsal surface of median branch; median branch wide, apex curved dorsally, pointed; ventral branch slightly longer than dorsal process. Gonostylus narrow, angular. Aedeagus with wide, tubular distiphallus, apical surface with minute tubercles. Hypandrium with flat 'beard' of long, black bristles.

Female. Differs from male as follows. Length, body 7.1­7.8; wing 6.9­7.0 mm. Head: Face ventrally with 4 thick, yellow bristles; 1.0:4.8­1.0:5.9. Thorax: Anepimeral seta sometimes brown. Leg: Middle and hind femora sometimes with dark brown or black bristles. Hind femur with 3­5 stout anteroventral bristles; length of 3 posteroventral setae twice greatest breath of the hind femur; 1.0:5.1­1.0:5.2. Hind tibia with 2 apical bristles contrastingly long. Hind tarsus with only brown bristles. Abdomen: Segments 6­8 ( Fig. 52 ) with unusually long, stout, brown bristles. Tergite 9 long dorsomedially, two­thirds to three­fourths as long as laterally. Sternites 3­6 with erect, yellow bristles; sternite 7 black setose. Terminalia ( Figs. 75­77 ): Three spermathecae present, each tubular, swollen preapically, pointed apically; duct preapical and lateral. Sternite 8 medioapically with a deep, rectangular emargination; black setose with thick bristles.

SPECIMENS EXAMINED. CÔTE D'IVORIE: Holotype ♂, Bingerville / x.1963 / J. Decelle ( MARC); 1 ♂ paratype, Bingerville / viii.1962 / J. Decelle ( BMNH). 1 ♂, Abidjan, Riviera nr golf club, scrubland nr edge of Ebrie Lagoon, 05°19'N: 04°00'W 21.iv.1989, JGH Londt ( NMSA). GHANA: 2 ♂, 4 ♀, Volta Lk,1­5­f on block loc, map, 4.xi.70, C. O. Berg ( USNM). GUINEA: 1 ♀, Guinee Francaise , Kouroussa , Museum Paris , 1837, I. Berland; 1 ♀, Museum Paris , Haut­Niger , Et Bénoué , Ward 159­96 ( MNHN). SENEGAL: 4 ♂, 1 ♀, 10 km SE, Diouloulou swept along road in cultivated area, 12.xi.1977, UTM 28 PACK3235 loc 34, Lund Univ Syst Dept., Sweden Gambia Senegal Nov. 1977 Cederholm­Danielsson­Hammarstedt­Hedqvist­Samuelsson ( MZLU); 1 ♂, 1 ♀, MPAK 11 kms S, Ziguinchor swept on grass 8.xi.1977, UTM 28PCJ 6479 Loc 28 ~ Lund Univ Syst Dept., Sweden Gambia Senegal , Nov. 1977 Cederholm­Danielsson­Hammarstedt­ Hedqvist­Samuelsson ( MZLU); 1 ♂, Kandialan , 17.vii.1980, J. Etienne Museum Paris, sur riz ( MNHN); 2 ♀, dans l'herbe, a­s fond.die, Niokolo­Koba , 16, 25.xi.1959, Mission IFAN ( MNHN). SIERRA LEONE: 6 ♂, 5 ♀, on damp grass Lumby Beach , Murry Town ( King Town ), B. M. 1947­141 (1940), C. R. Ribbonds ( BMNH).

Distribution. Captured on grass and herbaceous vegetation near beaches, in cultivated fields, and scrub forests from November to August in West – Central Africa.

Remarks. Ommatius bingeri is similar to O. caligula and O. digittatus but differs in by the combined characters of the terminalia ( Figs. 70­77 ). The male is further distinguished by the long, abundant, setae on the entire mesonotal dorsum.

The holotype male in the MARC and a paratype male in BMNH are in good condition. An additional paratype in MARC was not examined. Also note that the Figures of the side view of the genitalia of O. canicoxa Speiser and O. bingeri in Oldroyd (1968) paper are reversed in that Figure 5 is the genitalia of O. bingeri , not O. canicoxa as indicated.

Figures

FIGURES 1­10. Right wing of male Ommatius (Pygommatius) spp. 1. O. alatipes, sp. n..; 2. O. albatus Martin; 3. O. bingeri Oldroyd; 4. O. brevicornis Curran; 5. O. cingulatus Bromley; 6. O. comosus, sp. n..; 7. O. dasypogon Oldroyd; 8. O. digittatus Oldroyd; 9. O. fluvius sp. n..; 10. O. grossus, sp. n. Abbr. R4 =fourth radial vein, r4 = fourth radial cell, m1= first medial cell, m3=third medial cell, d = discal cell, r­m = radial­medial crossvein.

FIGURES 49­53. Male Ommatius (Pygommatius) spp. 49. O. alatipes, sp. n., hind tarsus; 50. O. dasypogon Oldroyd, apical 3 tarsomeres; 51. O. neglectus Bromley, apical tarsomere; 52. O. bingeri Oldroyd, abdomen, apical segments; 53. O. comosus, sp. n., abdomen segments 3­6 showing a lateral fringe of tergal bristles (Lf), minute setae (Ms), sternal setae (Ss), and sternal bristles (Sb).

FIGURES 70­77. Male terminalia of Ommatius bingeri Oldroyd. 70­72. Lateral, dorsal and ventral views [note, ventral bristles medially incompletely illustrated, exposing the aedeagus]; 73. Gonostylus; 74. Aedeagus, lateral view. Female terminalia. 75. Spermatheca; 76.Genital fork; 77. Sternite 8, ventral view.