Atherigona univittata Deeming & Overman, 1987

Muller, B. S., 2015, Illustrated key and systematics of male South African Atherigona s. str. (Diptera: Muscidae), African Invertebrates 56 (3), pp. 845-845 : 903-905

publication ID	https://doi.org/ 10.5733/afin.056.0301
persistent identifier	https://treatment.plazi.org/id/039387FE-FFE7-E023-FEA4-FA44FE47FCAC
treatment provided by	Felipe
scientific name	Atherigona univittata Deeming & Overman, 1987
status

Treatment

Atherigona univittata Deeming & Overman, 1987 View in CoL

Fig. 9 View Figs 1–9

Atherigona univitatta Deeming & Overman, 1987: 118 , figs 1–3.

Diagnosis: This species can be distinguished from most other species with an infuscated frontal vitta by its unusual infuscated ground coloured postpronotal lobe (as noted by Deeming & Overman 1987) in combination with an apically rounded median piece and the lateral lobes appearing almost the same size as the median piece.

Type material examined: Holotype ♂: ‘ KENYA: Kitale , 14.xi.1972, Overman, J.L. ’ ( NHMUK).

Other material examined: SOUTH AFRICA : KwaZuluNatal: 2♂ Ferncliff Nature Reserve , 29°33.2'S 30°20.5'E, 855 m, 5.xii.2004, M.B. Mostovski, light trap ( NMSA); 1♂ Ntsikeni Nature Reserve, Swartberg District, 30°07'S 29°28'E, 1850 m, High altitude grasslands, 24–25.x.2006, G.B.P. Davies ( NMSA) GoogleMaps .

Distribution: Kenya, South Africa.

Atherigona valida ( Adams, 1905)

Fig. 67 View Figs 64–68

Coenosia valida Adams, 1905: 207 View in CoL . Atherigona valida: Deeming 1971: 170 , figs 101, 102; Deeming 1979: 44. Diagnosis: This species can be distinguished from others with an infuscated frontal vitta and yellow palpi by the truncated hypopygial prominence dorsally appearing in the shape of two fused, pointed triangles, slightly projecting. The trifoliate process in entirely infuscated with the median piece apically dilated, without any emarginations. Type material: Type material housed in the University of Kansas, Museum of Natural History (UKMNH), but not seen. Distribution: Burkina Faso, Guinea, Kenya, Mali, Nigeria, South Africa, Uganda, Zimbabwe.

Atherigona vernoni View in CoL sp. n.

Fig. 56 View Figs 55–63

Etymology: Named for the type locality, Vernon Crookes Nature Reserve. KwaZulu-Natal, South Africa. Diagnosis: This species would key to A. robertsi Deeming in Deeming (1971) and Dike (1989 a), but differs from it in having a roundly bifurcated hypopygial prominence compared to a knoblike structure. A. vernoni also has its median piece of the trifoliate process apically dilated, whereas A. robertsi has it filiform in posterior view. Description:

Male. Measurement s: Body length: 2.821 mm; wing: 2.32 mm; rm crossvein ratio: 0.407.

Head: Ground colour brown. All head setae and setulae infuscated. Occiput glossy on upper half, weakly dark grey dusted laterally. Ocellar triangle weakly dark grey dusted, subshinging. Frontal vitta infuscated with slight ferruginous suffusion. Frontal plate for the most part dark grey, very weakly dusted, appearing glossy, with three pairs of proclinate frontal setae (apical pair’s area surrounded by gold dusted surface) and two pairs of orbital setae. Parafacial gold dusted, narrower than aristal base at narrowest. Scape, pedicel and postpedicel infuscated. Arista brown. Palpus yellow, appearing almost straplike.

Thorax: Ground colour dark. Postpronotal lobe golden dusted, with three setae and 8 setulae. Pleura gold dusted, Proepisternum inconspicuous and gold dusted. Scutum appearing brown with slight grey pruinosity, with three dark-brown 2-4 dorsocentral vittae, stopping before scutellum. Scutellum with same coloration as scutum, apically edge yellow; one pair of basal setae, one pair of discal setae and six discal setulae, one pair of subbasal setae and one pair of apical setae (equal in length).

Legs: All legs yellow except for fore basitarsus which appears darker than the rest of tarsi.

Leg chaetotaxy: Fore tarsi with 3rd and 4th segments from base each with long setulae dorsally, each being longer than the three apical tarsal segments combined.

Wings: Hyaline. Veins brown. Knob of halteres white with stalk yellow. Calypters white.

Abdomen: All tergites yellow; tergite 1+2 immaculate; tergite 3 with a pair oblong dark markings taking up two thirds of dorsal surface; tergites 4 and 5 each with a pair of small brown spots taking up a third of dorsal surfaces. Hypopygial prominence roundly bifurcated. Trifoliate process stem 1.7× the length of the apical process; trifoliate light brown to hyaline with the exception of the basal half of stem, extreme apex of median piece, and posterior and lateral edges of lateral plates; median piece apically dilated in posterior view appearing almost triangular, linear in profile with apex curved; lateral plates without inner lobes, appearing wider than median piece in profile. Surstylus lightly infuscated at base and apex.

Female. Unknown.

Holotype ♂: SOUTH AFRICA : KwaZuluNatal: Vernon Crookes Nature Reserve , Mthakati Valley, 30°17'S 30°36'E, ca. 450 m asl, Forest understorey, lush shrubbery and herbage, 16.iii.2008, G.B.P. Davies ( NMSA; Type no. 2514). GoogleMaps

Distribution: South Africa.