Norbanus kitegaensis (Risbec)

Norbanus kitegaensis (Risbec) View in CoL

( Figs 115–124 View FIGURES 115–120 View FIGURES 121–124 )

Habrocytus kitegaensis Risbec, 1957: 173 View in CoL .

Norbanus kitegaensis (Risbec) View in CoL ; Mitroiu, 2011: 72.

Diagnosis. BOTH SEXES. Head and mesosoma black, mostly without metallic reflections ( Figs 115–118 View FIGURES 115–120 , 121– 123 View FIGURES 121–124 ); hind tibia mainly blackish, only extremities yellowish ( Figs 115, 117 View FIGURES 115–120 , 121, 122 View FIGURES 121–124 ). Head without distinct elevation between eye and posterior ocellus ( Figs 118 View FIGURES 115–120 , 123 View FIGURES 121–124 ). Eye height about 1.2–1.4× length of malar space. POL slightly shorter than OOL (fig. 122). Temple about 0.4–0.5× as long as eye. Clypeal margin slightly emarginate ( Fig. 118 View FIGURES 115–120 , 123 View FIGURES 121–124 ). Mesosoma strongly arched dorsally ( Figs 115, 116 View FIGURES 115–120 , 121 View FIGURES 121–124 ), length about 1.1–1.3× width and 1.2– 1.3× height. Scutellum convex, but not globose ( Figs 115, 116 View FIGURES 115–120 , 121 View FIGURES 121–124 ). Propodeum inclined ( Figs 115, 116 View FIGURES 115–120 , 121 View FIGURES 121–124 ); spiracular sulci absent (cf. Fig. 164 View FIGURES 159–166 ). Fore wing length about 2.5× width; speculum very small, not extending beyond distal end of submarginal vein ( Fig. 120 View FIGURES 115–120 ).

FEMALE. Metasoma black ( Fig. 116, 117 View FIGURES 115–120 ); flagellum except tip of clava uniformly dark brown ( Fig. 119 View FIGURES 115–120 ). Body length 6–7 mm. Antenna filiform, clava not wider than distal funicular segments, spicula short ( Fig. 119 View FIGURES 115–120 ); scape reaching or almost reaching level of vertex ( Fig. 118 View FIGURES 115–120 ); second anellus transverse ( Fig. 119 View FIGURES 115–120 ). Fore wing disc densely pilose ( Fig. 120 View FIGURES 115–120 ). Metasoma slightly longer than head plus mesosoma, length about twice width ( Fig. 116, 117 View FIGURES 115–120 ). Posterior margin of gt1 slightly sinuous ( Fig. 117 View FIGURES 115–120 ).

MALE. Scape usually black, not or slightly exceeding level of vertex ( Fig. 123 View FIGURES 121–124 ); funicular segments not widened both proximally and distally, long and thin, uniformly covered by short dense setae, and separated from each other by very short tubular connections ( Fig. 124 View FIGURES 121–124 ); pedicel plus flagellum about 1.6–1.9× head width; proximal funicular segments usually distinctly widened distally ( Figs 122, 124 View FIGURES 121–124 ).

Material examined. Lectotype ♀, here designated ( MRAC). BURUNDI: “ Holotypus ”, “ Coll. Mus. Congo, Urundi: Kitega 1600–1700m., 3/ 4-III-1953, P. Basilewsky ”, “Type”, “ Habrocytus kitegaensis Risb., J. Risbec det. 195” [head and mesosoma on micropin, metasoma glued aside].

Paralectotypes. BURUNDI: 1 ♂, “ Allotypus ”, “ Coll. Mus. Congo, Urundi: Kitega 1600–1700m., 3/ 4-III-1953, P. Basilewsky ”, “Type”, “ ♂ ”, “R. det. 7286 G.” ( MRAC) ; BURUNDI: 1 ♂, “ Paratypus ”, same information as previous specimen ( MRAC) ; RWANDA: 1 ♂, “ Paratypus ”, “ Coll. Mus. Congo, Ruanda: Kayove, 2000m. terr. Kisenyi, P. Basilewsky 14/II-53”, “R. det. 7286 H.” ( MRAC) .

Other specimens. SOUTH AFRICA: 1 ♀ “SOUTH AFRICA, Hluhluwe Game Res. Ntl, ii. 1990, B. Grobbelaar ”, “NATIONAL COLL. OF INSECTS ( SANC), Pretoria, South Africa ” ( SANC) ; 1 ♂ “SOUTH AFRICA, Lake Kosi, Ntl. i. 1978, G.L. Prinsloo ”, “NATIONAL COLL OF INSECTS ( SANC), Pretoria , South Africa ” ( SANC) ; 1 ♂ “S. Africa R.E. Turner. Brit. Mus. 1924-177.”, “Port St. John, Pondoland, 1–17.Mar.1924 ” ( BMNH) . ZIMBABWE: 1 ♀ “RHODESIA, Salisbury, A. Watsham / WF.138, (iii)75” ( BMNH) . ZAMBIA: 1 ♀ and 4 ♂ “ZAMBIA: 15 km E. Lusaka, 30.xii.79–1.i.80, Mal. tr. in orchard, R.A. Beaver ” ( BMNH) ; 1 ♀ and 1 ♂ “ZAMBIA: 15 km E. Lusaka, 30.xii.79–1.i.80, Mal. tr. in orchard, R.A. Beaver ” ( MICO) .

Redescription. FEMALE. Colour. Head, mesosoma and metasoma black, mostly without metallic reflections ( Figs 115–118 View FIGURES 115–120 ). Body pilosity short whitish ( Figs 117, 118 View FIGURES 115–120 ). Eyes dark brown, ocelli light brown ( Figs 117, 118 View FIGURES 115–120 ). Mandibles reddish-brown, teeth dark brown ( Fig. 118 View FIGURES 115–120 ). Antenna ( Fig. 119 View FIGURES 115–120 ) with scape except base, pedicel and flagellum dark brown, base of scape yellowish; clava becoming gradually lighter from base to tip, the latter light brown to yellow, more extensively so on ventral surface. Wings hyaline, tegulae, venation and pilosity brown ( Fig. 120 View FIGURES 115–120 ). Legs ( Figs 115, 117 View FIGURES 115–120 ) with coxae black; trochanters brown; femora black except brownish extremities; fore tibia dark brown with yellow knee and narrow yellow strip on kickface; mid and hind tibiae brownish-black with yellow extremities; fore tarsus light brown, mid and hind tarsi yellow, gradually becoming light brown (whole last segment light brown); arolia and claws dark brown.

Body length. 6–7 mm.

Head without distinct elevation between eye and posterior ocellus, reticulate except lower face extensively and finely striated, striation almost reaching toruli ( Fig. 118 View FIGURES 115–120 ). Head width 2.0–2.1× length and about 1.3× height. Clypeal margin shallowly emarginate ( Fig. 118 View FIGURES 115–120 ). Eye ovate, anterior and posterior margins not sinuous ( Figs 115, 116 View FIGURES 115–120 ), height about 1.3–1.4× length. Gena with a weak lamina near mouth corner. Malar space about 0.7–0.8× eye height. POL about 0.8–0.9× as long as OOL. Temple about 0.4–0.5× as long as eye in dorsal view. Scrobes well defined, clearly visible both in dorsal and frontal view of the head. Toruli with lower margins above lower margins of eyes ( Fig. 118 View FIGURES 115–120 ). Antenna ( Fig. 119 View FIGURES 115–120 ) with scape virtually as long as eye height, reaching or almost reaching level of vertex ( Fig. 118 View FIGURES 115–120 ); pedicel length about 1.6× width; length of pedicel plus flagellum about 1.2× head width; both anelli transverse, about equal in length; funicular segments longer than wide; fu1 length about 3.6–3.8× width; fu6 length about twice width; clava not wider than fu6, length about 3.2–3.6× width, gradually narrowing before spicula, sutures hardly visible, oblique; micropilosity area occupying about half length of claval body; spicula short, almost indistinct; sensilla and limits of funicular segments difficult to see among the dense short pilosity.

Mesosoma short and strongly arched ( Figs 115, 116 View FIGURES 115–120 ), length about 1.1–1.3× width and 1.2–1.3× height, dorsally coarsely reticulate, hence surface appearing dull ( Fig. 117 View FIGURES 115–120 ). Mesoscutum width about 1.8× length. Notauli hardly visible, traceable slightly beyond middle of mesoscutum ( Fig. 117 View FIGURES 115–120 ). Scutellum convex but not globose ( Figs 115, 116 View FIGURES 115–120 ), frenal line absent, but frenal area with finer reticulation than rest of scutellum. Upper mesepimeron smooth (cf. Fig. 121 View FIGURES 121–124 ). Metapleuron and dorsellum uniformly reticulate. Propodeum inclined ( Figs 115, 116 View FIGURES 115–120 ), length about 0.6× scutellum length, uniformly reticulate except two small depressions near its anterior margin submedially; spiracles oval, spiracular sulci absent (cf. Fig. 164 View FIGURES 159–166 ). Fore wing ( Fig. 120 View FIGURES 115–120 ) length about 2.5× width, with basal cell and basal fold glabrous; costal cell with several rows of pilosity on ventral surface; speculum very small, extending at most behind parastigma; disc covered with short and dense pilosity, area between stigmal vein and postmarginal vein pilose; marginal vein about 1.7–2.1× as long as stigmal vein, from as long as to slightly longer than postmarginal vein; stigma hardly capitate; wing pilosity including marginal fringe short.

Metasoma acuminate ( Figs 116, 117 View FIGURES 115–120 ), length about 1.9–2.0× width, very slightly longer than head plus mesosoma, dorsally mostly reticulate-imbricate (alveolae wider than long) except for gt1 which is mainly smooth (cf. Fig. 19 View FIGURES 19–22 ). Posterior margin of gt1 slightly sinuous ( Fig. 117 View FIGURES 115–120 ). Gt1 length about 0.2× length of metasoma; gt7 about as long as wide. Ovipositor sheaths short, hardly visible in dorsal view ( Fig. 117 View FIGURES 115–120 ).

MALE. Differs from the female holotype mainly as follows. Body length: 4.0– 5.5 mm. Metasoma brown except extensively whitish dorsally and ventrally in proximal 2/3; extreme base of gt1 brownish ( Figs 121, 122 View FIGURES 121–124 ). Whole antenna black ( Figs 123, 124 View FIGURES 121–124 ). Toruli closer to median ocellus than to clypeal margin ( Fig. 123 View FIGURES 121–124 ). Scape not or only very slightly exceeding level of vertex ( Fig. 123 View FIGURES 121–124 ); all funicular segments long and thin, proximal ones usually slightly conical; segments uniformly covered by short dense setae, and separated from each other by very short tubular connections ( Fig. 124 View FIGURES 121–124 ); pedicel plus flagellum about 1.6–1.9× head width; fu1 length about 3.70– 4.25× width, slightly widening distally; clava not defined, distance between segments not shorter than distance between funicular segments ( Fig. 124 View FIGURES 121–124 ). Metasoma length about 1.5–1.9× width, narrower and usually shorter than mesosoma ( Figs 121, 122 View FIGURES 121–124 ).

Comments. In the original description Risbec (1957) mentioned one female and three males. In MRAC they stand as “ holotypus ”—the female, “ allotypus ”— one male, and “ paratypus ”— two males, these specimens having been listed as such by Mitroiu (2011). However, because no such distinction has been made in the original description, according to the International Commission of Zoological Nomenclature (ICZN), all specimens should have been treated as syntypes; accordingly, a lectotype is here designated and the remaining specimens as paralectotypes (see above). The only female of the type series was chosen as lectotype because this was described in detail by Risbec. Norbanus kitegaensis is very close to N. garouae from which it differs in having darker colour, smaller eyes, shorter POL, longer temples, higher mesosoma, and larger body size. However, it is possible that N. kitegaensis represents only a larger form of N. garouae .

Distribution. Burundi, Rwanda ( Risbec, 1957); South Africa, Zambia, Zimbabwe (new records) (Map 8).

Hosts. Unknown.