Norbanus gibber, Mitroiu, 2015

Norbanus gibber View in CoL sp. nov.

( Figs 83–92 View FIGURES 83–88 View FIGURES 89–92 )

Diagnosis. BOTH SEXES. Head and mesosoma black ( Figs 83–85 View FIGURES 83–88 , 92 View FIGURES 89–92 ); hind tibia yellow to conspicuously dark medially ( Figs 84 View FIGURES 83–88 , 92 View FIGURES 89–92 ). Head without distinct elevation between eye and posterior ocellus ( Fig. 85 View FIGURES 83–88 ). Clypeal margin virtually straight ( Fig. 85 View FIGURES 83–88 ). Second anellus quadrate to longer than wide ( Fig. 87 View FIGURES 83–88 ). Scutellum very convex, globose ( Fig. 83 View FIGURES 83–88 , 92 View FIGURES 89–92 ). Anterior area of metapleuron with very shallow sculpture, shiny ( Fig. 86 View FIGURES 83–88 ). Spiracular sulci indicated at least by an oval depression posterior to each spiracle ( Fig. 91 View FIGURES 89–92 ).

FEMALE. Metasoma dorsally at least partly reddish, with black margins ( Figs 83, 84 View FIGURES 83–88 , 89, 90 View FIGURES 89–92 ); antenna mostly brown, anelli and clava pale ( Fig. 87 View FIGURES 83–88 ). Posterior margin of gt1 entire or slightly ( Fig. 89 View FIGURES 89–92 ) to conspicuously double-incised ( Fig. 90 View FIGURES 89–92 ).

MALE. Scape slightly exceeding level of vertex; each funicular segment of uniform width, long and thin, not conspicuously widened proximally and distally, more or less uniformly covered by short dense setae, and separated from each other by short tubular connections ( Fig. 92 View FIGURES 89–92 ); pedicel plus flagellum about 1.5–1.7× head width.

Material examined. Holotype ♀ ( BMNH). GAMBIA: “ W. Afr. Gambia, Lamin, Abuko, 27/I.78. L. Huggert ” [on rectangular card].

Allotype ♂. ZIMBABWE: “RHODESIA: Salisbury, A. Watsham / WF.165 v.75”, “as R 19” ( BMNH).

Additional paratypes. CAMEROON: 1 ♀ “ Cameroon: Nkoemuon , VII.–VIII. 1979, D. Jackson. Mal. tr.” ( BMNH) ; D.R. CONGO: 3 ♀ “ Congo Belge, P. N.G., Miss. H. De Saeger, Pp. K/55/d/8, 19-xi-1951, Réc. H. De Saeger. 2768” ( MRAC) ; 1 ♀ “ Congo Belge, P. N.G., Miss. H. De Saeger, II/gd/4, 6-vii-1951, Réc. H. De Saeger. 2050” ( MRAC) ; 1 ♀ “ Congo Belge, P. N.G., Miss. H. De Saeger , II/gd/11, 11-iii-1952, H. De Saeger. 3183” ( MRAC) ; 1 ♀ “ Congo Belge, P. N.G., Miss. H. De Saeger, Mabanga , 29-ix-1952, H. De Saeger. 4103” ( MRAC) ; 1 ♀ “ Congo Belge : P.N.A. 19–20-vii-1955, P. Vanschuytbroeck, 13.753-61”, “Mont Hoyo grotte Yolohafiri, 1030 m ” ( MRAC) ; 1 ♀ “ Congo Belge, P. N.G., Miss H. De Saeger, II/fd/10, 20-xii-1951, Réc. H. De Saeger. 2935” ( MRAC) ; 1 ♂ “ Congo Belge, P. N.G., Miss H. De Saeger, Napukumweli , 6-ix-1950, Réc. G. Demoulin. 806” ( MRAC) ; 1 ♂ “ Congo Belge, P. N.G., Miss. H. De Saeger , II/fd/12, 10-iii-1952, H. De Saeger. 3178” ( MRAC) . IVORY COAST: 1 ♀ “ Côte d’Ivoire, Katiola-Coton , 26.XII.1980 malaise, leg. J.W. Everts c.s.” ( RMNH) . SOUTH AFRICA: 1 ♀ “S. Africa R.E. Turner. Brit. Mus. 1923-332”, “ Port St. John , Pondoland , May 15–31. 1923 ” ( BMNH) ; 1 ♀ “SOUTH AFRICA: Transvaal, Kruger Nat. Park, Satara 15–18.XII.1985, S.&J. Peck ( CNC) ; 1 ♀ “SOUTH AFRICA, Langjan Prov. Nature Res., Tvl., i.1980, G L Prinsloo”, “NATIONAL COLL OF INSECTS ( SANC), Pretoria, South Africa ” ( SANC) ; 1 ♀ and 1 ♂ “SOUTH AFRICA, Hans Strijdom Dam Prov. Nat. Res. nr. Ellisras, Tvl , i.1988, GL Prinsloo” “NATIONAL COLL OF INSECTS ( SANC), Pretoria, South Africa ” ( SANC) ; 1 ♀ “SOUTH AFRICA, Lekgalameetse Nat. Res. nr.”, “ Trichardsdal Tvl. Ii.1989, G.L. Prinsloo ”, “NATIONAL COLL OF INSECTS ( SANC), Pretoria , South Africa ” ( SANC) ; 1 ♀ “SOUTH AFRICA KZN, Kuleni Farm E of Hluhluwe, 27.54S 32.22E, 14.ii.1990 CD Eardley”, “NATIONAL COLL OF INSECTS ( SANC), Pretoria, South Africa ” ( SANC) GoogleMaps ; 1 ♀ “SOUTH AFRICA, NATAL, Fanies Island camp, St. Lucia, 28.10S 32.25E. 14–16.i.1981. G.L. Prinsloo ” “NATIONAL COLL OF INSECTS ( SANC), Pretoria, South Africa ” ( SANC) GoogleMaps ; 1 ♂ “ S. Africa R.E. Turner. Brit. Mus. 1924-177.”, “ Port St. John, Pondoland , 1–17.Mar.1924 ” ( BMNH) ; 2 ♂ “ S. Africa. R.E. Turner. Brit. Mus. 1923-286.”, “ Port St. John , Pondoland. April 5–30.1923.” ( BMNH) ; 1 ♂ “ SOUTH

AFRICA, Natal, Vernon Crookes Nat. Res., Umzinto, 30.17S 30.37E. 443m. 25–26.iii.1985. G.L. Prinsloo ”, “NATIONAL COLL. OF INSECTS ( SANC), Pretoria , South Africa ” ( SANC). ZIMBABWE : 1 ♀ “Rhodesia, Salisbury, A. Watsham / WF. 168 (V) 75” ( BMNH) ; 1 ♀ “RHODESIA: Salisbury , v. 1978, A. Watsham ” ( MICO); 1 ♂ “RHODESIA: Chishawasha, 10.ii.1979, A. Watsham ” ( MICO) ; 4 ♂ “ZIMBABWE Rekomitjie Res. Stat. malaise 16 10’ s. 29 25’ e. alt. 500– 600 m.”, “C.A. Groenendijk, 13/5–26/5 1992” ( RMNH) GoogleMaps .

Description. FEMALE (holotype). Colour: Head and mesosoma black, with very faint green-bronze reflections. Metasoma dorsally mainly reddish, lateral surfaces dark brown to black, ventral surface light brown, ovipositor sheaths black. Body pilosity short whitish ( Figs 83–86 View FIGURES 83–88 ). Eyes grey, ocelli light brown ( Fig. 85 View FIGURES 83–88 ). Mandibles brown. Antenna ( Fig. 87 View FIGURES 83–88 ) with scape dark brown except whitish base; pedicel and funicle brown, anelli and clava yellowish, the latter slightly darker basally. Wings hyaline, tegulae brown, venation light brown ( Fig. 88 View FIGURES 83–88 ). Legs with coxae as mesosoma; trochanters and femora brown, extreme distal end of the latter pale yellow; fore tibia brown with pale yellow knee and a strip of the same colour on kickface; mid tibia with an extensive brown band around middle of segment, leaving pale yellow extremities; hind tibia entirely pale yellow ( Fig. 84 View FIGURES 83–88 ); all tarsi pale yellow, claws and arolia light brown.

Body length. 4 mm.

Head without distinct elevation between eye and posterior ocellus, finely reticulate except lower face extensively and finely striated, striation not reaching toruli (cf. Fig. 85 View FIGURES 83–88 ). Clypeal margin virtually straight (cf. Fig. 85 View FIGURES 83–88 ). Eye ovate, anterior and posterior margins not sinuous ( Fig. 83 View FIGURES 83–88 ). Gena without clearly defined lamina near mouth corner. Scrobes short and shallow, slightly visible in dorsal view of the head. Toruli with lower margins very slightly above level of lower margins of eyes. Antenna ( Fig. 87 View FIGURES 83–88 ) with scape not reaching level of vertex (cf. Fig. 85 View FIGURES 83–88 ); first anellus clearly transverse, the second about twice as long as the first and about 1.3× as long as wide; funicular segments longer than wide; clava ventrally gradually narrowing before spicula, sutures hardly visible, oblique; micropilosity area barely visible, occupying about 1/4 length of claval body. Relative measurements— head length: 28, width: 58.5, height: 50; POL: 12; OOL: 10; eye height: 26.5, length: 19; IOD: 38; eye length dorsally: 18; temple length dorsally: 5.5; malar space: 18; distance between clypeal margin and toruli: 23; scape length: 27; pedicel length: 6, width: 3; pedicel plus flagellum: 59; fu1 length: 18.5, width: 5; fu6 length: 10, width: 7; clava length: 21, width: 9.

Mesosoma dorsally coarsely reticulate ( Fig. 84 View FIGURES 83–88 ). Notauli indistinct ( Fig. 84 View FIGURES 83–88 ). Scutellum very convex, globose ( Fig. 83 View FIGURES 83–88 ); frenal line absent, but frenal area with finer reticulation than rest of scutellum. Upper mesepimeron smooth (cf. Fig. 86 View FIGURES 83–88 ). Anterior area of metapleuron with very shallow sculpture, shiny (cf. Fig. 86 View FIGURES 83–88 ). Dorsellum uniformly and finely reticulate ( Fig. 91 View FIGURES 89–92 ). Propodeum inclined ( Fig. 83 View FIGURES 83–88 ), uniformly reticulate except two small roundish depressions near its anterior margin submedially, and shallow spiracular sulci; spiracles large and elongate, their anterior edge nearly touching metanotum ( Fig. 91 View FIGURES 89–92 ). Fore wing ( Fig. 88 View FIGURES 83–88 ) with basal cell and basal fold glabrous; costal cell uniformly hairy on ventral surface; speculum reaching at most parastigma; pilosity dense on disc, area between stigmal vein and postmarginal vein mostly pilose; wing pilosity including marginal fringe short; stigma clearly capitate. Relative measurements—mesosomal length: 62, width: 50, height: 40; mesoscutum length: 25; scutellum length: 23, width: 30.5; propodeum length: 13; fore wing length: 115, width: 47; M: 22; S: 9; P: 16.

Metasoma ovate-acuminate, about equal to head plus mesosoma ( Figs 83, 84 View FIGURES 83–88 ), dorsally very finely reticulate-imbricate (alveolae wider than long), almost smooth ( Figs 89, 90 View FIGURES 89–92 ). Posterior margin of gt1 barely double-incised ( Fig. 89 View FIGURES 89–92 ). Ovipositor sheaths hardly visible in dorsal view ( Fig. 84 View FIGURES 83–88 ). Relative measurements—metasomal length: 85, width: 45; gt1 length: 17; gt7 length: 10.5, width: 10.5.

MALE (allotype). Differs from the female holotype mainly as follows. Body length: 4.25 mm. Antenna uniformly dark brown except base of scape and anelli, which are slightly lighter ( Fig. 92 View FIGURES 89–92 ). Metasoma extensively yellow in the proximal 2/3 on both dorsal and ventral surfaces, except extreme base of gt1, which is brownish; distal part brown ( Fig. 92 View FIGURES 89–92 ). Toruli much closer to median ocellus than to clypeal margin ( Fig. 92 View FIGURES 89–92 ). Scape slightly exceeding level of vertex; both anelli transverse; each funicular segment of uniform width, long and thin, not conspicuously widened proximally and distally, uniformly covered by short dense setae, and separated from each other by short tubular connections ( Fig. 92 View FIGURES 89–92 ); pedicel plus flagellum about 1.6× head width; fu1 length about 5× width; fu6 length about 3× width; clava length about 5.6× width. Metasoma length about twice width, shorter and narrower than head and mesosoma ( Fig. 92 View FIGURES 89–92 ).

MAP 6. Distribution of N. gibber and N. gracilis

Variation. BOTH SEXES. Spiracular sulci more or less deep, but at least a conspicuous depression posterior to each spiracle present.

FEMALES. Body length: 3.0– 6.5 mm. Eyes grey or reddish-brown (depending on the degradation of pigments); hind tibia yellow (specimens from Gambia, Ivory Coast and South Africa), or slightly brownish proximally (most specimens from D. R. Congo and Cameroon), or mostly dark (specimens from Zimbabwe); dorsal coloration of metasoma rather variable, from almost entirely reddish to almost completely brown, but always with at least a small reddish spot at base. In large specimens the second anellus distinctly longer than wide and scrobes deeper; in some small specimens second anellus quadrate. Head normally more or less uniformly hairy except eyes, but often in older specimens pilosity is lost. Head width about 2.1–2.3× mouth width. POL about 0.9– 1.3× OOL. Malar space from slightly longer to slightly shorter than eye length. Scape sometimes longer than eye height, reaching or not the level of vertex; pedicel plus flagellum from slightly shorter to slightly longer than head width; fu1 length about 3.3–3.7× width, fu6 length 1.3–1.5× width; clava length about 2.5–2.7× width. Mesosoma length about 1.2–1.5× height. In large specimens the scutellum appears slightly flattened to depressed along the median line, when observed in frontal or posterior view. Marginal vein about 2.4–2.6× as long as stigmal vein. Metasoma length about 1.9–2.3× width. Posterior margin of gt1 entire or slightly ( Fig. 89 View FIGURES 89–92 ) to conspicuously double-incised ( Fig. 90 View FIGURES 89–92 ); gt7 length about 0.8–1.0× maximum width.

MALES. Body length: 2.00– 4.25 mm. Pedicel plus flagellum about 1.5–1.7× head width; fu1 length about 4.3–5.0× width; fu6 length about 2.6–3.0× width; clava length about 4.6–5.6× width. Metasoma length about 1.8– 2.0× width.

Comments. This is a very distinct species, both sexes being easily recognizable especially by the convex globose scutellum; in addition, females can be readily recognized by the specific colour pattern of the metasoma.

Etymology. The name refers to the hunch-backed appearance of the insect due to the strongly convex scutellum.

Distribution. Cameroon, D. R. Congo, Gambia, Ivory Coast, South Africa, Zimbabwe (Map 6).

Hosts. Unknown.