Norbanus rotundus, Mitroiu, 2015

Norbanus rotundus View in CoL sp. nov.

( Figs 173–178 View FIGURES 173–178 )

Diagnosis. FEMALE. Head and mesosoma dark olive-green ( Figs 173–176 View FIGURES 173–178 ). Metasoma brown ( Figs. 173, 174 View FIGURES 173–178 ). Antenna yellow except dark brown clava ( Fig. 177 View FIGURES 173–178 ). Tibiae entirely yellow ( Fig. 173 View FIGURES 173–178 ). Head almost round in frontal view, width about 1.1× height, without distinct elevation between eye and posterior ocellus ( Fig. 175 View FIGURES 173–178 ). Clypeal margin slightly emarginate ( Fig. 175 View FIGURES 173–178 ). POL about 2.5× OOL ( Fig. 176 View FIGURES 173–178 ). Temple about 0.2× as long as eye in dorsal view. Eye narrow ( Fig. 173 View FIGURES 173–178 ), height about 1.7× length. Antennae inserted about level with lower margins of eyes; second anellus transverse, longer than the first; clava slightly wider than fu6, abruptly narrowing before spicula ( Fig. 177 View FIGURES 173–178 ). Upper mesepimeron smooth ( Fig. 173 View FIGURES 173–178 ). Scutellum slightly convex ( Fig. 173 View FIGURES 173–178 ). Propodeum inclined (Fig. 1730, spiracular sulci absent (cf. Fig. 11 View FIGURES 7–12 ). Speculum large, reaching to stigmal vein; fringe on apical margin of fore wing present ( Fig. 178 View FIGURES 173–178 ). Metasoma about as long as head plus mesosoma ( Figs 173 View FIGURES 173–178 ), length about twice width. Posterior margin of gt1 slightly sinuous (cf. Fig. 19 View FIGURES 19–22 ).

Material examined. Holotype ♀ ( CNC). BOTSWANA: “BOTSWANA: Serowe Farmer’s Brigade, IX.1987 MT, P. Forchhammer ” [on rectangular card].

Paratypes. BOTSWANA: 1 ♀, same information as holotype ( CNC) .

Description. FEMALE (holotype). Colour. Head and mesosoma dark olive-green ( Figs 173–176 View FIGURES 173–178 ). Metasoma brown ( Figs 173, 174 View FIGURES 173–178 ). Body pilosity short whitish ( Figs 173–176 View FIGURES 173–178 ). Eyes red, ocelli whitish ( Figs 175, 176 View FIGURES 173–178 ). Mandibles reddish-yellow, teeth reddish-brown ( Fig. 175 View FIGURES 173–178 ). Antenna yellow except dark brown clava (fig. 177). Wings hyaline, tegulae and venation light brown, wing pilosity whitish ( Fig. 178 View FIGURES 173–178 ). Legs ( Fig. 173 View FIGURES 173–178 ) with all coxae as mesosoma; trochanters light brown; femora dark brown, paler at distal end; tibiae yellow; tarsi yellow, last segment light brown, arolia and claws darker.

Body length. 2.75 mm.

Head without distinct elevation between eye and posterior ocellus, finely reticulate except lower face finely striated, striation laterally almost reaching toruli ( Figs 175, 176 View FIGURES 173–178 ). Clypeal margin very shallowly emarginate ( Fig. 175 View FIGURES 173–178 ). Eye narrow, anterior and posterior margins not sinuous ( Fig. 173 View FIGURES 173–178 ). Gena with a weak lamina near mouth corner. Scrobes moderately shallow, slightly visible in dorsal view of the head. Toruli with lower margins about level with lower margins of eyes ( Fig. 175 View FIGURES 173–178 ). Antenna ( Fig. 177 View FIGURES 173–178 ) with scape reaching upper edge of median ocellus; first anellus strongly transverse, the second clearly longer than the first; funicular segments longer than wide; clava ventrally abruptly narrowing before spicula, sutures hardly visible, oblique; micropilosity area occupying about 1/3 length of claval body. Relative measurements—head length: 27, width: 55, height: 49; POL: 15; OOL: 6; eye height: 30, length: 18; IOD: 32.5; eye length dorsally: 18; temple length dorsally: 3.5; malar space: 16.5; mouth width: 26; distance between clypeal margin and toruli: 19; scape length: 29; pedicel length: 6, width: 3; pedicel plus flagellum: 60; fu1 length: 7, width: 3; fu6 length: 6, width: 4; clava length: 14, width: 5.

MAP 12. Distribution of N. rotundus and N. seyrigi

Mesosoma dorsally coarsely reticulate ( Fig. 174 View FIGURES 173–178 ). Notauli reaching slightly beyond middle of mesoscutum ( Fig. 174 View FIGURES 173–178 ). Scutellum slightly convex ( Fig. 173 View FIGURES 173–178 ), frenal line absent, but frenal area with finer reticulation than rest of scutellum, covered by dense pilosity. Upper mesepimeron smooth ( Fig. 173 View FIGURES 173–178 ). Metapleuron and dorsellum uniformly reticulate. Propodeum inclined ( Fig. 173 View FIGURES 173–178 ), uniformly reticulate except two small depressions near its anterior margin submedially; spiracles oval, spiracular sulci absent (cf. Fig. 11 View FIGURES 7–12 ). Fore wing ( Fig. 178 View FIGURES 173–178 ) with basal cell and basal fold glabrous; costal cell with several rows of setae on ventral surface; speculum large, extending to stigmal vein; wing pilosity including marginal fringe short; stigma moderately capitate. Relative measurements— mesosomal length: 60, width: 46, height: 40; mesoscutum length: 24; scutellum length: 23, width: 29; propodeum length: 12; fore wing length: 110, width: 49; M: 17; S: 10; P: 14.

Metasoma ovate-acuminate, about as long as head plus mesosoma ( Fig. 173 View FIGURES 173–178 ), 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 sinuous, not incised (cf. Fig. 19 View FIGURES 19–22 ). Ovipositor sheaths short, slightly visible in dorsal view ( Fig. 174 View FIGURES 173–178 ). Relative measurements—metasomal length: 80, width: 41; gt1 length: 18; gt7 length: 6, width: 15.

MALE. Unknown; based on the characters of the female, it should be very close to the males of N. africanus and N. caloramans .

Variation. Not conspicuous in the available material.

Comments. The species most closely resembles N. africanus and N. caloramans . From both species it differs in the much shorter OOL and narrower eyes. From N. caloramans it also differs in the colour of tibiae (entirely yellow in N. rotundus , brownish medially in N. caloramans ).

Etymology. The name refers to the almost round head, as it appears in frontal view.

Distribution. Botswana (Map 12).

Hosts. Unknown.