A new leafhopper genus Geelus and 12 new species (Hemiptera, Cicadellidae Deltocephalinae) from Southern Africa Author Stiller, Michael text Zootaxa 2020 2020-06-03 4786 3 301 344 journal article 10.11646/zootaxa.4786.3.1 1175-5326 3876635 94F4B2D8-3941-493A-B9AA-80553E22759C Geelus nektanddraad sp.n. ( Figs 7 D–H, 9A–K) Diagnosis . Aedeagal shaft curvate with two pairs of median teeth, dorsal apodeme reduced, preatrium angled 270° to shaft. Pygofer process smooth, sublinear, orientation posteroventrad. Female sternite 7 with widely notched median ligula, recessed or flush with lateral margin. Etymology . Afrikaans compound word, nouns in apposition, nek = neck, mid-section, and tand = tooth, for the two pairs of distinct teeth medially on the shaft of the aedeagus. Gender masculine. Male . Measurements . n=24. Length from apex of crown to apex of tegmina 4.75–5.05 mm . Crown median length 0.39–0.42 mm . Crown length next to eye 0.32–0.35 mm . Pronotum length 0.48–0.52 mm . Head width across eyes 1.36–1.45 mm . Pronotum width 1.29–1.38 mm . Ocellus diameter 39.3–51.1 μm; interocular distance 66.8– 81.8 µm . Apical angle of crown 120°±1.8°. Pygofer lobe . Process orientation posteroventrad, sublinear, edentate, origin mediodorsally near base of pygofer lobe; pygofer lobe slightly narrower than pygofer, broadly triangular, apex triangular; anterior apodeme short, laterodorsal. Apex of pygofer lobe extend beyond apex of subgenital plate ( Fig. 9F ). Anal tube . Tubular ( Fig. 9G ). Subgenital plate . Number of macrosetae, 3–4; medioposterior angle, round; length: width 0.8–0.9; position of macrosetae, distal half ( Fig. 9E ). Valve . Shape crescentic ( Fig. 9E ). Style . Apophysis with subapical, lateroventral tooth; apical tooth ventral; apophysis width at base about two thirds of width across preapical lobe; ratio length to width of apophysis 3.4–4.8 ( Fig. 9C ). Connective . Stem length relative to arm length, half as long as arms; stem width relative to width across arms, half as wide as greatest width across arms ( Fig. 9D ). Aedeagus . Shaft thick; apex of shaft blunt, partially membranous and sclerotized; denticulation of shaft medially, with dorsal and ventral paired teeth; shaft curvate; dorsal apodeme, viewed laterally; reduced; preatrium rotated 270° ( Figs 9A, 9B ). Female . Measurements . n=33. Length from apex of crown to apex of tegmina 4.84–5.18 mm . Crown median length 0.40–0.44 mm . Crown length next to eye 0.32–0.35 mm . Pronotum length 0.49–0.53 mm . Head width across eyes 1.42–1.49 mm . Pronotum width 1.33–1.42 mm . Ocellus diameter 39.1–49.1 μm; interocular distance 66.5–82.9 µm . Apical angle of crown 120.1°±2.0°. Sternite 7 . Posterior margin with wide, shallow notch, spanning posterior margin; ligula present with short, wide, rounded notch; ligula recessed (all from Biesiesfontein, Figs 9H , on Zygophyllum , Fig. 9I , on Sarcocaulon , Fig. 9J , on Pteronia ). Valvifer 1 . Symmetrical or ventral margin produced narrowly ( Fig. 9K ). Material examined . Holotype male. South Africa , Northern Cape Province , CCDL 18878, Biesiesfontein Farm S Springbok, -29.75, 17.9333, 29.ix.–3.x.2002 , M. Stiller, sweeping Galenia africana , Aizoaceae ( SANC ). Paratypes . 27♂ , 32♀ , 9 nymphs. Northern Cape Province , records below all this locality: Biesiesfontein Farm S Springbok, -29.75, 17.9333, 29.ix.–3.x.2002 , M. Stiller, sweeping. 3♂ , 1♀ , 3 nymphs, CCDL 18877, Atriplex nummularia subsp. nummularia , Aizoaceae ; 1♂ , 2 nymphs, CCDL 18876, Calobota sericea , Fabaceae ; 3♂ , 8♀ , CCDL 18874, Pteronia divariculata , Asteraceae ; 11♂ , 11♀ , 3 nymphs, ibid. holotype ; 4♂ , 5♀ , CCDL 18875, Sarcocaulon l’heriteri, Geraniaceae ; 1♂ , CCDL 26934, light trap; 1♂ , CCDL 26935, Diospyros ramulosa , Ebenaceae ; 1♂ , 3♀ , CCDL 26933, Searsia undulata , Anacardiaceae ; 1♀ , CCDL 26936, at night near light trap, Zygophyllum retofractrum , Zygophyllaceae ; Western Cape Province , 2♂ , 3♀ , 1 nymph, CCDL 18853, Wiedouw Farm base of Gifberg Pass, -31.7334 , 18.7666 , 3–10.x.2002 , M. Stiller, sweeping, Salvia lanceolata , Lamiaceae ( BMNH , INHS , SANC ). FIGURE 9. Geelus nektanddraad gen . n . & sp . n ., male and female genitalia, line drawings. A. Aedeagus, dorsally; B. Aedeagus, laterally; C. Style; D. Connective; E. Subgenital plate; F. Genital capsule, laterally; G. Genital capsule, dorsally; H. Sternite 7, Biesiesfontein specimen, on Zygophyllum ; I. Sternite 7, Biesiesfontein specimen, on Sarcocaulon ; J. Sternite 7, Biesiesfontein specimen, on Pteronia ; K. Valvifer 1, laterally. Remarks . Unique in this species in the male are the thick shaft, two medial pairs of teeth and in the female the cup-shape ligula recessed medially into the sternite 7. Other species have the ligula rectangular ( G. drietanddraad , Fig. 14I ), square with small notch ( G. slangdraad , Fig. 17I ), rounded in G. platdraad ( Figs 12L, 12O ), and resemblance in G. stompdraad ( Fig. 11I ). Color and shape of crown ( Figs 7 D–F) and nymph ( Figs 7G, H ) resemble the other species closely, e.g. Figs 1 , 2 and 5 .