Revision of the South African leafhopper genus Hadroca Theron (Hemiptera, Auchenorrhyncha, Cicadellidae, Bonaspeiini) Author Stiller, Michael https://orcid.org/0000-0002-4880-9760 Biosystematics Division, ARC-Plant Health and Protection, Private Bag X 134, Queenswood 0121, South Africa stillerm@arc.agric.za text Deutsche Entomologische Zeitschrift 2023 2023-02-03 70 1 13 54 http://dx.doi.org/10.3897/dez.70.90851 journal article http://dx.doi.org/10.3897/dez.70.90851 1860-1324-1-13 6D8B46D435BE4D278E83114743405631 CB095530EADA5E0486C5EBF218F47E8F Hadroca alacaudella sp. nov. Figs 22 , 23 , 26E Diagnosis. Tegmina macropterous, posterior margin with narrow, dark brown, acuminate extension. Hind wing reduced. Aedeagal shaft elongate, widely curvate, parallel-sided in lateral view, preatrium reduced. Style apophysis in dorsal view sublinear, in lateral view short, apex curved ventrad. Subgenital apex equidistant to apex of pygofer lobe. Female sternite VII posterior margin sublinear. Etymology. Named in Latin, for the small specimen with the wing tail, ala , wing, cauda , tail, diminutive suffix - ella , gender feminine. Color. Male, female & nymph. Dorsum usually unmarked, ground color light brown. Tegmina smoky translucent, apex embrowned with numerous light brown veins (Fig. 22A-D ). Nymph light brown, ochraceous narrow median line (Fig. 22E ). Morphology. Male. Tegmina . Macropterous (Figs 22A-D, L, K , 23P ), (length/width 3.7-4.0, length 3.2-3.4 mm, width 0.8-0.9 mm); posterior margin narrowly extended with numerous cross veins (Fig. 22J, K ). Hind wing . Reduced (Fig. 21L ), elongate (length/width 3.1-3.7, length 1.7-1.9 mm, width 0.5 mm). Female. Tegmina . Macropterous, length/width 3.9-4.3, length 4.0-4.4 mm, width 1.0-1.1 mm; posterior margin narrowly extended with numerous cross veins (as in male, Fig. 22J, K ). Hind wing . Reduced, elongate, length/width 3.7-4.0, length 2.5-2.8 mm, width 0.7 mm (as in male, Fig. 22L ). Chaetotaxy . Male AV 7-9 setae, female AV 8-9 setae, male and female, IC 7-10 setae. Measurements. Male. (n=8) Apex of crown to apex of tegmina 4.02-4.23 mm; apex of crown to apex of abdomen 2.80-2.94 mm; crown length 0.46-0.52 mm; crown length next to eye 0.30-0.32 mm; pronotum length 0.41-0.43 mm; head width 1.10-1.15 mm; pronotum width 1.05-1.09 mm; ocellus diameter 25-30 µm ; interocular distance 116-132 µm ; crown angle 95-101°; crown length/crown length next to eye 1.49-1.63; head width/pronotum width 1.04-1.06; ocellus diameter/interocular distance 0.19-0.24; crown length/pronotum length 1.09-1.23; pronotum length/pronotum width 0.38-0.40; crown length/head width 0.41-0.45; crown length/pronotum width 0.43-0.47; length to tegmina/length to abdomen 1.39-1.47. Female. (n=20) Apex of crown to apex of tegmina 4.99-5.33 mm; apex of crown to apex of abdomen 3.71-4.01 mm; crown length 0.52-0.58 mm; crown length next to eye 0.34-0.38 mm; pronotum length 0.48-0.51 mm; head width 1.29-1.33 mm; pronotum width 1.23-1.28 mm; ocellus diameter 23-34 µm ; interocular distance 140-153 µm ; crown angle 97-103°; crown length/crown length next to eye 1.45-1.61; head width/pronotum width 1.03-1.06; ocellus diameter/interocular distance 0.16-0.24; crown length/pronotum length 1.06-1.17; pronotum length/pronotum width 0.38-0.40; crown length/head width 0.40-0.44; crown length/pronotum width 0.42-0.46; length to tegmina/length to abdomen 1.28-1.40. Terminalia. Male. Aedeagus . Shaft narrowly curvate, segment angle 144-157°, apically wider than medially, dorsal apodeme angled anteriad, gonopore convoluted to V-shaped, subapically between anterior and posterior margin. In lateral view, area 38-44 µm 2, perimeter 1.494-2.325 mm (Fig. 23D, E ); greatest straight line length from atrium to apex of dorsal apodeme/greatest straight line length from atrium to apex of shaft 0.38-0.49. Style . Apophysis short (length apophysis/length greatest 0.1-0.2), straight, length greatest/width greatest 2.4-2.7 (Fig. 23G, H ). Connective . Longer than wide, stem longer than arms (length stem/length arms 1.6-2.0), length greatest/width greatest 2.3-2.9 (Fig. 23F ). Subgenital plate . Lateral margin concave; length/width 1.5-1.8, 5-7 macrosetae, length 60-98 µm ; angle at apex of subgenital plate, by trigonometry 29-33° (Fig. 23C ). Figure 22. A-L Hadroca alacaudella sp. nov., male, female and nymph, habitus images, face, sternite VII, tegmina, hind wing with specimen locality, Klondyke farm. A. Male, dorsally; B. Female, dorsally; C. Male, laterally; D. Female, laterally; E. Nymph, dorsally; F. Face, female; G. Face, male; H. Sternite VII; I. Sternite VII; J. Tegmina, transmitted light; K. Tegmina, reflected light; L. Hind wing. A-E , I-L . Scale bars: 1 mm. Connective lobe . In lateral view longer than greatest width (length/width 1.4-1.6), posterior margin rounded. Macrosetae, short setae length 42-62 µm , long setae length 83-134 µm , longest seta 165 µm , apices of long setae damaged by KOH (Fig. 23B ). Female. Sternite VII . Rectangular, posterior margin straight to slightly sinuous (Figs 22H, I , 23I ). Posterior margin laterally and medially similar length (lateral length/medial length 1.0), length/width 0.6, posterior margin wide, width across posterior margin/sternite VII greatest width 0.6-0.7. Valvula 3 . Macrosetae length 23-41 µm (Fig. 23J ). Valvula 2 . Apex serrate (Fig. 23K ), fine teeth in trough, rounded teeth as in Fig. 20H, I . Valvula 1 . Lanceolate (resembling Fig. 21V ), sculpture strigate (as in Fig. 20E-G ). Valvifer 2 . Length/width 2.3-2.9 (Fig. 23N ), sculpture in Fig. 23O . Valvifer 1 . Length/width 2.2-2.8 (Fig. 23M, L ). Material examined. Type locality. Holotype male, South Africa , Western Cape province , Klondyke farm, near Ceres , -33.308 , 19.577 , 28 Jan. 2022 , M. Stiller leg., sweeping, Senecio sp., Asteraceae , CCDL28915, SANC; Type specimen. Holotype male, glued to triangle card, pinned, with genitalia in microvial pinned to specimen. Original label "R.S.A. Klondyke | farm Bo Swaar- | moed, -33.308 | 19.577, 28.i. | 2022, M. Stiller || sweep | Senecio sp. | Asteraceae || SANC Pretoria | Database# CCDL / 28915". Paratypes . 14♂♂, 47♀♀, 7 nymphs, total specimens 68. Remarks. Hadroca alacaudella sp. nov. and H. bualacauda sp. nov. had the acuminate extension of the posterior margin of the tegmina, but specimens of the former were much narrower, the crown angle more acute and shorter than the latter, and listed in Table 2 . Figure 23. A-P Hadroca alacaudella sp. nov., male and female, terminalia, line drawings with specimen locality, Klondyke farm. A. Genital capsule, dorsally; B. Genital capsule, laterally; C. Subgenital plate; D. Aedeagus, laterally; E. Aedeagus, dorsally; F. Connective; G. Style; H. Style; I. Sternite VII; J. Valvula 3; K. Valvula 2; L. Valvifer 1; M. Valvifer 1; N. Valvifer 2; O. Valvifer 2, sculpture; P. Tegmina. Table 2. Measurements for comparison of Hadroca alacaudella sp. nov. and Hadroca bualacauda sp. nov.

Measurements	Hadroca alacaudella sp. nov.	Hadroca bualacauda sp. nov.
male apex of crown to apex of tegmina	4.02-4.23 mm	5.02-5.95 mm
male head width	1.10-1.15 mm	1.67-1.81 mm
male pronotum width	1.05-1.09 mm	1.63-1.82 mm
male crown angle	95-101°	111-117°
female apex of crown to apex of tegmina	4.99-5.33 mm	5.51-6.49 mm
female head width	1.29-1.33 mm	1.76-1.92 mm
female pronotum width	1.23-1.28 mm	1.74-1.93 mm
female crown angle	97-103°	111-117°

Male genitalia differed distinctly between these two species. In H. alacaudella sp. nov. the aedeagus was widely curvate, and wider distally than medially in lateral view (Fig. 23D ). In H. bualacauda sp. nov. the aedeagus was narrowly curvate and narrower distally than medially in lateral view (Fig. 18E, F ). The sternite VII of the female in H. alacaudella sp. nov. had the posterior margin sublinear, and in H. bualacauda sp. nov. it was ligulate with a wide, V-shaped notch. Distribution on the map in Fig. 26E from one locality indicated by a red circle.