Hadroca alacaudella, Stiller, 2023

Stiller, Michael, 2023, Revision of the South African leafhopper genus Hadroca Theron (Hemiptera, Auchenorrhyncha, Cicadellidae, Bonaspeiini), Deutsche Entomologische Zeitschrift 70 (1), pp. 13-54 : 13

publication ID	https://dx.doi.org/10.3897/dez.70.90851
publication LSID	lsid:zoobank.org:pub:6D8B46D4-35BE-4D27-8E83-114743405631
persistent identifier	https://treatment.plazi.org/id/7B616E81-5391-46DF-885B-6069AF5AB8D9
taxon LSID	lsid:zoobank.org:act:7B616E81-5391-46DF-885B-6069AF5AB8D9
treatment provided by	Deutsche Entomologische Zeitschrift by Pensoft
scientific name	Hadroca alacaudella
status	sp. nov.

Treatment

Hadroca alacaudella sp. nov.

Figs 22 View Figure 22. A–L , 23 View Figure 23. A–P , 26E View Figure 26. A–E

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 View Figure 22. A–L ). Nymph light brown, ochraceous narrow median line (Fig. 22E View Figure 22. A–L ).

Morphology.

Male. Tegmina. Macropterous (Figs 22A-D, L, K View Figure 22. A–L , 23P View Figure 23. A–P ), (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 View Figure 22. A–L ).

Hind wing. Reduced (Fig. 21L View Figure 21. A–X ), 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 View Figure 22. A–L ).

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 View Figure 22. A–L ).

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 View Figure 23. A–P ); 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 View Figure 23. A–P ).

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 View Figure 23. A–P ).

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 View Figure 23. A–P ).

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 View Figure 23. A–P ).

Female.

Sternite VII. Rectangular, posterior margin straight to slightly sinuous (Figs 22H, I View Figure 22. A–L , 23I View Figure 23. A–P ). 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 View Figure 23. A–P ).

Valvula 2. Apex serrate (Fig. 23K View Figure 23. A–P ), fine teeth in trough, rounded teeth as in Fig. 20H, I View Figure 20. A–J .

Valvula 1. Lanceolate (resembling Fig. 21V View Figure 21. A–X ), sculpture strigate (as in Fig. 20E-G View Figure 20. A–J ).

Valvifer 2. Length/width 2.3-2.9 (Fig. 23N View Figure 23. A–P ), sculpture in Fig. 23O View Figure 23. A–P .

Valvifer 1. Length/width 2.2-2.8 (Fig. 23M, L View Figure 23. A–P ).

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; GoogleMaps

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 View Table 2 .

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 View Figure 23. A–P ). In H. bualacauda sp. nov. the aedeagus was narrowly curvate and narrower distally than medially in lateral view (Fig. 18E, F View Figure 18. A–S ). 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 View Figure 26. A–E from one locality indicated by a red circle.