Hadroca bualacauda, 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/2D103BDA-95C5-4CBE-ABDE-170CA5F57842
taxon LSID	lsid:zoobank.org:act:2D103BDA-95C5-4CBE-ABDE-170CA5F57842
treatment provided by	Deutsche Entomologische Zeitschrift by Pensoft
scientific name	Hadroca bualacauda
status	sp. nov.

Treatment

Hadroca bualacauda sp. nov.

Figs 15 View Figure 15. A–H -18 View Figure 18. A–S , 26D View Figure 26. A–E

Diagnosis.

Tegmina macropterous, posterior margin with narrow, acuminate extension, light brown, oblique band medially.

Aedeagal shaft short, strongly curvate, 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 with short, wide ligula, recessed in deep or shallow V-shaped, wide notch.

Etymology.

Named in Latin, for the large specimen with the wing tail, bu -, prefix meaning large, ala, wing, cauda, tail, gender feminine.

Color.

Male, female & nymph. Dorsum usually unmarked. Tegmina with some cells whitish, sometimes with brown reticulation, distally embrowned, veins light brown (Fig. 15A-C View Figure 15. A–H ). Face unmarked (Fig. 15E View Figure 15. A–H ). Nymph color as in Fig. 15D View Figure 15. A–H with abdomen darker than head, pronotum and thorax.

Morphology.

Male. Tegmina. Macropterous (Fig. 15A, C View Figure 15. A–H ), (length/width 2.9-3.2, length 4.1-4.8 mm, width 1.34-1.5 mm); posterior margin narrowly extended with numerous cross veins (Figs 15A, C View Figure 15. A–H , 18R View Figure 18. A–S ).

Hind wing. Reduced (Fig. 18O View Figure 18. A–S ), elongate (length/width 3.4-4.0, male 2.9-3.5 mm long, 0.8-1.0 mm wide).

Female. Tegmina. Macropterous (Fig. 15B View Figure 15. A–H ), length/width 2.9-3.3, length 4.3-5.1 mm, width 1.4-1.6 mm; posterior margin narrowly extended with numerous cross veins (Figs 15B View Figure 15. A–H , 18R View Figure 18. A–S ).

Hind wing. Reduced (Fig. 18P View Figure 18. A–S ), elongate, length/width 3.4-4.0, length 3.2-3.8 mm, width 0.9-1.0 mm.

Chaetotaxy. AV 9-14, IC 8-10, single AV1 seta. (Fig. 15G, H View Figure 15. A–H ).

Measurements.

Male. (n=41). Apex of crown to apex of tegmina 5.02-5.95 mm; apex of crown to apex of abdomen 3.87-4.63 mm; crown length 0.52-0.61 mm; crown length next to eye 0.34-0.40 mm; pronotum length 0.58-0.67 mm; head width 1.67-1.81 mm; pronotum width 1.63-1.82 mm; ocellus diameter 24-40 µm; interocular distance 175-207 µm; crown angle 111-117°; crown length/crown length next to eye 1.46-1.62; head width/pronotum width 0.99-1.04; ocellus diameter/interocular distance 0.12-0.21; crown length/pronotum length 0.83-0.97; pronotum length/pronotum width 0.35-0.38; crown length/head width 0.30-0.35; crown length/pronotum width 0.31-0.35; length to tegmina/length to abdomen 1.24-1.35.

Female. (n=63). Apex of crown to apex of tegmina 5.51-6.49 mm; apex of crown to apex of abdomen 4.57-5.23 mm; crown length 0.56-0.63 mm; crown length next to eye 0.37-0.41 mm; pronotum length 0.64-0.72 mm; head width 1.76-1.92 mm; pronotum width 1.74-1.93 mm; ocellus diameter 25-36 µm; interocular distance 188-227 µm; crown angle 111-117°; crown length/crown length next to eye 1.44-1.61; head width/pronotum width 0.98-1.02; ocellus diameter/interocular distance 0.12-0.18; crown length/pronotum length 0.82-0.94; pronotum length/pronotum width 0.36-0.38; crown length/head width 0.31-0.34; crown length/pronotum width 0.30-0.35; tegmina/length to abdomen 1.18-1.28.

Terminalia.

Male.

Aedeagus. Shaft edentate, narrowly curvate (Fig. 18E, F View Figure 18. A–S ), segment angle 175-189°, short, apically narrower than medially, gonopore circular, anteriad (Fig. 18G View Figure 18. A–S ), rarely extended posteriad, shallow in Van Rhynsdorp specimen, deeply in Dwarsrivier specimen (Fig. 18I View Figure 18. A–S ). Curvature depicted by segment defined by chord and height 167-181°. In lateral view, area 28-44 µm 2, perimeter 1.142-1.742 mm; greatest straight line length from atrium to apex of dorsal apodeme/greatest straight line length from atrium to apex of shaft 0.39-0.50.

Style. Apophysis short (length apophysis/length greatest 0.1-0.2), straight, length greatest/width greatest 1.5-1.9 (Fig. 18K, L View Figure 18. A–S ).

Connective. Longer than wide, stem longer or shorter than arms (length stem/length arms 1.0-1.5), length greatest/width greatest 2.0-2.7 (Fig. 18M, N View Figure 18. A–S ).

Subgenital plate. Lateral margin concave, apex narrow, variably elongated, densely rugulose; length/width 1.3-1.9, 4-8 macrosetae, length 44-183 µm; angle at apex of subgenital plate, by trigonometry 29-37° (Fig. 18C, D View Figure 18. A–S ).

Connective lobe. In lateral view longer than greatest width (length/width 1.1-1.4), posterior margin rounded. Macrosetae 44-178 µm long (Fig. 18B View Figure 18. A–S ).

Female.

Sternite VII. Rectangular, with short, narrow ligula (length/width 0.2-0.6), recessed in deep or shallow, wide, V-shaped posterior margin (Figs 15F View Figure 15. A–H , 18O, P View Figure 18. A–S ). Posterior margin slightly recessed (lateral length/medial length 1.1-1.2), transversely rectangular (length/width 0.4-0.5), posterior margin with wide recess (notch width/sternite VII greatest width 0.6-0.7).

Valvula 3. Whole part in Fig. 17C View Figure 17. A–L . Macrosetae length 22-38 µm, 1-2 irregular rows (Figs 16D View Figure 16. A–K , 17G View Figure 17. A–L ).

Valvula 2. Whole part in Fig. 17D View Figure 17. A–L . Distally serrate (Fig. 16C, F, G View Figure 16. A–K ), base sclerotized, desclerotized area medially between apex and base.

Valvula 1. Whole part in Fig. 17A, B View Figure 17. A–L . Sculpture apically granulose (Fig. 17F View Figure 17. A–L ) and basally strigate (Figs 16A, B View Figure 16. A–K , 17E, L View Figure 17. A–L ).

Valvifer 2. Length/width 2.5-2.9, sculpture small triangular scales (Figs 16J, K View Figure 16. A–K , 17I-K View Figure 17. A–L ).

Valvifer 1. Length/width 1.8-2.2, distal margin blunt (Figs 16E, H, I View Figure 16. A–K , 17H View Figure 17. A–L ).

Material examined.

Type locality. Holotype male. South Africa, Northern Cape province, Biesiesfontein Farm south Springbok , -29.75, 17.93, 29 Sep.-3 Oct. 2002, 710 m, M. Stiller leg., sweeping, Pteronia divariculata , Asteraceae , CCDL18292, SANC.

Type specimen.

Paratypes. 59♂♂, 84♀♀, 39 nymphs, 183 total specimens.

Remarks.

This species was larger than the other species of Hadroca , and with an acuminate extension at the posterior margin of the tegmina. Hadroca alacaudella sp. nov. also had a similar extension of the tegmina, but was much narrower and shorter. Differences are elucidated under the remarks section of H. alacaudella sp. nov. Variability in the aedeagus of H. bualacauda sp. nov. was confined to the degree of taper of the shaft in lateral view, and generally appeared to be thicker than in other species of Hadroca . The subgenital plate was more variable in the length of the apex, as in Fig. 18C, D View Figure 18. A–S . The depth of the notch in the female sternite was variable, as in Fig. 18O, P View Figure 18. A–S . The acuminate extension of the tegmina had more cross veins (Fig. 18S View Figure 18. A–S ) than in H. alacaudella sp. nov. (Fig. 23P View Figure 23. A–P ). Point distribution and potential natural distribution are in Fig. 26D View Figure 26. A–E . Twenty two records were without an associated plant, and 17 records had the following plant associations (family, genus, species):