Pravistylus serratus Stiller 2010, sp. n.
Creators: name: Stiller, M.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadellidae
Pravistylus
Pravistylus serratus

description: Pravistylus serratus sp. n.   
(Figs 1 ag; 2 v; 3 ae; 4 ac; 5 i; 6 ab; 7 bz; 8 bg)  
 Diagnosis. Pygofer at base with one row of about 8 prominent teeth (Figs 1 ag, 2 v). Plate triangular, apex narrowly pointed (Fig. 2 v). Style with distal part close to base (Fig. 5 i).   
 Etymology. Latin, for the row of teeth (serratus (toothed like a saw)) on the pygofer.   
 Male and female. Ochraceous, vertex sometimes with brown paired marking at apex. Tegmina commonly in female, rarely in male, with fuscous lining or more extensive marking in discal, inner anteapical and anterior claval cells. Hind wing about one third as long as tegmina (Fig. 8 bg).   
 Male. Dimensions. (n = 14) Length: apex of vertex to apex of tegmina 2.4–2.6 mm; apex of vertex to apex of abdomen 2.8–3.1 mm; vertex medially 0.5 mm; vertex next to eye 0.3 mm; pronotum medially 0.3 mm. Width: head 0.9–1.0 mm; pronotum 0.8–0.9 mm. Ocellar diameter 28.0 µm; ocellocular distance 36.7– 50.3 µm.   
 Genital capsule. Pygofer, in lateral view, with ventral posterior margin bulbous, bearing a single row of prominent, triangular teeth (Figs 1 ag, 2 v). Pygofer lobe broadly triangular, short, blunt, small ventral teeth; lobe about half as wide as pygofer (Fig. 1 ag). Plate acutely triangular; apex narrow, pointed, rounded or truncate; 3–5 macrosetae subapically; subbasal lateral margin emarginate, distal, proximal tufts of fine setae (Fig. 2 v); plate 1.5–1.6 times as long as wide. Aedeagal shaft, in lateral view, arising medially from atrium; preatrium rounded; shaft C-shaped, with apex deflected slightly; gonopore elongate, lateral (Figs 3 ae; 4 ac). Style distal part close to anterior medial lobe; apophysis elongate, tapering acutely, ventrolateral teeth (Fig. 5 i). Connective stem triangular, constricted basally, wider than width across arms (Fig. 6 ab).   
 Female. Dimensions. (n = 14) Length: apex of vertex to apex of tegmina 2.5–2.6 mm; apex of vertex to apex of abdomen 2.9–3.1 mm; vertex medially 0.5 mm; vertex next to eye 0.3–0.4 mm; pronotum medially 0.3 mm. Width: head 0.9–1.0 mm; pronotum 0.8–0.9 mm. Ocellar diameter 28.0 µm; ocellocular distance 40.8–55.2 µm.   
 Genitalia. Sternite 7 base rectangular; ligula slightly recessed into base; ligula triangular; apical notch (Fig. 7 bz).   
 Material examined. Holotype male. South Africa, Mpumalanga. Mac Mac Reserve, 25°01ʹS, 30°49ʹE, 1345 m, 13.xi.2005, M. Stiller, DVac grassland (SANC). Paratypes. 26♂, 26♀. Mpumalanga. 26♂, 26♀, same data as holotype (BMNH, INHS, SANC).   
 Remarks. Pravistylus serratus is unique due to the row of teeth ventrally on the pygofer. Modifications to the pygofer or pygofer lobe are not common in species of Pravistylus. The only other species with a modified pygofer lobe are P. scolopygeus (Fig. 1 af) and P. odontopygeus (Fig. 1 y). In P.scolopygeus the pygofer lobe has a long twisted spine on its median ventral margin. In P. odontopygeus the pygofer lobe has a short tooth on its ventromedial margin (Fig. 1 y). To a lesser extent some specimens of P. pollediscus have the medial margin of the pygofer lobe with microtrichia arranged in a pattern. Some specimens of P. mecistoplacus and P. odontiophallus have the ventral margin of the pygofer lobe sclerotized, and sometimes minutely denticulate.   
 The aedeagi of P. scolopygeus (Figs 3 w, 4 u) and P. serratus (Figs 3 ae, 4 ac) are similar, except that the gonopore in P. scolopygeus is much more elongate. The plates of these latter two species are also similar in shape. For P. scolopygeus (Fig. 2 l) the plate is 1.7–1.9 times as long as wide, and in P.serratus (Fig. 2 v) it is 1.5–1.6 times as long as wide. For P. serratus (Fig. 2 v) and P. odontopygeus (Fig. 2 x) the plate shape and dimensions are similar, with the aedeagus differing more distinctly (Figs 3 ae, 3 ah, respectively).
description: Published as part of Stiller, M., 2010, Revision of the Southern African leafhopper genus Pravistylus (Hemiptera, Cicadellidae, Deltocephalinae) 2468, pp. 1-81 in Zootaxa 2468 (1) on pages 45-46, DOI: 10.11646/zootaxa.2468.1.1, http://zenodo.org/record/10094177