Pravistylus scolophallus, Stiller, 2010

Stiller, M., 2010, Revision of the Southern African leafhopper genus Pravistylus (Hemiptera, Cicadellidae, Deltocephalinae) 2468, Zootaxa 2468 (1), pp. 1-81: 43-44

publication ID

http://doi.org/ 10.11646/zootaxa.2468.1.1

persistent identifier

http://treatment.plazi.org/id/03EFD356-FFF1-FFF9-6CFF-72108E03D4EC

treatment provided by

Felipe

scientific name

Pravistylus scolophallus
status

sp. n.

Pravistylus scolophallus   sp. n.

( Figs 1 ae; 2 as; 3 aj; 4 ah; 5 ab; 6 ah; 7 bu & bv; 8 be)

Diagnosis. Aedeagal preatrium with spine; shaft, lateral view, base short, C-shaped; apex straight, very narrow, spine-like, gonopore medial, dorsal ( Figs 3 aj, 4 ah). Plate medial basal margin lobate, apex sclerotized dorsally, distal medial margin straight, recessed laterad of basal lobe, sclerotized dorsally; lateral margin broadly rounded ( Fig. 2 as). Style distal part far from base ( Fig. 5 ab); dorsal apophysis visible below plate ( Fig. 2 as). Female sternite 7 base rectangular, posterior margin with two paired, delicate processes on either side of medial, shallow notch ( Figs 7 bu & bv).

Etymology. Greek, for the pointed process (skolos) on the preatrium of the aedeagus (phallus).

Male and female. Pale ochraceous; paired, brown longitudinal band on vertex; apex of band on vertex darkened; 3 pairs on pronotum. All cells of tegmina with light brown lining. Hind wing triangular, about one quarter as long as tegmina ( Fig. 8 be).

Male. Dimensions. (n = 3) Length: apex of vertex to apex of tegmina 2.4–2.6 mm; apex of vertex to apex of abdomen 2.7–2.8 mm; vertex medially 0.4–0.5 mm; vertex next to eye 0.3 mm; pronotum medially 0.3 mm. Width: head 0.8 mm; pronotum 0.8 mm. Ocellar diameter 21.6–29.7 µm; ocellocular distance 70.0 µm.

Genital capsule. Pygofer, in lateral view, with ventral, dorsal posterior margins broadly rounded; lobe absent ( Fig. 1 ae). Plate medial basal margin lobate, sclerotized dorsally, distal medial margin straight, recessed laterad of basal lobe, sclerotized dorsally; lateral margin broadly rounded; 5–7 uniseriate macrosetae ( Fig. 2 as); plate 0.8–1.0 times as long as wide. Aedeagus, in lateral view, with shaft arising basally from atrium; preatrium produced into narrow spine; shaft base C-shaped, tapering towards apex; apical half narrow, straight, spine-like, narrower diameter than base of shaft; gonopore dorsomedial, at junction between spine and curved shaft base ( Figs 3 aj, 4 ah). Style distal part far from anterior medial lobe; apophysis uniformly tapering to narrow point; preapical lobe acute; apophysis protruding medially beyond margin of plate ( Fig. 5 ab). Connective stem, arms of about similar length and width ( Fig. 6 ah).

Female. Dimensions. (n = 3) Length: apex of vertex to apex of tegmina 2.6–2.8 mm; apex of vertex to apex of abdomen 3.3–3.4 mm; vertex medially 0.5 mm; vertex next to eye 0.3 mm; pronotum medially 0.3 mm. Width: head 0.8–0.9 mm; pronotum 0.8 mm. Ocellar diameter 28.0 µm; ocellocular distance 80.6–96.7 µm.

Genitalia. Sternite 7 base rectangular, posterior margin with fine tooth-like paired process on either side of small, shallow cup-shaped notch, with notch recessed ( Fig. 7 bv) or superficial ( Fig. 7 bu).

Material examined. Holotype male. South Africa, Western Cape. Wiedouw Farm, base of Gifberg Pass , 31°44ʹS, 18°46ʹE, 120 m, 3.x.2002, M. Stiller, sweeping, low growing vegetation (grass and forbs) in area where bush vegetation was cleared mechanically or by burning ( SANC) GoogleMaps   . Paratypes. 1♂, 3♀. Western Cape   . 1♂, 3♀, same data as holotype ( SANC) GoogleMaps   .

Remarks. This species is characterised by the aedeagus that has the preatrium spinose, the shaft with the apex that is long, narrow and spine-like, the mediodorsal gonopore, and the shape of the female sternite 7. Possibly only two other species show some form of modification to the aedeagus. These are P. caenophallus   and P. odontiophallus   . In P. odontiophallus   the apex of the shaft is sometimes expanded laterally but always with one or the other side bearing small teeth ( Figs 4 k & l). In P. caenophallus   the aedeagal shaft has a medial, dorsal keeled bilobate structure, and the apex is expanded laterad ( Figs 3 ak, 4 ai). Pravistylus bidentidiscus   has a similar structure of the plate ( Fig. 2 ar). In this species the medial apical margin of the plate is concave, with apical and medial teeth, with the style apophysis protruding beyond its margin. All the other species have the lateral or posterior margin of the plate modified or produced or acute, or narrowly or broadly rounded. Species of Platentomus Theron   , are characterised by the bilobate medial margin of the plate, but have the aedeagus with the apex of the shaft modified.

SANC

Agricultural Research Council-Plant Protection Research Institute