Vilargus, Theron, 1975

Stiller, M., 2010, Revision of Vilargus Theron (Hemiptera: Cicadellidae: Deltocephalinae) from South Africa, Zootaxa 2674 (1), pp. 1-25 : 4

Key to males of species of Vilargus (females, where known, included).

1. Aedeagus with spine arising ventrally ( Figs 36 , 44 , 69 , 87 ) or laterally ( Figs 53 , 93, 96–98 , 105 ) from base of shaft or from preatrium; plate with rectangular posterior protrusion ( Fig. 56 ), or if without protrusion then truncate ( Figs 90 , 108 ), acutely triangular ( Fig. 99 ) or broadly rounded ( Figs 39 , 47 , 72, 73 )........................................................... 2

- Aedeagus without spine arising from base of shaft, but with apex expanded ( Figs 60, 61 ), gonopore laterally on one side of apex; apex of plate with narrow, short rounded protrusion ( Fig. 64 ); [style ( Fig. 63 ), pygofer ( Fig. 66 ); connective ( Fig. 62 ); female sternite 7 ( Fig. 67 )] ....................................................................... Vilargus lobulicans sp. n.

2. Aedeagal preatrium with long, pointed paraphysis (e.g. Figs 44 , 69 ) .......................................................................... 3

- Aedeagal preatrium without paraphysis, but with shaft with basal or lateral process (e.g. Figs 36 , 52 , 87 , 92, 96 , 104 ) ...................................................................................................................................................................................... 4

3. Aedeagus with preatrium acutely angled to paraphysis ( Fig. 44 ); apex of aedeagal shaft almost reaching apex of paraphysis ( Figs 43, 44 ); paraphysis symmetrical ( Figs 43, 44, 47 ); pygofer with posterior dorsal and ventral angles rectangular ( Fig. 49 ); apophysis of style sometimes extending slightly beyond posterior margin of plate ( Fig. 47 ); female sternite 7 variable, with shallow or deep raised notch flanked by variably long lobes ( Figs 50, 51 ) ................. ........................................................................................................................................... Vilargus budenticans sp. n.

- Aedeagus with preatrium right-angled to paraphysis ( Fig. 69 ); apex of aedeagal shaft reaching half-way into paraphysis ( Figs 68, 69 ); paraphysis asymmetrical ( Figs 68, 69, 72, 73 ), with lateromedial margin produced dorsally; pygofer with dorsoposterior margin with subapical triangular lobe ( Fig. 74 ); apophysis of style not extending beyond posterior margin of plate ( Figs 72, 73 ); female sternite 7 notched ( Figs 77–79 ) ............. Vilargus pumilicans (Naudé)

4. Plate rectangular, medial, posterior and lateral margins more or less right-angled ( Figs 90 , 108 ) .............................. 5

- Plate variable, acutely triangular ( Fig. 99 ), broadly rounded ( Fig. 39 ) or somewhat triangular with narrow truncated apex ( Fig. 56 ) ................................................................................................................................................................ 6

5. Aedeagal shaft in dorsal view arising on midline from atrium ( Fig. 86 ), short, narrow, pointed process arising ventrolaterally subbasally from shaft ( Fig. 87 ), process about half as long as length of shaft; style ( Fig. 89 ); connective ( Fig. 88 ); pygofer ( Fig. 91 ); [female unknown] ...................................................................... Vilargus simulans sp. n.

- Aedeagal shaft in dorsal view arising laterad of midline from atrium ( Fig. 104 ), with parallel-sided process arising from opposite side of atrium ( Fig. 104 ), process with apex expanded, up to two times as long as length of shaft ( Fig. 105 ); style ( Fig. 107 ); connective ( Fig. 106 ); pygofer ( Fig. 110 ); [female sternite 7 ( Figs 111–115 )] .......................... ........................................................................................................................................... Vilargus trunculicans sp. n.

6. Plate acutely triangular, medial and lateral margins straight, convergent ( Fig. 99 ), plate laterally with apex curved or angled dorsad; aedeagus with process parallel-sided, about as long as shaft or half as long as shaft ( Figs 92, 93, 96– 98 ); style ( Fig. 95 ); connective ( Fig. 94 ); pygofer ( Fig. 101, 102 ); female sternite 7 with short, blunt ligula ( Fig. 103 ) ........................................................................................................................................... Vilargus triquetricans sp. n.

- Plate variable, broadly rounded ( Fig. 39 ) or somewhat triangular basally with narrow truncated apex ( Fig. 56 )....... 7

7. Plate posterior margin broadly rounded ( Fig. 39 ); aedeagal shaft with process arising ventrolaterally from base of shaft uniformly tapered, larger than shaft, extending posteriad of shaft ( Figs 35, 36 ); style with dorsal apophysis about 2.5 times longer medially than width across apex, anterior medial lobe short, angle acutely to base ( Fig. 38 ); connective with stem slightly wider than its length and wider the width across arms ( Fig. 36 ); female sternite 7 with narrow, deep U-shaped notch ( Fig. 42 ) ............................................................................... Vilargus bicornicans sp. n.

- Plate basally triangular, caudally apex narrow, truncated ( Fig. 56 ); aedeagal process narrowly triangular, laterobasal, one third as long as length of shaft ( Figs 52, 53 ); style with dorsal apophysis about 3.6 times longer medially than width across apex, anterior medial lobe long, right angled to base ( Fig. 55 ); connective with stem about as long as wide and narrower that width across arms ( Fig. 54 ); female sternite 7 with narrow, V-shaped notch ( Fig. 59 )............ ............................................................................................................................................ Vilargus dentulicans sp. n.

Figures

FIGURES 35–42. Vilargus bicornicans sp. n. Male and female genitalia. 35, aedeagus, dorsally; 36, aedeagus, laterally; 37, connective; 38, style; 39, plate; 40, pygofer, dorsally; 41, pygofer, laterally; 42, female, sternite 7 (scale = 0.1 mm).

FIGURES 43–51. Vilargus budenticans sp. n. Male and female genitalia. 43, aedeagus, dorsally; 44, aedeagus, laterally, mf = membranous fusion, fc = fused connective, p = paraphysis; 45, connective; 46, style; 47, plate; 48, pygofer, dorsally; 49, pygofer, laterally; 50, female, sternite 7; 51, female, sternite 7 (scale = 0.1 mm).

FIGURES 68–85. Vilargus pumilicans sp. n. Male and female genitalia. 68, aedeagus, dorsally; 69, aedeagus, laterally, sf = sclerotized fusion, c = connective, p = paraphysis;; 70, connective; 71, style; 72, plate; 73, plate; 74, pygofer, laterally; 75, anterior abdominal apodeme; 76, posterior abdominal apodeme; 77–85, female. 77–79, sternite 80, valvula 3; 81, valvula 3, ultrastructure; 82, valvula 2; 83, valvula 2, ultrastructure; 85, valvula 1, ultrastructure (scale = 0.1 mm).

FIGURES 86–91. Vilargus simulans sp. n. Male genitalia. 86, aedeagus, ventrally; 87, aedeagus, laterally; 88, connective; 89, style; 90, plate; 91, pygofer, laterally (scale = 0.1 mm).

FIGURES 52–59. Vilargus dentulicans sp. n. Male and female genitalia. 52, aedeagus, dorsally; 53, aedeagus, laterally; 54, connective; 55, style; 56, plate; 57, pygofer, dorsally; 58, pygofer, laterally; 59, female, sternite 7 (scale = 0.1 mm).

FIGURES 92–103. Vilargus triquetricans sp. n. Male and female genitalia. 92, aedeagus, ventrally; 93, aedeagus, laterally; 94, connective; 95, style; 96, aedeagus, ventrally; 97, aedeagus, laterally; 98, aedeagus, laterally; 99, plate; 100, pygofer, dorsally; 101, pygofer, laterally; 103, pygofer, laterally; 103, female, sternite 7 (scale = 0.1 mm).

FIGURES 104–115. Vilargus trunculicans sp. n. Male and female genitalia. 104, aedeagus, ventrally; 105, aedeagus, laterally; 106, connective; 107, style; 108, plate; 109, pygofer, dorsally; 110, pygofer, laterally; 111–115, female, sternite 7 (scale = 0.1 mm).

FIGURES 60–67. Vilargus lobulicans sp. n. Male and female genitalia. 60, aedeagus, dorsally; 61, aedeagus, laterally; 62, connective; 63, style; 64, plate; 65, pygofer, dorsally; 66, pygofer, laterally; 67, female, sternite 7 (scale = 0.1 mm).