Elginus tortuosus, Stiller, M., 2009

Stiller, M., 2009, Revision of Elginus Theron (Hemiptera: Cicadellidae: Deltocephalinae) with the description of two new genera and comments on the grassland leafhopper fauna in South Africa, Zootaxa 2135 (1), pp. 1-56: 26-27

publication ID

http://doi.org/ 10.11646/zootaxa.2135.1.1

persistent identifier

http://treatment.plazi.org/id/03BD0C4B-FFA0-D160-FF46-FB4AFE082FED

treatment provided by

Felipe

scientific name

Elginus tortuosus
status

sp.n.

Elginus tortuosus   sp.n.

( Figs 37 View FIGURES 33–40 , 74 View FIGURES 51–77 , 101 View FIGURES 78–104 , 127 View FIGURES 105–130 , 153 View FIGURES 131–156 , 176 View FIGURES 157–179 , 202 View FIGURES 180–205 , 229 View FIGURES 206–232 , 255 View FIGURES 233–258 , 271 View FIGURES 259–273 )

Diagnosis. Aedeagal shaft twisted. Plate elongate, without dorsal tooth and concave apex. Female sternite VII with wide V-shaped notch with short parallel-sided notch at its base.

Etymology. Latin, referring to the twisted aedeagal shaft.

Dimensions. Male (n = 29). Lengths: apex of vertex to apex of tegmina 3.6–3.9 mm, apex of vertex to apex of abdomen 3.3–3.6 mm; vertex medially 0.5–0.6 mm; vertex laterally next to eye 0.3–0.4 mm; pronotum medially 0.4 mm; scutellum medially 0.3–0.4 mm. Maximum widths: head 1.0– 1.1 mm; pronotum 0.8–0.9 mm; scutellum 0.5–0.6 mm. Ocellus: diameter 26–38 µm; ocellocular distance 48–64 µm.

Colour. Male. Fig. 37 View FIGURES 33–40 .

Abdominal apodemes. Male. Fig. 271 View FIGURES 259–273 .

Genital capsule. Male. Aedeagal shaft thin, tubular; long, 1.9 times as long as dorsal apodeme; twisted one-third from base; in lateral view S-shaped; in dorsal view curved laterally; gonopore lateral ( Figs 74 View FIGURES 51–77 , 101 View FIGURES 78–104 ). Connective without stem, as in Fig. 127 View FIGURES 105–130 . Plate apex truncate, concave; medial margins separated by about 15°; setation uniseriate, variable (5–9) ( Fig. 153 View FIGURES 131–156 ). Pygofer lobe broadly rounded ( Figs 176 View FIGURES 157–179 , 202 View FIGURES 180–205 ). Style apophysis straight, with base and mid-section wide, apex acute; almost reaching apex of plate; apophysis 0.9 times as long as median arm ( Fig. 229 View FIGURES 206–232 ).

Dimensions. Female (n = 13). Lengths: apex of vertex to apex of tegmina 3.6–4.1 mm, apex of vertex to apex of abdomen 3.4–3.9 mm; vertex medially 0.6 mm; vertex laterally next to eye 0.4 mm; pronotum medially 0.4 mm; scutellum medially 0.3–0.4 mm. Maximum widths: head 1.1–1.2 mm; pronotum 0.9–1.0 mm; scutellum 0.5–0.6 mm. Ocellus: diameter 26–37 µm; ocellocular distance 52–66 µm.

Genital capsule. Female. Sternite VII margin wide V-shaped, ending in short parallel-sided notch; no pillars between sternite VII and VIII, sometimes sclerotized, paired marking ( Fig. 255 View FIGURES 233–258 ). Third valvula with three macrosetae (38.6x6.4 µm, 38.6x5.2 µm, 30.9x5.2 µm). Second valvula serrate.

Material examined. Holotype male. South Africa, Western Cape. Tradouw Pass , (33°57ʹS 20°42ʹE), 15.xi.1976, J.G. Theron ( SANC) GoogleMaps   . Paratypes (36♂, 14♀). Western Cape   . 10♂, 3♀, Swellendam , (34°02ʹS 20°26ʹE) GoogleMaps   ; 12♂, 4♀, ibid. above, but 11–26.ii.1973 GoogleMaps   ; 14♂, 6♀, ibid. holotype GoogleMaps   ; 1♀, Swellendam , 34°02ʹS 20°26ʹE, 31.i.1980; all J.G. Theron ( BMNH, SANC, USIC) GoogleMaps   .

Remarks. Known from a number of vegetation units of the Fynbos Biome, with one female from Port St John’s suggesting a wider range. The identification of this specimen is based on the characteristic shape of the sternite VII of this species ( Fig. 253 View FIGURES 233–258 ). Mislabeling, however, is also possible. Port St John’s and immediate surrounds fall into a number of vegetation units of the Indian Ocean Coastal Belt and Savanna Biomes ( Mucina and Rutherford, 2006). A similar species is E. denticulatus   that occurs mainly in the Drakensberg Grassland Bioregion of the Grassland Biome. However, disjunct distribution is also found in E. cavatus   , E. furcillatus   and E. levilobus   .

SANC

Agricultural Research Council-Plant Protection Research Institute

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Cicadellidae

Genus

Elginus