Elginus dexteruncus, 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 : 12-13

Elginus dexteruncus sp.n.

( Figs 10–12 , 58 , 85 , 112 , 137 , 162 , 187 , 213 , 239, 240 )

Diagnosis. Aedeagal shaft with apex curved laterally. Plate with posterior margin at 75° to median margin.

Etymology. Latin, dexter, right, and uncus, hook, for aedeagal shaft that is curved to the right.

Colour. Male & female. Vertex without fuscous marks, few tegmina cells with fuscous spots ( Figs 10–12 ).

Dimensions. Male (n = 11). Lengths: apex of vertex to apex of tegmina 2.8–3.1 mm, apex of vertex to apex of abdomen 2.8–3.1 mm; vertex medially 0.5 mm; vertex laterally next to eye 0.3–0.4 mm; pronotum medially 0.3–0.4 mm; scutellum medially 0.3 mm. Maximum widths: head 1.0 mm; pronotum 0.8–0.9 mm; scutellum 0.4–0.5 mm. Ocellus: diameter 25–33 µm; ocellocular distance 39–50 µm.

Genital capsule. Male. Aedeagal shaft deflected laterad in dorsal view; shaft very long, 4.0 times as long as dorsal apodeme; dorsal apodeme short; gonopore ventral, subapical ( Figs 58 , 85 ). Connective as in Fig. 112 . Plate elongate, apex truncate, angled at about 75° to median margin ( Fig. 137 ). Pygofer lobe apex rounded ( Figs 162 , 187 ). Style apophysis narrow, tapering, slightly curved; almost reaching apex of plate; apophysis 0.6 times as long as median arm ( Fig. 213 ).

Genital capsule. Female. Sternite VII elongate, apical margin with notch on short, right-angled process, notch wide, rounded or V-shaped ( Figs 239, 240 ).

Dimensions. Female (n = 10). Lengths: apex of vertex to apex of tegmina 3.0– 3.2 mm, apex of vertex to apex of abdomen 3.2–3.4 mm; vertex medially 0.6 mm; vertex laterally next to eye 0.4 mm; pronotum medially 0.3–0.4 mm; scutellum medially 0.3 mm. Maximum widths: head 1.0– 1.1 mm; pronotum 0.9 mm; scutellum 0.5 mm. Ocellus: diameter 26–36 µm; ocellocular distance 39–48 µm.

Material examined. Holotype male. South Africa, Western Cape. Voëlvlei Dam, Gouda, 33°12ʹ27.6ʺS 19°2ʹ2ʺE, 90 m, 14.xii.2004, M. Stiller ( SANC). Paratypes (10♂, 12♀, 5 nymphs). Western Cape. 10♂, 12♀, 5 nymphs, ibid. holotype, DVac Aristida diffusa subsp. burkei , Cymbopogon marginatus and Pentaschistis barbata subsp. barbata (Poaceae) ( BMNH, SANC).

Remarks. Known only from a single locality. This place has probably been protected from regular fires and agriculture. The species most likely has a wider distribution, as all specimens are sub-macropterous and have normal hind wings. However, most of the surrounding habitats have been transformed into wheat growing areas with little natural grassland remaining. The curved aedeagal shaft bears some resemblance to that of E. falcatus , although the orientation differs, and its distribution differs significantly.

Figures

FIGURES 9–16. Elginus species, habitus views. Fig. 9, E. denticulatus, female; Fig. 10, E. dexteruncus, male; Fig. 11, E. dexteruncus, female; Fig. 12, E. dexteruncus, nymph; Fig. 13, E. eccentricus, male; Fig. 14, E. eccentricus, female dark; Fig. 15, E. eccentricus, female pale; Fig. 16, E. eccentricus, nymph.

FIGURES 51–77. Elginus species, male, aedeagus, dorsal or ventral view. Fig. 51, E. acutus, ventral view; Fig. 52, E. bispinus, dorsal view; Fig. 53, E. cavatus, dorsal view; Fig. 54, E. contradens, dorsal view; Fig. 55, E. cultellus, curved aedeagus, dorsal view; Fig. 56, E. cultellus, straight aedeagus, dorsal view; Fig. 57, E. denticulatus, dorsal view; Fig. 58, E. dexteruncus, dorsal view; Fig. 59, E. eccentricus, dorsal view; Fig. 60, E. extrinsecus, ventral view; Fig. 61, E. falcatus, dorsal view; Fig. 62, E. furcillatus, dorsal view; Fig. 63, E. latus, dorsal view; Fig. 64, E. levilobus, ventral view; Fig. 65, E. malotiensis, dorsal view; Fig. 66, E. matarei, ventral view; Fig. 67, E. minutulus, dorsal view; Fig. 68, E. oriens, dorsal view; Fig. 69, E. recavus, dorsal view; Fig. 70, E. saltus (Naudé), dorsal view; Fig. 71, E. semialatus, with paired process, ventral view; Fig. 72, E. semialatus, single process, ventral view; Fig. 73, E. theroni, dorsal view; Fig. 74, E. tortuosus, dorsal view; Fig. 75, E. tubulus, dorsal view; Fig. 76, E. unispinus, ventral view; Fig. 77, E. vulgaris, dorsal view.

FIGURES 78–104. Elginus species, male, aedeagus, lateral view. Fig. 78, E. acutus; Fig. 79, E. bispinus; Fig. 80, E. cavatus; Fig. 81, E. contradens; Fig. 82, E. cultellus, curved aedeagus; Fig. 83, E. cultellus, straight aedeagus; Fig. 84, E. denticulatus; Fig. 85, E. dexteruncus; Fig. 86, E. eccentricus; Fig. 87, E. extrinsecus; Fig. 88, E. falcatus; Fig. 89, E. furcillatus; Fig. 90, E. latus; Fig. 91, E. levilobus; Fig. 92, E. malotiensis; Fig. 93, E. matarei; Fig. 94, E. minutulus; Fig. 95, E. oriens; Fig. 96, E. recavus; Fig. 97, E. saltus (Naudé); Fig. 98, E. semialatus, with paired process; Fig. 99, E. semialatus, single process; Fig. 100, E. theroni; Fig. 101, E. tortuosus; Fig. 102, E. tubulus; Fig. 103, E. unispinus; Fig. 104, E. vulgaris.

FIGURES 105–130. Elginus species, male, connective, Fig. 105, E. acutus; Fig. 106, E. bispinus; Fig. 107, E. cavatus; Fig. 108, E. contradens; Fig. 109, E. cultellus, curved aedeagus; Fig. 110, E. cultellus, straight aedeagus; Fig. 111, E. denticulatus; Fig. 112, E. dexteruncus; Fig. 113, E. eccentricus; Fig. 114, E. extrinsecus; Fig. 115, E. falcatus; Fig. 116, E. furcillatus; Fig. 117, E. latus; Fig. 118, E. levilobus; Fig. 119, E. malotiensis; Fig. 120, E. matarei; Fig. 121, E. minutulus; Fig. 122, E. oriens; Fig. 123, E. recavus; Fig. 124, E. semialatus, with paired process; Fig. 125, E. semialatus, single process; Fig. 126, E. theroni; Fig. 127, E. tortuosus; Fig. 128, E. tubulus; Fig. 129, E. unispinus; Fig. 130, E. vulgaris.

FIGURES 131–156. Elginus species, male, plate, Fig. 131, E. acutus; Fig. 132, E. bispinus; Fig. 133, E. cavatus; Fig. 134, E. contradens; Fig. 135, E. cultellus; Fig. 136, E. denticulatus; Fig. 137, E. dexteruncus; Fig. 138, E. eccentricus; Fig. 139, E. extrinsecus; Fig. 140, E. falcatus; Fig. 141, E. furcillatus; Fig. 142, E. latus; Fig. 143, E. levilobus; Fig. 144, E. malotiensis; Fig. 145, E. matarei; Fig. 146, E. minutulus; Fig. 147, E. oriens; Fig. 148, E. recavus; Fig. 149, E. saltus (Naudé); Fig. 150, E. semialatus, with paired process; Fig. 151, E. semialatus, single process; Fig. 152, E. theroni; Fig. 153, E. tortuosus; Fig. 154, E. tubulus; Fig. 155, E. unispinus; Fig. 156, E. vulgaris.

FIGURES 157–179. Elginus species, male, pygofer, dorsal view. Fig. 157, E. acutus; Fig. 158, E. cavatus; Fig. 159, E. contradens; Fig. 160, E. cultellus; Fig. 161, E. denticulatus; Fig. 162, E. dexteruncus; Fig. 163, E. eccentricus; Fig. 164, E. extrinsecus; Fig. 165, E. falcatus; Fig. 166, E. furcillatus; Fig. 167, E. latus; Fig. 168, E. levilobus; Fig. 169, malotiensis; Fig. 170, E. matarei; Fig. 171, E. minutulus; Fig. 172, E. oriens; Fig. 173, E. recavus; Fig. 174, E. semialatus, with paired process; Fig. 175, E. theroni; Fig. 176, E. tortuosus; Fig. 177, E. tubulus; Fig. 178, E. unispinus; Fig. 179, E. vulgaris.

FIGURES 180–205. Elginus species, male, pygofer, lateral view. Fig. 180, E. acutus; Fig. 181, E. bispinus; Fig. 182, E. cavatus; Fig. 183, E. contradens; Fig. 184, E. cultellus, curved aedeagus; Fig. 185, E. cultellus, straight aedeagus; Fig. 186, E. denticulatus; Fig. 187, E. dexteruncus; Fig. 188, E. eccentricus; Fig. 189, E. extrinsecus; Fig. 190, E. falcatus; Fig. 191, E. furcillatus; Fig. 192, E. latus; Fig. 193, E. levilobus; Fig. 194, E. malotiensis; Fig. 195, E. matarei; Fig. 196, E. minutulus; Fig. 197, E. oriens; Fig. 198, E. recavus; Fig. 199, E. semialatus, with paired process; Fig. 200, E. semialatus, single process; Fig. 201, E. theroni; Fig. 202, E. tortuosus; Fig. 203, E. tubulus; Fig. 204, E. unispinus; Fig. 205, E. vulgaris.

FIGURES 206–232. Elginus species, male, style, Fig. 206, E. acutus; Fig. 207, E. bispinus; Fig. 208, E. cavatus; Fig. 209, E. contradens; Fig. 210, E. cultellus, curved aedeagus; Fig. 211, E. cultellus, straight aedeagus; Fig. 212, E. denticulatus; Fig. 213, E. dexteruncus; Fig. 214, E. eccentricus; Fig. 215, E. extrinsecus; Fig. 216, E. falcatus; Fig. 217, E. furcillatus; Fig. 218, E. latus; Fig. 219, E. levilobus; Fig. 220, E. malotiensis; Fig. 221, E. matarei; Fig. 222, E. minutulus; Fig. 223, E. oriens; Fig. 224, E. recavus; Fig. 225, E. saltus (Naudé); Fig. 226, E. semialatus, with paired process; Fig. 227, E. semialatus, single process; Fig. 228, E. theroni; Fig. 229, E. tortuosus; Fig. 230, E. tubulus; Fig. 231, E. unispinus; Fig. 232, E. vulgaris.

FIGURES 233–258. Elginus species, female, sternite VII. Fig. 233, E. bispinus; Fig. 234, E. cavatus; Fig. 235, E. contradens; Fig. 236, E. cultellus, associated males with curved aedeagus; Fig. 237, E. cultellus, associated males with straight aedeagus; Fig. 238, E. denticulatus; Fig. 239, E. dexteruncus variant; Fig. 240, E. dexteruncus variant; Fig. 241, E eccentricus; Fig. 242, E. extrinsecus; Fig. 243, E. falcatus; Fig. 244, E. furcillatus; Fig. 245, E. levilobus; Fig. 246, E. malotiensis; Fig. 247, E. matarei; Fig. 248, E. minutulus; Fig. 249, E. oriens; Fig. 250, E. oriens; Fig. 251, E. recavus; Fig. 252, E. saltus (Naudé); Fig. 253, E. semialatus; Fig. 254, E. theroni; Fig. 255, E. tortuosus; Fig. 256, E. tubulus; Fig. 257, E. unispinus; Fig. 258, E. vulgaris.