Diramus khaokus Wang & Zhang

Wang, Yang, Wei, Cong & Zhang, Yalin, 2013, Diramus, a new genus of the leafhopper subfamily Evacanthinae (Hemiptera: Cicadellidae), with description of three new species from Thailand, Zootaxa 3640 (3), pp. 473-478 : 475-476

Diramus khaokus Wang & Zhang , sp. nov.

Figs 1–5 , 16–20 , 31

Description. Body length (including forewing): ɗ, 5.2–5.5mm. Vertex ( Fig. 4 ) mostly blackish ochreous, with transverse large off-white stripe subbasally. Forewing ( Fig. 5 ) mostly nearly dark ochreous, with clavus yellowish green.

Male pygofer ( Figs. 16 , 31 ) with apex somewhat blunt, forming a subdorsal ventrally directed conical process; ventral process short and slender, extended to middle of ventral margin of pygofer. Aedeagus ( Figs 17, 18 ) in lateral view curved dorsad; apical processes strongly curved laterally in ventral view, falcate, forming about one third of circle. Other characteristics as shown in Figs 1–5 , 16–20 , 31 .

Type material. THAILAND: Holotype ɗ (QSBG), Phetchabun, Khao Kho, 246m, 19–26.ix.2006, coll. Somchai Chachumnan & Saink Singtong. Paratypes: 3ɗɗ (UIUC), same data as holotype; 3ɗɗ (UIUC), same data as holotype except collected on 12–19.ix.2006; 3ɗɗ, same data as holotype except collected on 5–12.ix.2006; 2ɗɗ (UIUC), same data as previous except 210m, 12–19.ix.2006; 1ɗ (NWAFU), Lampang Chae Son, 461m, 1– 8.ix.2007, coll. Bumuen Kwunnui & Acharaporn Sukpeng; 1ɗ (NWAFU), Lampang Chae Son, 491m, 31.vii.– 7.viii.2007, coll. Songkrant Jagsu & Apichat Watwanich.

Remarks. This species can be easily recognized by the forewings without any white patches near the costal margin, and the falcate apical processes of the aedeagus (curved laterally, forming about one third of a circle in ventral view).

Etymology. The specific name is derived from the type locality.

Figures

FIGURES 1 – 15. Male, habitus, face, head and forewing. 1 – 5: D. khaokus sp. nov.; 6 – 10: D. nigromaculatus sp. nov.; 11 – 15: D. uncatus sp. nov.

FIGURES 16 – 30. Male genitalia. 16 – 20: D. khaokus sp. nov.; 21 – 25: D. nigromaculatus sp. nov.; 26 – 30: D. uncatus sp. nov.; 16, 21, 26: male pygofer, lateral view; 17, 22, 27: aedeagus, lateral view; 18, 23, 28: aedeagus, ventral view; 19, 24, 29: connective and style, dorsal view; 20, 25, 30: subgenital plate, ventral view.

FIGURES 31 – 33. Male pygofer side. 31: D. khaokus sp. nov.; 32: D. nigromaculatus sp. nov.; 33: D. uncatus sp. nov.