Diramus nigromaculatus 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 : 476

Diramus nigromaculatus Wang & Zhang , sp. nov.

Figs 6–10 , 21–25 , 32

Description. Body length (including forewing): ɗ, 5.4–5.6mm. Vertex ( Fig. 9 ) mostly white, with irregular black patch on middle part and posterior margin; clypellus ( Fig. 8 ) dark brown, with off-white near apical margin. Forewing ( Fig. 10 ), mostly nearly dark ochreous, with large white patch near costal margin; clavus marked with large yellowish green patch.

Male pygofer ( Figs. 21 , 32 ) with short, slender ventral process arising near base, just reaching middle of ventral margin. Aedeagus ( Figs 23, 24 ) with paired apical processes extending laterally but somewhat straight in ventral view. Other characteristics as shown in Figs 6–10 , 21–25 , 32 .

Type material. THAILAND: Holotype ɗ (QSBG), Loei, Phu Kradueng, 420m, 26.vi.–1.vii.2008, coll. Thonghuay. Paratypes: 1ɗ (UIUC), Phetchabun, Nam Nao, 868m, 9–16.x.2006, coll. Leng Janteab; 1ɗ (NWAFU), Phetchabun, Khao Kho, 242m, 5–6.xi.2006, coll. Somchai Chachumnan & Saink Singtong.

Remarks. This species can be easily recognized by the following characteristics: 1) vertex predominantly white, marked with a large black patch on disc and at base, respectively; 2) forewing with a large white marking near costal margin; 3) apical processes of aedeagus in ventral view somewhat straight, which is only extended laterally but not curved anteriorly.

Etymology. The specific name refers to the black patch on the vertex.

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.