14. Genus Echthrodelphax R. Perkins, 1903

Echthrodelphax R. Perkins 1903: 36; Kieffer in Kieffer & Marshall 1906: 489, 493; Kieffer 1914b: 16; Richards 1939: 188; Chandra 1980: 192; Olmi 1984: 1140; 1993b: 78, 79; 1995g: 5; 1996a: 179; 1998a: 57; 1999: 220; He & Xu 2002: 300; Moya-Raygoza & Olmi 2010: 99; Xu et al. 2013: 341; Olmi & Virla 2014: 339; Olmi & Xu 2015: 148.

Pterogonatopus Abdul-Nour 1976: 275 (synonymized by Olmi 1984); type species: Pterogonatopus hortusensis Abdul-Nour 1976, by monotypy.

Type species. Echthrodelphax fairchildii R. Perkins 1903, by monotypy.

Diagnosis. ♀: fully winged (Figs 162D, 165A, B); rarely brachypterous (only in one specimen of E. rufus Olmi 1984 from China, Guangdong, Yunjishan Nature Reserve); palpal formula 3/2, 4/2, 5/2, 5/3, or 6/3; antenna with ADOs; pronotum crossed by strong transverse furrow (Fig. 162D); notauli complete (Figs 165A, B); enlarged claw with one subapical tooth and one row of lamellae (Figs 166A, D); protarsomere 5 with less than 15 medial lamellae (Figs 166A, D); tibial spurs 1/0/1. ♂: fully winged (Figs 165C, D); head with distinct complete occipital carina; oc- ciput concave; temple present; palpal formula 3/2, 4/2, 5/2, 5/3, or 6/3; tibial spurs 1/1/2.

Distribution. Worldwide.

Hosts. Delphacidae (Guglielmino & Olmi 1997, 2006; Guglielmino et al. 2013).

World species. 15 species are known, two in the Afrotropical region.