CICADELLINAE: PART 2. NEW WORLD CICADELLINI 119 
Holotype male, Colombia (L. Richter), 1941. A pair of specimens, Bogota, 
Colombia, and an additional male from Colombia (RMS). Holotype on in- 
definite loan to USNM from NCS. 
D. knighti, n. sp., is named in honor of W. J. Knight, of the British 
Museum, who has been most helpful in making comparisons with types in 
this genus. The species is closely related to D. nigrovenosus, n. sp., from which 
it may be separated by the shape of the aedeagus in lateral view (compare 
figs. 98f and 101f). 
Dilobopterus nigrovenosus, NEW SPECIES 
FicurE 101, PAGE 138 
Length of male 8.1 mm, of female 8.1-8.5 mm. Head with median length 
slightly more than four-tenths interocular width and slightly less than one- 
third transocular width, ocelli located behind a line between anterior eye 

FIGURES 74, 75.—74, Dilobopterus vicinus (Signoret) (2 from specimen from 
Brazil; remainder from Bolivia). 75, D. laetus (Walker), holotype. 
