CICADELLINAE: PART 2. NEW WORLD CICADELLINI 9 
Additional illustrations were made by the author, by Miss Teresa Fulp, and by 
Mrs. Lily Shen. Some of the illustrations made by the author were inked by Miss 
Gillian M. Day at the British Museum (Natural History), by Miss Patricia 
Thompson, by Miss Fulp or Mrs. Shen. The technique used to prepare the struc- 
tures is discussed in the preceding section. 
The figures in the systematic portion of this work are lettered consistently as 
follows: 
a, anterior dorsum (head, pronotum, and occasionally the scutellum), from dorsal view; 
6, same structures as in a, from lateral view; 
c, male pygofer and plate (setae of plate usually not shown), lateral view; 
d, one male plate, ventral view; 
e, one style and the connective, dorsal view; 
f, aedeagus, lateral view; 
g, aedeagus, caudoventral view; 
h, male paraphysis or paraphyses; 
1, female abdominal sternum VII, ventral view; 
j, female pygofer, lateral view; 
k, ovipositor, second valvula, lateral view, low magnification; 
m, ovipositor, apex of second valvula; 
n, ovipositor, second valvula, dorsal margin near midlength. 
These explanations are not repeated hereafter in the legends to the figures. Ad- 
ditional structures illustrated are labeled with other letters but the letters are not 
used consistently. These structures are explained in the respective legends. 
When the relationship of one of a pair of bilateral structures to its complement 
is important, the location of the median line has been indicated by a broken ver- 
tical line in the illustration. The remarks on the illustrations a and 6 in part 1 
(p. 14) also apply to part 2. 
TRIBE CICADELLINI 
The subfamily Cicadellinae was discussed in Part 1 (pp. 15-17), and the tribe 
Proconiini was treated there. The remaining tribe, Cicadellini, includes those 
leafhoppers of the subfamily in which the knees (femoro-tibial joints) of the 
posterior legs, at rest, nearly always attain the posterior proepimeral margins; in 
which the male plates and pygofer almost always bear macrosetae; in which the 
antennal ledges are seldom protuberant in dorsal view; in which the posterior 
femora are much more flattened than in the Proconiini (where they tend to be 
more nearly square in cross-section); and in which the face is usually not pubes- 
cent. 
The genera of Cicadellini are very much more difficult to place into groups 
than the Proconiini. The males alone present a most difficult problem in 
associating genera into groups with any degree of confidence. For this reason, the 
females were dissected, and their characters were also considered in judging re- 
lationships. The form of the second valvulae of the ovipositor was particularly 
helpful. Unfortunately, females of a number of species were not available, and 
none in some genera, hence the key to genera is restricted to males. 
Groups of similar genera are represented in diagrams in appropriate positions 
in the text below. Occasionally, some genera and groups of genera in one 
