CICADELLINAE: PART 2. NEW WORLD CICADELLINI 795 
slightly closer to adjacent anterior eye angle than to median line of crown, 
crown with a distinct concavity across ocelli, without sculpturing or setae, 
_ lateral clypeal sutures extending onto crown and attaining ocelli; antennal 
_ ledges not protuberant, in lateral view with anterior margins oblique and con- 
_ vex; clypeus convex or slightly flattened, usually finely granulate medially, 
muscle impressions distinct, transclypeal suture obscure medially, clypellus in 
_ profile with its lower portion more nearly horizontal than remainder of face, 
nite nei beeen 
not or very weakly pubescent apically. 
Thorax with pronotal width less than transocular width of head, lateral 
margins parallel or slightly convergent anteriorly, dorsopleural carinae com- 
plete, posterior margin concave, disk nearly always without sculpturing, 
without pubescence; scutellum not transversely rugulose. Forewing with mem- 
_ brane including all, or almost all of apical cells and extending proximally a 
short distance along costal margin, with three closed anteapical cells of which 
the bases are all proximal to claval apex, the middle one longest, texture 
coriaceous, weakly transversely rugulose; forewings of female in rest position 
exceeding apex of ovipositor. Hindleg with femoral setal formula 2:1:1, first 
tarsomere slightly longer than combined length of more distal tarsomeres and 
with two parallel asymmetrical rows of small setae on plantar surface. 
Male genitalia: Pygofer not strongly produced, posterior margin varying 
from slightly convex to shallowly concave, with numerous macrosetae on 
posterior half of disk, occasionally with interspersed microsetae, pygofer 
| processes present or absent, variable interspecifically when present. Plates 
narrowly triangular, extending posteriorly beyond apex of pygofer, with uni- 
_Seriate macrosetae. Style extending posteriorly beyond apex of connective, 
without preapical lobe. Connective broadly U- or Y-shaped. Aedeagus 
variable interspecifically, asymmetrical with an unpaired basal process, basal 
-apodemes greatly elongate. Paraphyses absent. Abdomen of male with short 
_ but distinct ventral basal apodemes. 
Female abdominal sternum VII moderately produced posteriorly, posterior 
margin obtusely angular or subangular. Ovipositor with second valvulae each 
broadened and bearing primary teeth on dorsal margin in most of length 
_ beyond basal curvature, the primaries quadrate and bearing secondary denti- 
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| 
cles, apex not very acute, with anteapical dorsal and ventral denticles, ventral 
margin concave in toothed portion. Pygofer slightly produced and convex 
apically, with numerous macrosetae of uniform size on apical half. 
All of the species are dull yellow on crown, pronotum, and scutellum, with 
forewings and often posterior portion of pronotum darker. All have black 
spots or lines on the dorsum of the head and thorax. 
Nielsonia occurs in Costa Rica, Panama, and Ecuador. Species are similar in 
appearance to species of Kapateira, new genus, but in the males the pygofer is 
shorter and the connective is longer than in the latter genus, and the aedeagus 
‘Is asymmetrical. The male genitalia of Nielsonia are similar to those of 
Macunolla intorta, n. sp., (p. 803), also, and to those of the new genus 
) Stephanolla. Distinguishing characters are discussed in the treatment of 
| Stephanolla. 
