CICADELLINAE: PART 2. NEW WORLD CICADELLINI 53 
approximately as far as apex of connective, without preapical lobe, somewhat 
irregularly narrowed at apex; connective semi-oval with a Y-shaped differen- 
tially sclerotized portion; aedeagus arched slightly ventrally, the apex curved 
slightly dorsally; without processes; paraphyses absent. Female unknown. 
Crown and pronotum bright yellow, a median black stripe on crown ex- 
panded laterally at basal and apical margins; an irregular median longi- 
tudinal marking on pronotum, expanded posteriorly to extend along posterior 
pronotal margin, and a few spots along anterior margin, black; (color of 
scutellum obscured by pins); forewing with costal, humeral, and commissural 
margins broadly bordered with dark, varying from a pattern where the only 
additional color marking is a greenish area in base of clavus (type), to a pat- 
tern with greenish area extending from base to apex of clavus and with thin 
longitudinal green stripe on midcorium which is dark brown; face and 
thoracic pleura black; legs black basally, paler apically. 
Holotype male and one additional male, Coroico, Bolivia (MMB). 
M. vexativa, n. sp., appears to be related to M. cardinula (Osborn) from 
which it differs in its dorsal lobe of the pygofer margin, its lack of a dorsal 
lobe on the male plates, and its shorter styles. 
Mesogonia rondosa, NEW SPECIES 
FicuRE 421, pace 510 
Length of male 7.8-8.0 mm. Head with median length of crown from six- 
tenths to slightly less than seven-tenths interocular width and from slightly 
more than one-third (type) to four-tenths transocular width, ocelli located on 
or slightly before a line between anterior eye angles, each equidistant from an- 
terior eye angle and median line of crown or slightly closer to latter, with a 
shallow concavity arising between ocelli, extending forward and broadening 
behind anterior carina; clypeus with muscle impressions distinct, face pubes- 
cent beneath. Forewing with membrane including all of anteapical and apical 
cells and apical portion of clavus and brachial cells, veins distinct. Other ex- 
ternal structural characters as in M. retrorsa, n. sp. (p. 489). 
Male pygofer very strongly produced, dorsoapical margin subangularly 
rounded, with a few anteapical macrosetae, without processes; plates not ex- 
tending posteriorly nearly as far as pygofer apex, each with a very broad 
strongly convex dorsal lobe extending almost throughout length of plate in 
lateral view, each plate in ventral view gradually tapered from base to apex 
and with numerous microsetae; style extending posteriorly much farther than 
apex of connective, without preapical lobe, apex acute and slightly curved; 
connective subtriangular, with a T-shaped differentially sclerotized portion; 
aedeagus in lateral view with apical half curved ventrally, then slightly 
posterodorsally, without processes; paraphyses absent. Female unknown. 
Crown and pronotum tan, crown with a median mushroom-shaped mark- 
ing, and a marking extending laterally from each ocellus, black; pronotum 
with middle portion, from disk to posterior margin, marked with green of 
varying extent, with a pair of irregular black markings behind inner margin of 
