CICADELLINAE: PART 2. NEW WORLD CICADELLINI 323 
without pubescence, transclypeal suture incomplete, clypellus not produced, 
its contour continuing profile of clypeus. 
Thorax with pronotal width greater than transocular width of head, lateral 
margins convergent anteriorly, dorsopleural carinae complete, posterior 
margin concave, disk with or without transverse rugae, not pubescent; 
scutellum not striate behind transverse sulcus. Forewing with or without a 
membrane, veins not very distinct, apical margin slightly concave, with three 
anteapical cells of which the outermost is lenticular and not reaching the 
apical cells, and the middle one is open basally, without an anteapical plexus 
of veins, with only three apical cells of which the second is narrowed apically, 
wing surface without sculpturing; forewings of female in rest position ex- 
ceeding apex of ovipositor. Hindleg with femoral setal formula 2:1:1; length of 
first tarsomere much greater than combined length of two more distal tar- 
someres and with two parallel rows of small setae on plantar surface. 
Male genitalia: Pygofer slightly to moderately produced, posterior margin 
regularly convex, with a number of macrosetae of varying length on posterior 
half of disk, pygofer processes absent. Plates short triangular, with uniseriate 
macrosetae. Style extending posteriorly farther than apex of connective, with 
an anteapical lobe, truncate apically. Connective with arms very short. 
Aedeagus symmetrical, directed ventrally or posteroventrally, slightly expand- 
ed at apex. Paraphyses asymmetrical and variable intraspecifically. 
Female abdominal sternum VII with posterior margin obtusangularly 
emarginate. Dorsal membrane of genital chamber with or without sclerites 
which are usually poorly delimited when present. Ovipositor with second 
valvula expanded beyond basal curvature and bearing dorsal elongate quad- 
rate primary teeth, each of which bears several secondaries, with a short 
minutely denticulate area on dorsal margin just before sharply rounded apex. 
Pygofer with a number of large macrosetae arising submarginally along apical 
and apicoventral margins. 
The genus Diedrocephala is one of a generic group that includes the Melichar 
genera Pachitea, Tipuana, Iragua, Microgoniella, Platygonia, Pamplona; and the 
following new genera treated below: Ladoffa, Soostulus, Palingonalia, Pam- 
plonoidea, Aurogonalia, Medlerola, and Ramosulus. Diedrocephala is distinct from all 
of the others in this group in the venation of the forewing (fig. 262p). 
Specimens belonging to the genus Diedrocephala have been studied from 
Honduras and southern Mexico to the Guianas, Argentina, and Bolivia. Spec- 
imens are brown or black with conspicuous white markings on the median 
line. The markings are quite variable in the type-species. Morphological 
characters have not been found to support the color differences. 
The female lectotype of Cicada variegata Fabricius is illustrated. The male 
genitalia of the lectotype of C. virginea Fabricius are like the specimen from 
Honduras illustrated here, except for slight differences in the aedeagus and 
paraphyses, both of which are illustrated. 
The lectotype of Tettigonia elvina Butler, a teneral male, from “St. Paul” in 
the Amazon region, is one of the most beautiful leafhoppers ever seen by the 
present writer. No additional specimens have come to hand. 
I have not seen types of Tettigonia pulcherrima Blanchard, nor T. typhlocyboides 
Signoret. 
