CICADELLINAE: PART 2. NEW WORLD CICADELLINI 125 
where it forms an angle and extends posteriorly almost to apex of brachial 
cell; costal margin broadly bordered with a black stripe which angles abruptly 
-mesad at its apex at inner apical cell, the transverse portion bordered 
posteriorly by a transverse yellow area, with a black stripe on each wing ex- 
tending from transcommissural stripe at half its length posteromesally to 
black commissural margin at midlength of clavus, enclosing yellow area along 
commissure near apex of scutellum; apical cells smoky subhyaline. Face white 
with clypeus and clypellus entirely, and lora partly, jet black. 
Holotype male, Rurrenabaque, Beni, Bolivia (W. M. Mann), Nov., bearing 
also the label ‘‘Mulford; Bio. Exp.; 1921-22’ and one male topotype 
(USNM). 
_ The male genitalia of D. clypeatus, n. sp., resemble somewhat those of D. 
kmghti, n. sp., differing in the shorter styles, broader connective and unpaired 
paraphyses in clypeatus. 
Dilobopterus errabundus, NEW SPECIES 
Figure 100, pace 138 
Length of male and female 11.0 mm. Head with median length varying 
from four-tenths to slightly less than one-half interocular width and from one- 
fourth to slightly less than one-third transocular width; without a transverse 
concavity before ocelli; antennal ledges with anterior margins obliquely con- 
vex; other head characters as in D. fenestratus, n. sp. Pronotum not transver- 
sely rugulose; forewing with membrane including apical cells and apical por- 
tion of anteapical cells, veins distinct; hindwing with jugal lobe not enlarged. 
Male plates not fused basally, macrosetae biseriate on broadest portion of 
plate; paraphyses asymmetrical, paired, with one of the branches forked, 
other genital characters as in D. knighti, n. sp., except aedeagus which is like 
the present illustration of D. nigrovenosus, n. sp. (fig. 101/). 
Female abdominal sternum as in the present illustration of D. croceus (Met- 
calf) (fig. 1112). 
Color of anterior dorsum as in knighti, except that posterior margin of 
crown is bordered with black and that pronotal black stripe is narrower, not 
extending posteriorly to posterior margin of pronotum. Forewing hyaline to 
translucent orange marked with black; clavus with complete (type) black bor- 
der or with diagonal anterior border interrupted in some specimens; corium 
with longitudinal veins, brachial cell, costal cell in basal half and continuing 
onto outer anteapical cell, and apical cell, black, with a transverse anteapical 
_ subhyaline area across apical cells. Face pale yellow; clypellus entirely black. 
Holotype male, Bogota, Colombia, three additional male and two female 
topotypes (three of the specimens collected by Lindig) (RMS). One male, 
Colombia (OSU). One male, Muzo, Dept. Boyaca, Colombia (MCZ). 
D. errabundus, n. sp., is very closely related to D. nigrovenosus, n. sp., but dif- 
fers in the coloration of the anterior dorsum, the forewings, in the greater ex- 
tent of clypellar dark markings, and in its paraphyses which are described 
above. 
