CICADELLINAE: PART 2. NEW WORLD CICADELLINI a). 
minute secondaries, almost to apex which is acute and with anteapical dorsal 
and ventral denticles. Pygofer with a few small macrosetae near middle of 
disk, a few larger ones located basiventrally, and a more numerous group near 
apex. 
Specimens of Balacha have been examined from Colombia and southeastern 
Brazil, Uruguay, Paraguay, and northern Argentina. Balacha is in the 
Erythrogonia generic group. Similarities to Pegogonia, new genus, are discussed 
in the above treatment of that genus. I have also placed it near Pawiloma, new 
genus, because of similarities in the male genitalia (decurved aedeagal shaft 
with apical processes) to one species, and because of somewhat closer 
similarities in the female (fig. 593) to P. amoena (Walker) (fig. 599) (trans- 
verse apical margin of abdominal VII, similarity in pygofer chaetotaxy, 
narrowed basal portion of second valvulae). Balacha may be associated with 
Sibovra China, also, through the curvature of the aedeagal shaft, restricted area 
of teeth on second valvulae, and unproduced posterior margin of abdominal 
sternum VII, but the relationships are probably not close. Balacha differs from 
both Stbovia and Pawiloma in the more drastic curvature at the aedeagal base 
and in the multiseriate setae on its male plates. 
The present interpretation of Tettigonia distincta Signoret is based on a study 
of the male lectotype, the only specimen I have seen, of that species. I have 
based my interpretation of B. melanocephala (Signoret) on the original illustra- 
tion of the species, and in conformity with a specimen in the Moravian 
Museum determined by Melichar. A specimen of melanocephala collected on 
Isla Vizcaino, Rio Negro, Uruguay, by C. Carbonall (USNM) bears the host 
plant label “‘Eryngium sp.”’. 

FIGURE 594.—Balacha distincta (Signoret), lectotype (A from dorsal view). 
