256 N. C. AGR. EXP. STA. BUL. 239 
the Moravian Museum with a “Rio Janeiro” label is possibly mislabeled. 
Specimens in the USNM were collected on corn and sugar cane. 
The relationship of Rhopalogonia to other genera is obscure. I have placed it 
in a group of genera related to Dilobopterus Signoret, but the evidence is weak. 
The shape of the head, the styles and connective of the male, and the dorsal 
process of the aedeagus occur in Dzlobopterus, but are not general in that 
genus, and each of these features occurs elsewhere in genera unrelated to each 
other or to Dilobopterus. Rhopalogonia females do not have the second valvulae of 
the ovipositor closely similar to Amblyscartidia, new genus; Dulobopterus; and 
Lissoscarta Stal. The elongate, acute plates of Rhopalogonia, the protuberance of 
the tenth abdominal segment, and the lack of setae on the female pygofer are 
characters which set the genus apart from the foregoing series of genera. 

FIGURE 207.—Rhopalogonia scita (Walker) (specimens from El Valle, Vene- 
zuela; h from lateral view): p, Anal tube from lateral view. 
