CICADELLINAE : PART I. PROCONIINI 257 



length, not extending as far posteriorly as pygofer apex, each triangular 

 and with numerous evenly distributed microsetae. Style extending 

 much farther posteriorly than apex of connective, without preapical 

 lobe, apex truncate. Connective very small, narrowly Y-shaped, arms 

 subparallel, stem carinate. Aedeagus short, with pair of processes 

 arising at base, each process finely hairy in apical half. Paraphyses 

 absent. 



Female abdominal sternum VII with posterior margin deeply emargi- 

 nate medially. 



Dechacona is known only from the type-species, which occurs in Peru, 

 Paraguay, northern Argentina, and southern Brazil. A specimen 

 labeled "Type" has been studied. Dechacona is similar to Tapajosa 

 Melichar in a number of characters, but differs markedly externally 

 by the pubescence of the scutellum and forewings, in that the forewings 

 at rest do not expose the posterior meron, and in the male genitalia 

 in that the male plates are not fused basally. 



Oncometopia minor Osborn (1926b: 170) of which I have studied the 

 type, is a junior synonym of Z). missionum (Berg), new synonymy. 



55. Genus ACROGONIA Stal 



Figures 247-261 

 AcTogonia St&l, 1869a:67. Type-species: Cicada lateralis Fabricius, 1803 (pre- 

 occupied = Acrogonia ignota, new name, here proposed) by subsequent 



designation of Evans (1947a:158). 

 Pherodes Fowler, I899b:225. Type-species: Pherodes flammeicolor Fowler, by 



monotypy. New synonymy. 

 Orectogonia Melichar, 1926a:345. Type-species: [Tettigonia\ sparsuta Signoret, 



by subsequent designation of China (1938d:184). New synonymy. 

 Astenogonia Melichar, 1926a:345. Type-species: [Cicada] bicolor Fabricius, 



1803, preoccupied, =Capinota nw«ay Metcalf, by subsequent designation 



of China (1938d:184). New synonymy. 

 Sansalvadoria Schroder, 1959a:48. Type-species: S. bimaculata Schroder, which 



is a junior synonym of Tettigonia Jlavoscutellata (Signoret), by monotypy. 



Length 9-14 mm. 



Head strongly produced, median length of crown exceeding inter- 

 ocular width, in some species exceeding transocular width, anterior 

 margin carinate and slightly elevated, ocelli located behind a line 

 between anterior angles of eyes, each approximately equidistant be- 

 tween adjacent eye angle and median line of head, usually without an 

 M -shaped elevation bordering posterior margin, without a longitudinal 

 carina laterad of each ocellus, disc concave in almost all species, mid- 

 line impressed, surface without pubescence; antennal ledges longitu- 

 dinally sulcate, in lateral aspect carinate dorsally in most species, 



260-649—68 18 



