CICADELLINAE: PART 2. NEW WORLD CICADELLINI 421 
primaries extending almost to apex which is acute or narrowly rounded, an- 
teapical dorsal and ventral margins with a number of small denticles, an- 
teapical ventral margin rectilinear or slightly concave. 
Platygonia occurs in Costa Rica, Panama, New Grenada, Colombia, 
Ecuador, Peru and southeastern Brazil. The genus is related to Tipuana 
Melichar, from which it differs in having a carina at the transition from crown 
to face, in having ocelli located before a line between the anterior eye angles, 
in the flattened or concave clypeus, in having sculpturing on pronotum and 
scutellum, in the truncate style apex, and in having paraphyses. 
The present interpretation of Tettigonia praestantior Fowler is based on a 
male which I compared with the lectotype in the British Museum. The 
genitalia of this specimen agree with figure 345. The lectotype of Tettigonia 
spatulata Signoret, without an abdomen, agrees externally with specimens I 
have identified as that species. The genitalia of the male lectotype of 
Diedrocephala mitra Distant agree with the present interpretation of spatulata. 
Diedrocephala zea Distant is known to me only from the lectotype, a specimen 
without abdomen, metathorax and hindwings. 
SPECIES OF PLATYGONIA 
angrana, n. sp. SE. Brazil. 
detecta, n. sp. Colombia (?). 
ignifera (Walker), 1851b:804 (Ciccus). Colombia, Peru. New combination. 
infulata, n. sp. Ecuador. 
praestantior (Fowler), 1899e:254 (Tettigonia). Costa Rica, Panama. 
spatulata (Signoret), 1854d:722 ( Tettigonia). Costa Rica, Panama, Colombia, Ecua- 
dor. New combination. 
mitra (Distant), 1908b:60 ( Diedrocephala). New synonymy. 
zea (Distant), 1908b:60 ( Diedrocephala). Ecuador. 
KEY TO MALES OF PLATYGONIA 
(P. zea (Distant) is not included) 
1. Aedeagus in lateral view with a ventral process ..............2+2220+000- 3 
Aedeagus in lateral view without a ventral process ...............-..+.:. Z 
2. Aedeagus gradually tapered at apex in lateral view 
infulata, n. sp., page 422 
Aedeagus obliquely truncate apically .......... ignifera (Walker) (fig. 342) 
3. Length less than 7.0 mm (SE. Brazil) ........... angrana, n. sp., page 424 
Length more than 9.0 mm (Central America and Colombia) ........... 4 
4. Crown with median length greater than interocular width ............. 2 
Crown with median length less than interocular width 
praestantior (Fowler) (fig. 345) 
5. Disk of crown convex before ocelli; crown almost entirely black 
detecta, n. sp., page 425 
Disk of crown concave before ocelli; crown black only at lateral margins 
spatulata (Signoret) (fig. 344) 
