1086 N. C. AGR. EXP. STA. BUL. 239 
Female abdominal sternum VII emarginate medially. Genital chamber with 
or without sclerites which are weak and poorly delimited when present. 
Ovipositor with second valvulae spear-shaped, without teeth, connected dor- 
sally only by membrane. Pygofer short, covered with sparse microsetae except 
for a few macrosetae near posterior margin. 
Sonesimia occurs only in southern Brazil, Paraguay, Argentina, and Bolivia. 
I have not been able to relate it closely to other genera. According to the 
original description, S. chinat (Costa Lima) feeds on millet and other plants. 
There are a number of microsetae on the apical portion of the hind femur 
of several species of Sonesimia. Towards the apex of the femur these tend to 
become larger, and in some specimens they are not much smaller than those 
used in the femoral setal formula. The first valvulae of the female of S. grandis 
(Walker) are peculiar in that they have a process which extends laterally. 
The identity of Tettigonia grandis Walker rests on a male specimen com- 
pared with the lectotype. Taschenberg’s 7. crucigera is synonymized as a result 
of a dissection of the holotype. The present interpretation of S. grossa 
(Signoret) is based on a male which agrees with Signoret’s original illustra- 
tions. The identity of S. chinatz (Costa Lima) rests on my determination from 
the original description. 
SPECIES OF SONESIMIA 
chinat (Costa Lima), 1963a:121 (Apogonalia). SE. Brazil. New combina 
dimidiata, n. sp. S. Brazil, Argentina. 
grandis (Walker), 1851b:745 (Tettigonia). S. Brazil, Paraguay. New combination. 
crucigera (Taschenberg), 1884a:437 (Tettigonia). New synonymy. 
grossa (Signoret), 1854a:25 (Tettigonia). Bolivia, S. Brazil, Paraguay, Argentina. New 
combination. 
KEY TO SPECIES OF SONESIMIA 
1. Head with transocular width greater than pronotal width 
grossa (Signoret) (fig. tie 
Head with transocular width less than pronotal width .................. 
2. Face with a median black stripe ............-.....0ee 1s ae 3 
Face without a median black stripe. ..........+.«s..:seumee dimidiata, n. sp. 
3. Male with aedeagal shaft concave dorsally through most of length, py- 
gofer not attenuate apically 4t.4\s0.8.. 4 see, & grandis (Walker) (fig. 880) 
Male with aedeagal shaft convex dorsally through most of length, pygo- 
fer attenuate apically <a... 31 e eee china: (Costa Lima) (fig. 878) 
Sonesimia dimidiata, NEW SPECIES 
FiGuRE 879 
Length of male 13.0-13.7 mm, of female 9.5-10.5 mm. Head with median 
length from slightly more than half to more than six-tenths interocular width 
and four-tenths or slightly more than four-tenths transocular width, ocelli 
each closer to adjacent anterior eye angle than to median line of crown, 
medioposterior portion of disk slightly concave. Pronotum with width greater 
