174 U.S. NATIONAL MUSEUM BULLETIN 261 



40. Genus CYRTODISCA Stal 



Figure 163 



Cyrtodisca StM, 1869a:60. Type-species: Tettigonia major Signoret, by monotypy. 



Length 1 7-20 mm. 



Head moderately produced, broad, median length less than inter- 

 ocular width, crown rounded to face, not carinate apically, ocelli 

 located on a line between anterior angles of eyes, each about equidistant 

 between adjacent eye angle and median line, disc with median line 

 impressed, not foveate, with a short longitudinal carina laterad of each 

 ocellus, with a slight M -shaped elevation bordering posterior margin, 

 without setae; antennal ledges distinctly foveate, each with a dorsal 

 carina in lateral aspect, and with anterior margin steeply declivous; 

 clypeus slightly flattened medially, muscle impressions distinct; trans- 

 clypeal suture obsolete; face finely pubescent below; clypellus with 

 contour continuing profile of clypeus. 



Thorax widi pronotal width less than transocular width of head, 

 lateral margins parallel, disc strongly punctate and rugose on posterior 

 two-thirds, without pubescence, posterior margin concave, in lateral 

 aspect with a complete, slightly oblique dorsopleural carina which 

 is curved slighdy ventrally near its anterior end ; scutellum transversely 

 striate on posterior portion. Forewing with membrane including only 

 inner apical cell, veins elevated and distinct, texture of clavus and 

 corium strongly coriaceous, basal half of clavus punctate, apical cells 

 variable, claval veins parallel, with an anteapical plexus of veins in 

 corium and with or without anteapical supernumerary veins to costa 

 near apex, wings of female at rest concealing ovipositor. Hind wing 

 extending almost as far posteriorly as forewing; vein R2+3 entire. Hind- 

 legs at rest with knees not attaining posterior proepimeral margins; 

 femoral setal formula 2:0:0; first tarsomcrc with length exceeding 

 combined length of second and third. 



Male genitalia: Pygofer strongly produced and rounded apically, 

 with numerous dispersed microsetae (occasionally with a few inter- 

 spersed macrosetae), with a pair of processes arising on each ventral 

 margin. Plates separate throughout their length, not extending as far 

 posteriorly as pygofer apex, triangular, with numerous microsetae 

 and interspersed macrosetae. Style extending posteriorly slighdy 

 farther than apex of connective, with an anteapical lobe, apex sub- 

 truncate. Connective Y-shaped, the arn-is widely divergent, stem short 

 and strongly keeled. Aedeagus symmetrical, short, bulbous, curved 

 abruptly dorsally in apical portion, without processes. Paraphyses 

 absent. 



Female abdominal sternum VH strongly produced, its posterior 

 margin shallowly emarginate medially. 



