261 

 plate semicircular, flat, apical width = 0.5 x basal width; 



base shallowly concave. 



Mesosternum basal width = 2 x mesocoxal line length; 

 coxal lines straight, divergent anteriorly; base sinuate, 

 broadly lobed at middle. Metasternum coxal lines recurved, 

 meet at middle with a shallow tooth; coxal lines extend 0.5 

 distance to posterior lateral angle; sternum with medial 

 punctures fine, few coarse lateral punctures. 



First visible abdominal sternite coxal lines reaching 

 0.33 distance to posterior edge; rounded between metacoxae; 

 lateral punctures slightly larger than medial punctures. 



Male genitalia with median lobe weakly arched, narrowed 

 and apically pointed; internal sac without noticeable 

 sclerotized structures; flagellum short and straight, length 

 = 0.7 x median lobe length (Fig. 128a); base of flagellum 

 straight and swollen, sclerite at base claw-shaped (Fig. 

 128b-d) (1 dissected) . 



Female unknown. 



Presence of stridulatory file on occipital region of 

 head unknown (head retracted) . 



Specimens examined . The only known specimen has the 

 following label data: Panama, Code Prov., El Valle, 14-VI- 

 67, D. M. DeLong & C. A. Triplehorn [1, OSUC] . 



Distribution . Only known from Panama (Fig. 129) . 



Is chyrus n . sp . 6. 



Diagnosis . Characterized by having uniform dark brown 

 color (no color pattern) , elongate body, lateral pronotal 



