264 

 130a) ; base of flagellum straight, sclerite at base elongate 



ring-shaped (Fig. 130b-d) (12 dissected) . 



Female genitalia with spermathecal head kidney-shaped 

 to cone-shaped; tail narrow, weakly curved with swollen end 

 (Fig. 130e) (4 dissected) . 



Presence of stridulatory files on occipital region of 

 head unknown (heads retracted) . Females have foveate 

 punctures in front of procoxae, covering the surface from 

 coxae to anterior margin. Males lack these punctures or, at 

 most, have a few punctures located near the procoxae. 



Variation . Specimens from South America are more 

 elongate (narrower) and duller (with stronger 

 microreticulations) than the Central American specimens. 

 The amount and strength of microreticulation varies 

 tremendously across the geographic range of this species. 



Specimens examined . A total of 21 specimens, 

 representing 21 collection records, was studied (see 

 Appendix C for specific data) . 



Distribution . Bolivia, Brazil, and Central America 

 (Fig. 135) . 



Remarks . See Remarks under Ischyrus n. sp . 7. 



Ischyrus n. ££_. 7 



Diagnosis . Characterized by having uniform dark brown 

 color (no color pattern) , parallel-sided body, pronotal 

 punctures uniform in size, labial palp terminal segment 

 rounded or squared (length = width) , prosternal plate length 

 = 3 x width, and 8 complete elytral striae. 



