289 

 medial punctures fine, few coarse lateral punctures obscured 



by strong microreticulation. 



First visible abdominal sternite with coxal lines 

 reaching 0.5 distance to posterior edge; broadly rounded 

 between metacoxae; coarse punctures distributed across 

 sternite . 



Male genitalia with median lobe weakly arched, apically 

 rounded; internal sac with pair of dark patches near median 

 lobe; flagellum swollen on basal 0.5, length = 1.6 x median 

 lobe length (Fig. 140a); base of flagellum straight, 

 sclerite at base elongate, thickened at connection to 

 flagellum (Fig. 140b-d) (1 dissected) . 



Female unknown. 



Presence of stridulatory files on occipital region of 

 head unknown (head retracted) . 



Specimens examined . Known only from one specimen, 

 label data: Mexico, Oaxaca, 10 mi. N Matias Romaro, 3-VTI- 

 1975, L. E. Watrous [1, CUIC] . 



Distribution . Known only from Mexico (Fig. 139) . 



Remarks . Ischyrus n. sp . 12 superficially resembles I. 

 elegantulus, I. scutellaris, and I. chacojae . It can be 

 distinguished from these by the elongate, stripe-like, 

 lateral and central elytral spots. 



Ischyrus n. sp . 13 



Diagnosis . Recognized by having 4 free pronotal spots 

 in transverse row, large free central elytral spot on each 



