269 



Stridulatory files present on occipital region of heads 



in both males and females. Females have foveate punctures in 

 front of procoxae, covering the surface from coxae to 

 anterior margin (Fig. 12); male prosternal punctures are 

 obscure, not impressed. 



Variation . The dorsal punctation varies in size and 

 distinctiveness from specimen to specimen. 



Specimens examined . A total of 67 specimens, 

 representing 16 collection records, was studied (see 

 Appendix C for specific data) . 



Distribution . Brazil, Venezuela, Panama, and Costa 

 Rica (Fig. 136) . 



Remarks . Ischyrus n. sp . 7 is similar to Ischyrus n. 

 sp . 6 in many characters. Ischyrus n. sp . 6 has an elongate 

 body, lateral pronotal punctures larger than on the disc, 

 and the prosternal plate length = 2 x widths; I. n. sp. 7 

 has a parallel-sided body, pronotal punctures of equal size, 

 and the prosternal plate length = 3 x widths. 



Ischyrus n. sp . 8 



Diagnosis . Characterized by its dull, uniformly 

 orange-brown color with 3 small free spots on each elytron, 

 and the weakly pinched prosternum. 



Description . Length: 5.9-6.6 mm; Width: 3.1-3.5 mm. 

 Body elongate, widest at basal third of elytra; strongly 

 microreticulate, dull; orange-brown with black pattern (Fig. 

 55) . 



