276 



retracted) . Females with foveate punctures on prosternum in 



front of procoxae, obscured by microreticulation; males 

 lack prosternal punctures. 



Variation . The specimens from Panama have the anterior 

 pronotal angle spot variable in size and distinctiveness, 

 present or absent, and the humeral spot free. The female 

 Brazilian specimen has the anterior pronotal angle spot 

 distinct, sharply delineated from the rest of the pronotum, 

 and the humeral spot connected to the elytral base. 



When the elytra are together, the central mark varies 

 from W- to V-shaped, depending on the extent of the sutural 

 connection . 



Specimens examined . A total of 18 specimens, 

 representing 17 collection records, was studied (see 

 Appendix C for specific data) . 



Distribution . Panama, Venezuela, Trinidad, and Brazil 

 (Fig. 137) . 



Taxonomic notes . The Brazilian specimen may represent 

 a separate taxon. Only additional material and study of 

 male genitalia will solve this question. 



Remarks . Ischyrus n. sp. 9 superficially resembles I. 

 n. sp . 10 in color pattern and body shape. Ischyrus n. sp. 

 9 can be distinguished by the characters mentioned in the 

 diagnosis and the genitalia. 



Ischyrus n. sp. LQ. 



Diagnosis . Recognized by having the pronotum almost 

 entirely black (except for anterior angles) , elytral free 



