298 

 probably from Veracruz or Oaxaca rather than Durango." The 



exact origin of the "Sierra de Durango" specimen is unknown. 



Remarks . This species is similar in color pattern to 

 I. grammicus Gorham and I. nigrolineatus Crotch. It can be 

 separated by having the central elytral marking unbroken. 

 Ischyrus grammicus and I. nigrolineatus have the central 

 elytral marking broken into stripe-like spots. 



Ischyrus n. S£L. 15. 



Diagnosis . Recognized by large triangular central 

 elytral marking, and heart-shaped central pronotal marking, 

 bilobed posteriorly, pointed anteriorly. 



Description . Length 6.2-7.9 mm; Width: 3.2-4.2 mm. 

 Body elongate, widest at basal third of elytra; 

 microreticulate, feebly shining; orange-red with black 

 pattern (Fig. 76) . 



Head black, occasionally with orange-red epistome. 

 Pronotum anteriorly with narrow black margin between eyes; 

 base with black margin on medial half, each end of black 

 margin with a spot; one free lateral spot on each side; disc 

 with a pair of fused spots, connected with anterior margin, 

 appearing like an inverted heart. Scutellum black. Each 

 elytron with black epipleural fold; free subhumeral spot; 

 large, trilobed scutellar spot connected broadly to base and 

 suture; suture margined with black; large triangular central 

 spot, from basal third nearly to apex, widest anteriorly, 

 acute posteriorly at suture, sides undulate. Venter black, 

 except for orange-red lateral prothorax and lateral 



