27 



Figure 10. Prosternal development: a.) ventral and b.) 

 lateral view of Ischyrus aleator Boyle [Mexico, 

 Sonora] prothorax lacking anterior pinch, line = 0.60 

 mm; c.) ventral and d.) lateral view of Ischyrus q. 

 quadripunctatus (Olivier) [USA, Florida] prothorax 

 with weakly developed prosternal keel and pinch, line 

 = 0.60 mm; e.) ventral and f.) lateral view of 

 Ischyrus scutellaris Gorham [Mexico, Yucatan] 

 prothorax with strong keel and pinch, line = 0.40 mm; 

 g.) ventral and h.) lateral view of Ischyrus n. sp. 7 

 [Panama] prothorax with prosternal keel swollen above 

 pinch, line = 0.44 mm. 



