32 



Figure 14. Prosternal sexual dimorphism in puncture 



development and lateral expansion. Male Ischyrus 

 scutellaris Gorham [Mexico, Yucatan] prosternum: a.) 

 ventral view, line = 0.60 mm; b.) ventral view, line 

 0.30 mm; c.) lateral view of prosternal expansion, 

 line = 0.12 mm. Female Ischyrus scutellaris Gorham 

 [Mexico, Yucatan] prosternum; d.) ventral view, line 

 0.50 mm; e.) ventral view of prosternal-pronotal 

 epipleural suture, line = 0.17 mm. 



