134 ILLIXOIS BIOLOGICAL MOXOCRAPHS [528 



Explanation of Plate 



Figure 580. Showing the geographic distribution of types and patterns. The 

 first series at the left are world-wide in distribution, being most generalized in 

 Eurasia and North America. The second group of patterns belong to several 

 groups of species but all are characterized by the presence of three spots at the 

 base and along the elytral suture. They are most numerous in Africa and India. 

 The next group shows the relatively rare type with the pattern oblique but in the 

 opposite direction from the slope of the tip of the elytron. The last type is one 

 showing peculiar joinings of markings characteristic of species found chiefly in 

 Indo-Australian region. 



