85 

 procoxae. There is some overlap in the numbers of visible 



punctures between males and females. 



Variation . Markings vary dramatically in the width on 

 specimens from north to south. Pronotal markings often 

 touch in the middle, becoming stripe-like, leaving 3 pale 

 circles. The width of the elytral stripe varies from 1 to 3 

 strial intervals. Central American specimens have banded 

 legs, an orange elytral epipleural fold, and black epistome. 

 Specimens from Northern Mexico and Arizona have entirely 

 black legs, black epipleural fold, and an orange epistome. 

 The type specimen, which appears to be slightly teneral, has 

 brown legs. 



Variation in mesocoxal line, from parallel to 

 anteriorly divergent, did not correlate with geographic 

 range. Specimens from Arizona and northern Mexico have the 

 metacoxal line short, reaching a quarter of the distance to 

 the posterior angle, or continuous around the coxae. 

 Specimens from southern Mexico and Central America have the 

 metacoxal lines longer, nearly reaching a third of the 

 distance to the posterior angle. 



The prosternal pinch is not present on the holotype. 

 On other specimens this pinch varies from absent to weak but 

 distinct . 



Type . The holotype (original designation) of Ischyrus 

 aleator Boyle label data: "/ Cave Creek, Cochise Co./ 

 Chiricahua Mts., AZ . , 7000ft, June 24, 1927/ J.A.Kusche 



