90 Bulletin of the Brooklyn Entomological Society Voi. viii 



,@ Length 8 mm. or less. A clear spot on outer lower 

 margin of corium. 



A. nitida var. minor Abbott. 

 ® Tegminal lineations confluent into solid black, corium bordered 

 with yellow. 



A. hydatotrephes Kirkaldy. 

 @ Tegminal lineations evident ©. 



© Lines of clavus entire, but little forked or interrupted 



(but see gofci^'to below) . Pronotal lines 6-7 ®. 

 ® Claval lineations like those of corium, broken and 

 more or less confused @. 

 ® Length 6 mm. Tawny, rough surface. Claval lineations 

 broad and entire, in sharp contrast to those of corium. 



A. alternata (Say). 

 ® Length 5 mm. or less ®. 



® Corial lineations interrupted and confluent in two 

 longitudinal seriations. 



A. scabra Abbott. 

 ® Corial lineations like those of clavus, not longitu- 

 dinally seriate (a single vitta toward the center) ; 

 palffi short, 3 times as long as high. 

 A. pectenata Abbott. 

 ® Head conspicuously wider and longer than the flattened pro- 



notum and strongly produced at the angles ®. 

 @ Pronotum convex and longer than the head (if head is as 

 long as the pronotum then the total length is 3^ mm. or 

 less, see bradleyi) @. 



® Metathoracic wings normal ®. 



® Metathoracic wings aborted or rudimentary. Palas 

 broadly joined to tibia, 3 times as long as wide. 

 Coloration variable, lineations much confused. 

 P. buenoi Abbott. 

 ® Pronotal lineations 3 . Corial lineations tri-seriate. 



C. macroceps (Kirkaldy). 

 ® Pronotal lineations 5. Cordial lineations not tri-seriate. 



C. minima Abbott. 

 (10) Pronotal lines more than 9 @. 

 @ Pronotal lines 8 or less @. 

 @ Lineations of pronotiim 9-10; tegmina pale, shiny. 



C. verticalis (Fieber). 



