12 



U.S. NATIONAL MUSEUM BULLETIN 280 



10. 



11. 



12. 



Forewlng 



x= ground darker posterior to cell, at least at base 



0= ground not darker posterior to cell 

 Forewing 



x=soine or all veins white traced 



o= without white tracing on veins 

 Forewing, transverse posterior line 



x= present 



* = represented by dots 



o= absent 

 Labial palpi 



p=porrect 



a= ascending 

 Maxillary palpi 



x= reaching frons or nearly so 



o= small, not approaching frons 

 Male antennae 



1= laminate 



S= serrate 



ss=subserrate 

 Gnathos of male genitalia 



a = with apical process 



l=with pair of subapical processes 



o== without special processes 

 Aedeagus, number of cornuti in vesica 



The use of two symbols separated by a comma indicates two characters appear- 

 ing with about equal frequency. A symbol in parentheses indicates a character 

 appearing less frequently than its alternative. 



Table 1. — Summary of characters found to be the most useful in distinguishing 



species of Peoria* 



*See explanation on preceding pages. 



