134 ILUNOIS BIOLOGICAL MONOGRAPHS [134 



aa. Seoli often wanting, when present ten times as long on mesothorax 

 as on abdominal segments 1, 3, 5 or 6. 

 b. Mesothorax bearing seoli about as long as body is wide. 



Nymphalinae 

 bb. Mesothorax without seoU. Apaturinae 



Genera of Argynninae: 



a. Abdominal seoli over half as long as segments. 



b. Subdorsal prothoracie seoli twice as long as those of abdomen, 

 clavate ; head bigibbous, rounded. Euptoieta 



bb. Subdorsal prothoracie seoli smaller than those of abdomen, not 

 clavate. 

 c. Head armed above with long seoli or short, pointed prominences ; 

 abdominal seoli not longer than those of thorax. 

 d. Seoli of head long, spine-like ; subdorsal pair of prothorax 

 rudimentary-. Agraulis 



dd. Seoli of head short, not spine-like ; subdorsal pair of protho- 

 rax about as long as those of abdomen. Argynnis 

 cc. Head rounded above, bigibbous, not armed with seoli or pointed 

 prominences ; abdominal seoli longer than those of thorax. 



Speyeria 

 aa. Abdominal seoli less than half as long as segments; head rounded, 

 bigibbous; prothoracie seoli sometimes long. Brenthis 



Grenera of Melitaeinae: 



a. Subspiracular seoli present on aU three thoracic segments. 



b. Mediodorsal seoli light in color, others black ; body with numerous 



slender secondary setae. Lemonias 



bb. Mediodorsal seoli black, like the others; body with stout, sparse 



secondary setae. Euphydryas 



aa. Subspiracular scolus present on mesothorax but absent or reduced 



to a single seta on metathorax. 



b. Dorsal seoli stout, sometimes verruca-like, about twice as high as 



broad. Phyciodes 



bb. Dorsal seoli slender, at least three times as high as broad. 



c. Dorsal abdominal seoli not as long as segments, subequal in 

 length to those of metathorax. 

 d. Dorsal seoli of mesothorax and metathorax subequal in size; 

 body striped, not spotted, 

 e. Supraspiracular scolus of segment 8 dorsad and only 

 slightly cephalad of spiracle ; body with conspicuous trans- 

 verse stripes. Cinclidia 

 ee. Supraspiracular scolus of segment 8 cephalad of top of 



