LEPIDOPTEKA OF NEW YORK AND NEIGHBORING STATES 387 



5. No seta; on anal rise; spiracles at the bottom of deep pit?. 



33. Polychrosis. 

 4. Last segment without spines. 



5. Well-developed setae on each side of anal rise. 



6. Maxillary palpi reaching maxilla- 29. Olethreutes in part. 



6. Maxillary palpi short, not reaching maxilla-. .31. Cymolomia in part. 



5. No set* on anal rise 31. Cymolomia in part. 



3. Cremaster curved ventral, the posterior angles ending in prominent 



hooks; second segment of abdomen with anterior row of spines 



absent, and posterior weak; set of caudal rise attached farther back. 



4. Maxillary palpi present; anterior spines of segments seven to nine on 



distinct ridges which show on lateral margin of body, the spines on 



some segments extending below spiracles 3S. Argyrotoxa. 



4. Maxillary palpi absent externally; anterior spines of segment nine not 



on distinct ridges, the spines not extending as low as spiracles; setae 



on ventral side of cremaster short and heavily chitinized . . 39. Peronea. 



2. Ninth segment of abdomen with a few scattered spines, in male; no setae 



on anal rise ; cremaster nearly always longer than broad ; last segment 



never with spines. 



3. Segmental membranes showing prominent dark brown spines scattered 



over a light brown surface. 



4. Cremaster much longer than broad, not flattened. 

 5. With four setae at end of cremaster. 



6. Anterior spines of segment two of abdomen weak in male and 

 absent in female; head without an anterior projection. 



41. Harmologa. 

 G. Anterior spines of segment two of abdomen well developed ; head 



often with an anterior projection. 44. Arcbips in part. 



5. Two setse at end of eremaster 34. Sparganothis (group Cenopis). 



4. Cremaster broader than long, flattened 30. Phaecasiopbora. 



3. Conjunctiva smooth and evenly colored. 



4. Cremaster longer than broad, not flattened; palpi considerably "more 



than half as long as maxilla 34. Sparganothis. 



5. Cremastral setae flattened; anterior spines of second segment of 



abdomen wanting in female group Platynota. 



5. Cremastral setae not flattened; anterior spines of segment two present 



in female . . group Epagoge. 



4. Cremaster broader than long, distinctly flattened; palpi not more than 

 half a* long as maxilla. . . .44. Archips in part. 



Subfamily EUCOSMINJE 

 iGraphvlithintE, Epiblemince. Olethrcutinte} 



This subfamily appears to represent a fairly marked group, though defined 'by 

 no single character at any stage. The genera are in part ill-defined, or distin- 

 guished mainly by genitalic characters revealed only by dissection. Heinrich's 

 recent study (United States National Museum. Bulletin 123) has been followed, 

 but externally visible characters have been used as far as possible. In some 

 rases it has been necessary to treat two genera as a unit for the sake of the 

 specific key. 



Valves strongly chitinized : with narrow basal articulation, articulating with 

 the juxta: inner face of valve chitinized except at base; anellu* consisting of a 

 triangular plate with an external central arm supporting the afdneagus. Larva with 

 s*"tar i and iii of ninth segment of abdomen normally on a single plate. 



