56 



cc. With one seta on each side of the anal rise, smaller than those 



of the cremaster Oletlireutes (a) Hubner. 



bb. Setae never present on the anal rise Polyclirosis Ragonot. 



aa. Tenth abdominal segment without spines. 



b. Well-developed setae present on each side of the anal rise. 



c. Maxillary palpi well developed, reaching the proximo-lateral 



angles of the maxillae Oletlireutes (b) Hubner. 



cc. Maxillary palpi short, never reaching the proximo-lateral angles 



of the maxillae * . .Exartema (a) Clemens. 



bb. Without setae on the anal rise Exartema (b) Clemens. 



The following species were examined : 

 Episimus argutamis Clemens 



Oletlireutes (a) niveiguttana Grote, (b) malachitana Zeller 

 Polychrosis sling erlandana Kearfott, viteana Clemens, botrana Schif- 



fermueller 

 Exartema (a) sciotoanum Kearfott, concinnaniim Clemens, nigra- 



num Kearfott, inornatum Clemens, permundanum Clemens 

 Exartema (b) ferriferanum Walker 



Family Tortricidae 



This group is distinguished by its peculiar type of cremaster and 

 the presence of setae on the anal rise. The maxillary palpi are not 

 present in Peronea but are found in Argyrotoxa, where they are 

 shorter in the male than in the female. The maxillae are usually about 

 two fifths the length of the wings, the labial palpi nearly half the 

 length of the maxillae. There are no spines present on the tenth ab- 

 dominal segment, and they are not well developed on the second and 

 third segments. There is always a well-developed cephalic row on the 

 dorsum of the tenth segment, but the caudal one does not extend as far 

 laterad in the male and is usually lacking in the female. In Argyrotoxa 

 the cephalic row of spines on the eighth and ninth segments is on a 

 prominent ridge which can be plainly seen on the lateral margin in 

 dorsal view. There are always two setae present on each side of the 

 anal rise and these are always on the caudal part of the elevation. 

 Figures 41 and 42 show the arrangement of parts in this family and 

 Figure 43 the dehiscence of part of the head, showing the eye-piece. 

 The genera of Tortricidae may be separated by the following table : 



a. Maxillary palpi present in both sexes ; spines of the cephalic row on 

 abdominal segments 7-9 on distinct ridges which show plainly on the 

 lateral margins of the body, the spines extending laterad beyond the 

 spiracles in some segments; setae on the ventral side of cremaster 

 and between cremastral hooks not heavily chitinized and resembling 

 the ordinary body setae Argyrotoxa Stephens. 



