HOW TO KNOW THE IMMATURE INSECTS 



5b. Head exposed; body with primary setae and strong incisures.. . .6 



6a. Setae iv and v distant on abdominal segments; prolegs present. 

 Fig. 417 rregeticuJa) Family INCURVARIIDAE 





About 300 species have been described. The caterpil- 

 lars of the Adelinae are case^beorers and are known as 

 fairy moths, while that of the Proxodoxinae are borers 

 in seeds and stems of Yucca and other Liliaceae. As 

 used here this includes McDunnough's superfamily IN- 

 CURVAROIDEA. 



Fig. 417. Setal 

 map Of on ab- 

 dominal s e g - 

 ment. 



6b. Setae iv and v adjacent; prolegs absent 

 Fig. 418 



A few GELECHIIDAE 



7a. 



Fig. 418. a, Sitotroga cerealelio 

 Oliv.; b, setal map of an abdomin- 

 al segment. 



The members of this large fam- 

 ily vary rather widely in habits. 

 Some are gall makers, others de- 

 structive to stored cereals and 

 still others attack the fruit of liv- 

 ing plants. 



Body spindle-shaped; head with closed front (separated from the 



vertex by the epicrania). 



Fig. 419 Family INCURVARIIDAE 



The larvae are known as needle 

 miners and leave a characteristic 

 pattern in leaves. The adults are 

 exceedingly small. 



Fig. 419. a, Maple case bearer, Pora- 

 clemensio ocerifoliello Fitch; b, ceph- 

 alic aspect of head, showing the 

 closed front. 



151 



