33 



on the meson as at each side so that each half is subquad- 

 rangular in outline ; appendages usually soldered firmly to 

 each other and to the body wall ; body usually ovate in out- 

 line, broadest in the thoracic region and usually strongly 

 depressed ; f ronto-clypeal suture usually visible ; antennae 

 usually moniliform in appearance, the caudal portion al- 

 ways adjacent on the meson, usually for some distance ; if 

 only touching, then the f ronto-clypeal suture is distinct. 



GELECHIOIDEA. 



dd. Mesothoracic wings on the ventral surface of the body at 

 meson rarely extending beyond the caudal margin of the 

 fourth abdominal segment, if beyond, then maxillary palpi 

 never present ; abdominal segments 1-4 or 1-6 rarely longer 

 than the other segments; epicranial suture seldom visible. 



e. Labial palpi usually present and well developed and from 

 one fourth to one fifth the length of the wings, if not vis- 

 ible then the body usually shaped as in Figure 104 ; the 

 abdomen with setae arranged around the scars of larval 

 verrucae, and usually flanged plates on the abdomen and a 

 cremaster present ; or with a more or less dense covering of 

 setae never arranged around larval verrucae, the body 

 never of the shape in Figure 104 and flanged plates never 

 present on the abdomen nor a distinct cremaster. 



f. Labial palpi usually present and well developed and the 

 prothoracic femora usually exposed, or if not, then both 

 prothoracic and mesothoracic legs reaching cephalad to 

 the eye-pieces ; if both labial palpi and prothoracic fem- 

 ora are wanting then the body of the type in Figure 

 104 ; the abdomen with setae arranged around the scars 

 of larval verrucae, flanged plates usually present on the 

 abdominal segments and a distinct cremaster often 

 present; body never with a more or less dense cover- 

 ing of setae, except arranged as mentioned above ; max- 

 illary palpi occasionally present. NOCTUOIDEA 



ff. Labial palpi sometimes present, body never with a cre- 

 master and always with a more or less dense covering 

 of setae which are never arranged around larval ver- 

 rucae ; prothoracic femora never exposed ; maxillary 

 palpi never present. BOMBYCOIDEA. 



ee. Labial palpi never visible, unless represented by small tri- 

 angular or polygonal areas caudad of the labrum; body 

 very seldom with visible setae. 



