370 The Moths and Butterflies 



humeral angle of the wing (Fig. 567); 



moths mostly with slender abdomen 



and rather broad delicate fore wings. 



Superfamily GEOMETRINA. 



II. Vein m 2 of fore wings more closely joined 

 to cubitus than to radius, so that cubitus 

 is apparently four-branched. 

 J. Subcosta of hind wings distinct from 

 radius, or the two fused for a very 

 short distance near the base of the 

 wing (Fig. 584). 



K. Day-flying moths that are black 

 with large white or yellow patches 

 on the wings, or with white front 

 wings margined with brown, and 

 having the hind wings pale yellow. 



(Wood-nymph moths.) AGARISTIDJE and PERICOPID^E. 

 KK. Not such moths. 



L. Ocelli absent; antennae pec- 

 tinate. 



(Tussock-moths.) LYMANTRIID.E. 

 LL. Ocelli present or, if absent, 

 with simple antennas. 

 (Owlet-moths.) NOCTUID^:. 

 JJ. Subcosta of the hind wings fused with 

 radius for one-fifth or more of the 

 length of the discal cell. 

 K. Subcosta and radius of hind wings 

 fused entirely or with only the tips 

 separate (Fig. 591). . . ZYG^ENID.E 

 KK. Subcosta and radius of hind wings 

 united for about one-half their 

 length, or more, but usually 

 separating before the apex of the 

 discal cell (Fig. 597)- 

 L. Ocelli present. 



(Tiger-moths.) ARCTIID.E. 

 LL. Ocelli absent. 

 (Footman -moths.) LITHOSIID^E. 



GG. Frenulum absent; the humeral angle of the hind 

 vangs largely expanded and serving as a substitute 

 for the frenulum (Fig. 600). 



H. Cubitus of both wings apparently four-branched 

 (Fig. 600). (Tent-caterpillar moths et al.) 



LASICOCAMPID.E. 



HH. Cubitus of both wings apparently three- 

 branched; robust moths with broad wings (Fig. 

 603). (Giant silkworm-moths.) SATURNIINA. 



The jugate moths include but two families, the Micropterygidas and 

 Hepialidae, both represented by but few species and these rarely met with 



