138 Annals Entomological Society of America [Vol. IX, 



Genus Copaxa Walker. 



Body tapering at cephalic end; face parts scarcely elevated 

 above the surface of the body; antennae pectinate throughout, 

 the stem of the flagellum slightly elevated above the pecti- 

 nations; glazed eye-piece visible in the female; invaginations 

 for the anterior arms of the tentorium distinct; clypeo-labral 

 suture distinct; maxillae, measured on the meson, about one- 

 seventh the length of the wings; tarsi of the first pair of legs 

 adjacent on the margin in the female, covered by the antennae 

 in the male; second pair of legs not visible; median thoracic 

 line distinct, sometimes elevated on the prothorax, faint on the 

 mesothorax and metathorax; caudal part of mesonotum and 

 metanotum not depressed adjacent to wings; wings with their 

 distal margins slightly elevated above the dorsal surface of the 

 body ; first pair of wings with their anal angles broadly rounded ; 

 second pair of wings visible around the entire dorsal margin 

 of first wing and produced below the anal angle to form a 

 prominent angle opposite the third abdominal spiracle, but not 

 reaching the caudal margin of the fourth abdominal segment; 

 abdominal segments 8 to 10 distinctly segmented, tapering 

 rapidly to form a cone. 



This genus is found in Mexico and southward. The cocoons 

 are brown, composed of two layers and are much like those of 

 Agapema galbina. The outer layer is very thin and coarsely 

 reticulate, usually attached to a leaf. The inner layer is much 

 thicker, finely reticulate, and the cocoon has an opening at the 

 end, with loose fibers for the emergence of the moth. 



Copaxa lavendera Westwood. — Color variable, usually yel- 

 lowish brown to black, marked with darker brown, or dark 

 brown to black, with traces of yellowish brown; face parts with 

 fine, indeterminate longitudinal striations, appendages and 

 wings with indeterminate transverse striations, remainder of 

 body surface with slightly wavy, interrupted ridges, mostly 

 transverse, with distinct furrows between; antennae of male 

 slightly raised above the level of the wings, the length about 

 two and three-quarters times the width, the sides approxi- 

 mately parallel for the greater part of the length, tapering to a 

 point at distal end and lying adjacent on the margin for a 

 distance equal to its width ; antennas of female not raised above 

 the level of the wings, the length three and one-half times the 



