312 



UNITED STATES NATIONAL MUSEUM BULLETIN 2 76 



Malacosoma — continued 

 fragilis mus, 164 



fragilis mus form discolorata, 177 

 fragilis perlutea, 123 

 franconicum, 50, 66, 187-190, 

 212-219 (figs., terminalia), 241 

 (figs., adults) 

 incurvum, 169, 5, 6, 20, 21, 23, 24, 

 25, 35, 36, 41, 58, 65, 72, 83 

 (key, egg masses), 87, 96, 104, 

 112, 114, 118 (compared with 

 californicum), 119, 121, 122, 

 123, 125, 126, 127, 128, 135, 

 136, 141, 174, 176, 178, 182, 

 183, 185, 187, 188, 191, 209 

 (map), 212-219 (figs., termi- 

 nalia), 217 (fig.), 221 (figs., 

 eggs), 234, 238 (figs., adults), 

 251 (figs., larvae), 289, 290 



adult males, 169 



male terminalia, 1 70 



adult females, 1 70 



female terminalia, 1 70 



adult diagnosis, 1 7 1 



mature larvae, 171 



larval diagnosis, 171 



egg masses, 1 72 



tents, 172 



cocoons, 172 



food plants, 172 



distribution, 172 



economic importance, 1 73 



possible relationships with 



aspen populations of M. 



californicum, 134 



incurvum aztecum, 183, 8, 23, 71 



(key, males), 75 (key, females), 



80 and 81 (key, larvae), 110, 



176, 177, 209 (map), 212-219 



(figs., terminalia), 221 (fig., 



eggs), 237 (figs., adults), 251 



(figs., larvae) 



adult males, 183 



male terminalia, 183 



adult females, 183 



female terminalia, 1 83 



adult diagnosis, 184 



Malacosoma — continued 



incurvum aztecum — continued 

 mature larvae, 184 

 larval diagnosis, 184 

 egg masses, 184 

 tents, 185 

 cocoons, 185 

 food plants, 185 

 distribution, 185 

 comments, 185 

 specimens examined, 187 

 incurvum discoloratum, 177, 8, 

 23, 71 (key, males), 75 (key, 

 females), 80 (key, larvae), 119, 



120, 121, 122, 125, 126, 135, 

 165, 166, 171, 172, 280 (coll. 

 data), 209 (map), 212-219 

 (figs., terminalia), 238 (figs., 

 adults), 251 (figs., larvae), 295, 

 296, 301 



adult males, 177 



male terminalia, 1 78 



adult females, 1 78 



female terminalia, 1 78 



adult diagnosis, 1 78 



mature larvae, 1 79 



larval diagnosis, 1 79 



c^^ masses, 180 



tents, 180 



cocoons, 181 



food plants, 181 



distribution, 181 



comments, 182 



specimens examined, 182 

 incurvum incui-vum, 173, 8, 23, 72 

 (key, males), 75 (key, females), 

 79 and 81 (key, larvae), 119, 



121, 125, 126, 171, 172, 182, 

 184, 185, 186, 279 (coll. data), 

 209 (map), 212-219 (figs., ter- 

 minalia), 217 (fig.), 221 (fig., 

 eggs), 234, 238 (figs., adults), 

 251 (figs., larvae), 295, 297, 

 298, 299, 301 



adult males, 174 

 male terminalia, 1 74 

 adult females, 1 74 



