Index 



[Page numbers of principal entries are in italics. For index of host plants, see 

 page 316; for index of parasites, see page 320.] 



"A" (aspen) population of M. cali- 

 fornicum, 131, 135, 234 (figs., 

 adults), 251 (figs., larvae) 

 accessory glands, 20 

 adults, 34 



abdomen, 37 



color pattern, 37 



diagnosis, 67 



female genitalia, 39, 68 



female terminalia, 39, 218-219 



(figs.) 

 forewing pattern, 36 

 generic characters, 35 

 genitalia, northwestern group, 1 28 

 genitalia, southeastern group, 1 28 

 head, 37 



male genitalia, 38, 68 

 male terminalia, 37, 212-217 



(figs.) 

 morphological characters, 35 

 ovipositor, 39 

 sex ratio, 60 



sexual dimorphism, 34, 37 

 thorax, 37 



wing venation, 37, 67, 210 (fig.) 

 allergic reactions to cocoon powder, 



33,34 

 alpicola, Malacosoma, 187 

 ambisimile, Malacosoma, 6, 52 



(table), 64, 143, 144 

 ambisimile, Malacosoma californi- 

 cum. See Malacosoma californi- 

 cum ambisimile. 

 ambisimilis, Clisiocampa, 142 

 Malacosoma, 7, 143, 144 



americana, Bombyx, 1 1 1 



americana (Fabricius), Clisiocampa, 

 111. 

 Malacosoma, 111, 123 



americana Harris, Clisiocampa, 1 1 1 



americana (Harris), Malacosoma, 

 111, 160 



americanum, Malacosoma. See Mala- 

 cosoma americanum. 



anita, Malacosoma disstria ab., 85 

 Malacosoma disstria form, 85 



anterior subdorsal spots, 45, 210 (fig.) 



Artace, 67 



aspen, defoliation, 11, 129, 242 (figs.) 

 outbreaks, 9, 10 



aspen populations of M. californicum, 

 130, 134, 182, 253, 234 (figs., 

 adults), 251 (figs., larvae), pos- 

 sible relationships with M. 

 incurvum, 134, 182 



astriata, Malacosoma disstria ab., 85 

 Malacosoma disstria form, 85 



austrinum, Malacosoma constrictum. 

 See Malacosoma constrictum 

 austrinum. 



azteca, Clisiocampa, 183, 185, 186 

 Malacosoma fragilis, 183 



aztecum, Malacosoma, 185, 186 



aztecum, Malacosoma incurvum. See 

 Malacosoma incurvum aztecum. 



"B" (brush) population of M. cali- 

 fornicum, 131 



"BS" (brush-specks) population of M. 

 californicum, 131, 135 



303 



