166 



Indiana University Studies 



H. malus 92 

 H. pyg-mseus 91 

 Sierran Zone, Central 

 Andricus incisus 45 

 A. lasius 18 



Heteroecus dasydactyli 89 



H. pacificus 94 



Plagiotrichus annectens 107 



P. atricinctus 117 



P. chrysolepidicola 112 

 Sierran Zone, Southern 



Andricus distinctus 38 



A. fructiformis 12 



A. maculipennis 36 



A. spectabilis 45 



A. sublasius 19 



Diplolepis sierranensis 158 



Disholcaspis simulata 80 



Heteroecus bakeri 86 



H. eriophorus 90 



H. fuscior 98 



H. subpacificus 95 



Plagiotrichus alutaceus 116 



P. compactus 108 



P. diminuens 114 

 Texas 



Andricus austrior 26 



A. melanicus 32 



A. verif actor 15 



Compsodryoxenus pattersoni 49 

 Disholcaspis pattersoni 78 

 Neuroterus evanescens 100 

 Plagiotrichus elongatus 127 



P. rufopleurffi 128 

 P. stellatae 128 

 Trigonaspis ornata 139 

 Utah 



Diplolepis lucida? 57 



D. sculpta 75 



D. tumida 151 



D. utahensis 68 



D. variabilis 74 



D. wasatchensis 153 



D. xerophila 151 

 Vancouveran Zone 



Andricus spongiolus 11 



Cynips mirabilis 50 



Diastrophus kincaidii 53 



Diplolepis bassetti 56 



Disholcaspis vancouverensis 81 



Plagiotrichus garryanse 121 



P. perdens 133 

 Virginia 



Andricus consobrinus 26 



A. operatola 25 



A. operator 23 

 Washington 



Andricus spongiolus 11 



Cynips mirabilis 50 



Diastrophus kincaidii 53 



Diplolepis diverg-ens 70 



D. melanderi 156 

 Wisconsin 



D. multispinosa 148 

 Wyoming 



D. similis? 146 



Index to Biologic Data 



Alternation of generations 9, 13, ] 



21, 105, 140 

 Color characters 9, 31, 150 

 Distribution areas 5, 38, 56, 68, 84, 



115, 152 



Distribution factors 5, 39, 77, 138, 

 159 



Economic importance 133 

 Emergence date factors 34, 60, 94, 

 144, 152 



Host relations 4, 9, 11, 21, 24, 36, 



37, 47, 106, 115, 127 

 Hybrids 99, 119, 121, 126 

 Mortality factors 34, 117, 131 

 Orthog:enesis 143, 149, 152, 159 

 Primitive Cynipidae 59, 104 

 Sex factors 27, 150 

 Sex ratios 22, 69, 73, 143 

 Variation, individual 21, 37, 41, 152 

 Varieties 3, 4, 68, 75, 77, 142 



