VIII PAPEES ON CEEEAL AND FOEAGE INSECTS. 



The sorghum midge — Continued. Page. 



Relation of Johnson grass to the midge problem^ 55 



Natural enemies 55 



Remedial measures 58 



The New Mexico range caterpillar (Hemileuca olivise Ckll.) C. N. Ainslie. . 59 



History and extent of the outbreak in New Mexico 60 



Occurrence of the moths outside of New Mexico 62 



The specific identity of the insect concerned 63 



Description 65 



Life history and habits 69 



The eggs 69 



The larvae ." 73 



The pupae 79 



The moths 82 



Natural enemies 87 



Effects on the range caterpillar of pasturing 93 



Remedial measures 94 



Contributions to a knowledge of the corn root-aphis (Aphis maidi-radicis Forbes) 



R. A. Vickery. . 97 



Distribution 98 



History 98 



Experimental work in the South 100 



Uncultivated food plants 102 



Injury to corn 104 



Relation of ants to the root-aphis 105 



Natural checks 106 



Preventive measures 106 



Injury to cotton 108 



Injury to asters 109 



Other cultivated food plants Ill 



Description and synonymy Ill 



The Erigeron root-aphis (Aphis m iddletoni Thos.) 113 



Uncultivated food plants 114 



Cultivated food plants 115 



Attendant ants 115 



Laboratory and field experiments 116 



The smoky crane-fly ( Tipula infuscata Loew) James A. Eyslop. . 119 



Description 121 



Life history 126 



Natural enemies 128 



Remedial and preventive measures 130 



Larvae of crane-flies as accidental inhabitants of man 131 



Bibliography 132 



The cowpea curculio (Chalcodermus seneus Boh.) Geo. G. Ainslie. . 133 



Published records 134 



Distribution 135 



Food plants 135 



Descriptions 136 



Feeding habits 137 



Habits and life-history records 138 



Seasonal history 143 



Parasites 144 



Remedies "... .......... 146 



Bibliography 146 



Index 147 



