VIII SOME INSECTS INJURIOUS TO TRUCK CROPS. 



The leafhoppers of the sugar beet and their relation to the "curly-leaf" con- 

 dition — Continued. Page. 



Other leafhoppers 49 



Eutettix strobi Fitch 49 



Eutettix scitula Ball 49 



Eutettix seminuda Say 50 



Eutettix clarivida Van Duzee 50 



Eutettix insana Ball, E. albida Ball, and E. paupeirulata Ball 50 



Eutettix stricta Ball 50 



Agallia sanguinolenta Prov 51 



Agallia cinerea Osborn and Ball 51 



Agallia bigelovise Baker 51 



Agallia quadripunctata Prov. and A. novella Say 51 



Empoasca sp 51 



Conclusions in regard to "curly-leaf" 52 



The semitropical army worm (Prodenia eridania Cram.). 



F. H. Chittenden and H. M. Russell, '. 53 



Introduction 53 



Descriptive 54 



Origin and distribution 57 



Literature and history 57 



Recent injuries and biologic notes 58 



Early records 62 



Life-cycle periods and generations 62 



Natural enemies 63 



Methods of control 65 



Resume of experiments and conclusions 68 



Summary 69 



Bibliographical list 70 



The hop flea-beetle {Psylliodes punctulata Melsh.) F. H. Chittenden. . 71 



Introductory 71 



Descriptive 72 



Distribution 73 



Recent injuries 73 



Methods of attack, food habits, and generations 76 



Life history and habits 79 



Notes on other species 81 



Local conditions and natural influences 82 



Methods of control 83 



Arsenicals 83 



Contact sprays * 85 



Bordeaux mixture 87 



Mechanical and cultural methods 87 



Literature 91 



Bibliography 91 



Summary 92 



Miscellaneous notes on truck crop insects F. II. Chittenden . . 93 



Successful use of arsenate of lead against the asparagus beetle 93 



A note on the asparagus miner 94 



Injurious occurrence of the pea moth in the United States 95 



A new western root-maggot 95 



Notes on water-cress insects 96 



Index 99 



