CONTENTS. 



Page. . 



The Hawaiian beet webworm {Hymenia fascialis Cram.) H. 0. Marsh. . 1 



Introductory '. 1 



Food plants and injury 2 



Life history and habits 3 



Natural enemies 7 



Experiments with insecticides 7 



Description of the earlier stages H. G. Dyar. . 11 



Appendix F. H. Chittenden. . 12 



Description and synonymy 12 



Distribution 14 



History 14 



Bibliography 15 



The southern beet webworm (Pachyzancla bipunctalis Fab.) . .F. H. Chittenden. . 17 



Injurious occurrences and notes on habits 17 



Descriptive , 19 



The moth 19 



The egg 20 



The larva 20 



The pupa 20 



Distribution 21 



Historical and biological notes 21 



Natural enemies 21 



Associated insects 21 



Remedies ' 22 



Paris green 22 



1 ' Dragging the log " 22 



The imported cabbage webworm {Hellula undalis Yob.). ..F. H. Chittenden 



and E. 0. Marsh 23 



Introduction, spread, and ravages 23 



Description and life-history notes 27 



The moth .' 27 



The egg and oviposition 28 



The newly hatched larva 29 



The full-grown larva 29 



The pupa 29 



Distribution 30 



Food plants 30 



Natural enemies 31 



The imported cabbage webworm in Hawaii 32 



Life history and habits ". 34 



Natural enemies in Hawaii 37 



Experiments with insecticides 38 



Experiment in screening a seed bed 41 



Conclusion , 41 



Recommendations for control 42 



Bibliography 44 



in 



