CONTENTS. 



Page. 



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 web worm 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 



ILLUSTRATIONS. 



Page. 

 Fig. 4. The imported cabbage webworm (Hellula undalis): Adult, larva, pupa. . 28 



5. The imported cabbage webworm: Wing venation; head and antenna . . 28 



6. Exorista pyste, a parasite of the imported cabbage webworm 31 



7. Small compressed-air sprayer 38 



in 



