INDEX. 



Page. 



/Enoplegimorpha phytonomi, parasite of alfalfa weevil 34 



Agelai'us phoeniceus fortii, enemy of alfalfa weevil 40 



Alfalfa (see also Medicago sativa). 



duration of growing which should be allowed in weevil-infested districts. 12 



food plant of alfalfa weevil 1-41 



clover-leaf weevil (Hypera punctata) 15 



hay, reduction in quality caused by alfalfa weevil 30 



varieties experimented with in relation to alfalfa weevil 14 



weevil, adult, description and habits 11-12. 15-17 



allied species introduced from Europe . 9 



appearance of second species in Utah 15 



cocoon, description 12 



cocooning and pupating 23-24 



cooperation of Bureau of Entomology and Utah Experiment 



Station 12-14 



with other bureaus of II. S. Department of Agricul- 

 ture 14-15 



description and seasonal history 15-24 



diffusion 25-26 



distribution in the old world 9 



egg 12. 17-19 



laying period 19-20 



evidence of partial second generation 20-21 



field experiments in destruction 26-30 



first appearance in United States 9-10 



food plants 24 



generally known in old world as Phytonomus variabilis 15 



held in check in old world by natural enemies 15 



hibernation 12 



incorrectly called Phytonomus murinus 15 



in Utah 1-41 



investigations by Utah Experiment Station 11-12 



of vertebrate enemies 15 



larva 12. 2i-22 



larval period 22-23 



less destructive in old world than in United States 15 



means of dissemination (see also Alfalfa weevil, diffusion) 12 



migration 25-26 



natural enemies 30-4] 



oviposition 17 



possible confusion with clover-leaf weevil (Hypera punctata). . . 15 



pupating and cocooning 23-24 



reduction in quality of alfalfa hay due to work 30 



remedies, burning machine 29-30 



cultivation in connection with irrigation 29 



43 



