INDEX. 
Page. 
zEnoplegimorpIia phytonomi, parasite of alfalfa Tveevil ; 34 
Agelaius phcEniceiLsfortis, 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 T 12-14 
with other bureaus of U. 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 rariaMlis 15 
held in check in old world by natural enemies 15 
hibernation 12 
Incorrectly called Phytonomus murinus 15 
in Utah 1-11 
investigations by Utah Experiment Station 11-12 
of vertebrate enemies 15 
larva. . : 12. 21-22 
larval period 22-23 
less destructive in old world than in United States 15 
means of dissemination (see aZso Alfalfa weevil, diffusion) 12 
migration 25-26 
natural enemies 3,0-41 
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 
