66 THE SUGAR-BEET WIREWORM. 



Page. 



Early planting against sugar-beet wireworm 61 



Elaterids in sugar-beet fields, comparison with Limonius calijornicus 13 



Euphagus cyanocephalus. enemy of Limonius californicits beetles 47 



Flycatcher, ash-throated. (See Mt/iarchus cinerascens cinerascens.) 



Fungous diseases of Limonius californicus 47-48, 49-50 



Grass. Johnson. (See Sorghum hahpense.) 

 Ground-beetles. (See Carabida;.) 



Guano fertilizer against sugar-beet wireworm 61 



Gull, sea. (See Laru^ sp.) 



Insects found with Limonius californicus 12-13 



Johnson grass. (See Sorghum halepense.) 



Kerosene against sugar-beet wireworm 52, 54, 55 



emulsion against sugar-beet wireworm 52, 54-55 



Killdeer. (See Oxyechus vociferus.) 



Lanius ludovicianus gamheli, enemy of Blapstinus sp 46 



Limonius californicus beetles 46, 47 



Larus sp. , enemy of Limonius californicus 48- 



Lead chromate against sugar-beet wireworm 52, 58, 60 



Limonius californicus, adult, ability to withstand unfavorable conditions 40 



activity, beginning of period 33-34 



appearance in spring 33 



cages used in rearing 36, 37 



description 14 



duration of life under varying conditions 37-38 



effect of temperature thereon 39, 40 



emergence 32 



actions thereafter 41^2 



period 32 



endurance when submerged in water 38 



life history and habits 32-42 



mating 40-42 



actions thereafter 41^2 



oviposition 42 



variation 34-35 



adults from emergence to hibernation 42-43 



bibliography 64 



classification 13 



control, natural 46-50 



descriptions of stages 14-16 



distribution 16 



di'^semination 45, 46 



egg, description 14 



length of stage 20 



life hii^tory 18-20 



time and place of dejw.-iition 18-19 



eggs, number and hatching 19-20 



emergence from hibernation gradual 43^4 



enemies and checks 46-50 



foodplants 16-17,35-36 



fungi affecting pupae and eggs 49-50 



habits and life history 1 8-42 



hibernation 43 



"secondarv " 33, 44-i5 



