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PAPEES ON CEREAL AND FORAGE INSECTS. 



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TEXT FIGURES. 



Page. 



The timothy stem-borer ( Mordellistena ustulata) : Adult 2 



The timothy stem-borer: Egg 3 



The timothy stem-borer: Larva and details 3 



The timothy stem-borer: Pupa and details 5 



The maize billbug (S phenophorus maidis) : Eggs 16 



The maize billbug: Larva • 16 



Corn plant showing result of attack by the maize billbug 18 



Swamp grass attacked by the maize billbug 18 



The maize billbug: Pupa 19 



The maize billbug: Adult 21 



Map showing distribution of the chinch bug west of the Mississippi 



River, 1911 24 



Corn plant about 2 feet tall, infested by chinch bugs 25 



The chinch bug (Blissus leucopterus): Eggs, larvae, details 26 



The chinch bug: Adult of long-winged form 26 



The chinch bug: Adults covered with "white fungus" (Sporotrichum 



globuliferum) 47 



The ' ' curlew bug " (S phenophorus callosus) 53 



Map showing distribution of the "curlew bug" (S phenophorus callosus) 



and the maize billbug (S phenophorus maidis) 57 



The ' ' curlew bug " : Egg as placed in stem of young corn plant 59 



The "curlew bug": Larva; heads of larvae of "curlew bug" and maize 



billbug 60 



The "curlew bug": Pupa 63 



The ' ' curlew bug ' ' : Eggs, pupa, adult, work in com 65 



False wireworm, Eleodes letcheri vandykei: Adults in characteristic 



attitudes 73 



False wireworm, Eleodes letcheri vandykei: Egg 78 



False wireworm, Eleodes letcheri vandykei: Larva and details 79 



False wireworm, Eleodes letcheri vandykei: Pupa, dorsal and ventral 



aspects 79 



False wireworm, Eleodes letcheri vandykei: Adult 80 



False wireworm, Eleodes pimelioides: Adult, details of larva 81 



The legume pod moth (Etiella zinckenella schisticolor) : Egg 91 



The legume pod moth : Larva and details 91 



The legume pod moth : Pupa 92 



The legume pod moth : Adult 92 



The legume pod moth: Larva feeding in a pod of field pea 93 



The work of the legume pod moth compared with that of the pea weevils 



(Bruchidae) 95 



Planting plan of plats used in investigations of the legume pod moth 



during the season of 1910 96 



Diagram showing maximum and minimum damage done by the legume 



pod moth to varieties of peas commencing to bloom on a given date 



in 1910 98 



Diagram showing maximum and minimum damage done by the legume 



pod moth to varieties in full bloom on a given date in 1910 99 



Diagram showing maximum and minimum damage done by the legume 



pod moth to varieties of peas which ceased to bloom on a given date 



in 1910 -. , 100 



Diagram showing mean percentage of damage done by the legume pod 



moth to varieties of peas in full bloom on a given date in 1910 101 



