100 SOME INSECTS INJURIOUS TO TRUCK CROPS. 
Page. 
Diabrotica vittata, common injurious species to truck crops 67 
hardiness in comparison with Diabrotica balteata and Dia- 
brotica duodecimpunctata 80 
in southern Texas, injuries, life-history notes, remedies 82-84 
Diacrisia virginica 59-66 
biologic notes 60-62 
damage in Colorado in 1909 59-60 
experiments with arsenicals 63-66 
fungous disease, Botrytis bassiana 61 
not preyed upon by birds 62 
Dill, food plant of Papilio polyxenes 23 
Dioscorea alata, maggots infesting it 90-91 
Disonycha abbreviata, association with Disonycha mellicollis on Amaranthus retro- 
flexus 31-32 
mellicollis, association with Disonycha abbreviata on Amaranthus retro- 
fiexus 31-32 
at Brownsville, Tex., in 1909 31-32 
control methods 32 
description 30-31 
distribution 30-31 
economic status 31 
eggs, comparison with those of Disonycha xanthomelsena. . 30 
injurious occurrence 29-30 
larva, comparison with that of Disonycha xanthomelsena. . 30 
mistaken for Disonycha xanthomelsena 29 
xanthomelsena, Disonycha mellicollis mistaken therefor 29 
eggs, comparison with those of Disonycha mellicollis. . 30 
larva, comparison with that of D'isonycha mellicollis. . 30 
Disparene. (See Arsenate of lead.) 
Dock. (See Rumex.) 
Dolichos atropurpureus, food plant of Diabrotica balteata 77 
Dragonfly enemy of Papilio polyxenes. (See Anax longipes.) 
Dust, road, deterrent against parsnip leaf-miner 13 
Eggplant, food plant of Diabrotica balteata 70, 77 
Diacrisia virginica 62 
Nezara hilaris 86 
Trichobaris trinotata 89 
Elasmopalpus, comparison of moth with that of Etiella zinckenella 27 
Epicauta marginata (see also Blister beetle, margined). 
feeding habits, notes 91 
on asters, brushing as remedy 92 
pennsylvanica, association with Epicauta marginata in injury to chards 
and garden beets. 92 
trichrus on asters, brushing as remedy 92 
vittata, feeding habits 91 
Epitrix subcrinita on potatoes, possible confusion with Psylliodes punctulata ... 37 
Erycus puncticollis. (See Notaris [Erycus] puncticollis.) 
Etiella rubribasella= Etiella zinckenella 26 
schisticolor only a race of Etiella zinckenella 26 
zinckenella 25-28 
comparison of moth with that of corn stalk-borer (Elasmopal- 
pus) 27 
description 25-27 
