The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница viii
... apple - tree borer , Chrysobothris femorata . 236 Florida wax scale , Ceroplastes floridensis . 113 Frosted scale , Eulecanium pruinosum . 116 Greedy scale , Aspidiotus camellia__ 127 Green apple aphis , Aphis pomi_ . 70 Leaf - hopper ...
... apple - tree borer , Chrysobothris femorata . 236 Florida wax scale , Ceroplastes floridensis . 113 Frosted scale , Eulecanium pruinosum . 116 Greedy scale , Aspidiotus camellia__ 127 Green apple aphis , Aphis pomi_ . 70 Leaf - hopper ...
Страница 41
THE APPLE LEAF - HOPPER . Empoasca mali LeB . ( Fig . 35. ) General Appearance . - The presence of the insect is made known by the curling and twisting of the infested leaves , especially on nursery stock : it being primarily a nursery ...
THE APPLE LEAF - HOPPER . Empoasca mali LeB . ( Fig . 35. ) General Appearance . - The presence of the insect is made known by the curling and twisting of the infested leaves , especially on nursery stock : it being primarily a nursery ...
Страница 182
... apple - tree tent caterpillar ( M. americana ) in all stages . FIG . 167.- Egg masses of the western apple - tree tent caterpillar . ( Original . ) Life History . The life history is also like that of the eastern species , except that ...
... apple - tree tent caterpillar ( M. americana ) in all stages . FIG . 167.- Egg masses of the western apple - tree tent caterpillar . ( Original . ) Life History . The life history is also like that of the eastern species , except that ...
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abdomen abdominal segment adult antennæ ants aphid Aphis Appearance apple arsenic attacked body breeding brood buds California caterpillars cells cent citrus cocoons colonies color Commissioner cornicles cyanide damage deposited destructive Distribution dorsal early eggs Entomologist erichsonii Essig Family feed femora flies foliage Food Plants fruit fumigation gallons genus green hatch head hibernate History horticultural host inch long infested instabilis ladybird beetle larch Larch Sawfly large numbers larva larvæ lateral leaves legs Linn louse maggots male mealy bug mermithergates mites mosquitoes moth muscles Natural Enemies nest numbers observations Orasema orchards ovipositor P. C. Jr parasites Paris green pest Pheidole plant lice Plate Polyederkrankheit pound pseudogynes pupa pupæ pupal pupate quarantine Raupen sawfly scale insects southern species specimens spiracles spray spring stage summer surface thorax thrips Throughout the entire trees usually ventral winged female winter workers yellow young