The Shipley Collection of Scientific Papers, Том 1641833 |
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individual cells from the center to the periphery of the glandular mass . The cells in the main body are sharply defined , being separated from one another by distinct lines of demarcation . Near the margin of the gland it is not so ...
individual cells from the center to the periphery of the glandular mass . The cells in the main body are sharply defined , being separated from one another by distinct lines of demarcation . Near the margin of the gland it is not so ...
Страница 109
... cells are much vacuolated , and the cell boundaries are only to be distinguished with considerable difficulty . Their nuclei are for the most part small and inconspicuous , and are irregularly stellate in form . The protoplasm of the cells ...
... cells are much vacuolated , and the cell boundaries are only to be distinguished with considerable difficulty . Their nuclei are for the most part small and inconspicuous , and are irregularly stellate in form . The protoplasm of the cells ...
Страница 121
... cells ( the retinulae ) . Intervening between the ommatidia and the external cuticle is a layer of but little modified hypodermal cells ( h ) . It is destined to form on the outside the corneal facets of the imaginal eye , and on its ...
... cells ( the retinulae ) . Intervening between the ommatidia and the external cuticle is a layer of but little modified hypodermal cells ( h ) . It is destined to form on the outside the corneal facets of the imaginal eye , and on its ...
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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