The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 170
... pupate in cracks or crevices of the bark . Their hiding places are easily located by a loose white web spun over the entrance by the larvæ before pupation takes place ( Fig . 155 ) . Within a week or so the adults emerge and deposit ...
... pupate in cracks or crevices of the bark . Their hiding places are easily located by a loose white web spun over the entrance by the larvæ before pupation takes place ( Fig . 155 ) . Within a week or so the adults emerge and deposit ...
Страница 200
... pupate . Pupæ or Nymphs . The larvæ not having a waxy or exceedingly hairy or spiny covering , usually hang by the tail and pupate with the head downward ( Fig . 189D ) , while the covered ones pupate within the larval skins which give ...
... pupate . Pupæ or Nymphs . The larvæ not having a waxy or exceedingly hairy or spiny covering , usually hang by the tail and pupate with the head downward ( Fig . 189D ) , while the covered ones pupate within the larval skins which give ...
Страница 233
... pupal forms are found in the soil , espe- cially in unplowed pastures and places around fences , ditches , etc ... pupate within their burrows . The winter is passed in the borer , Prionus laticollis Drury . larval stage , pupation ...
... pupal forms are found in the soil , espe- cially in unplowed pastures and places around fences , ditches , etc ... pupate within their burrows . The winter is passed in the borer , Prionus laticollis Drury . larval stage , pupation ...
Чести термини и фразе
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