The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 65
... winged females . The apterous and winged females of the succeeding genera- tions are those most usually observed in the orchards and cause the greatest amount of damage . A brief descriptions of each is as follows : Wingless Female ...
... winged females . The apterous and winged females of the succeeding genera- tions are those most usually observed in the orchards and cause the greatest amount of damage . A brief descriptions of each is as follows : Wingless Female ...
Страница 80
... winged viviparous female ; B , adult apterous viviparous female ; C , nymph of winged female ; 1-3 , antenna of winged female ; 4 , cornicle ( honey tube ) of winged female ; 5 , cornicle of apterous female ; 6 , style ; 7 , anal plate ...
... winged viviparous female ; B , adult apterous viviparous female ; C , nymph of winged female ; 1-3 , antenna of winged female ; 4 , cornicle ( honey tube ) of winged female ; 5 , cornicle of apterous female ; 6 , style ; 7 , anal plate ...
Страница
... female . B , Apterous female antenna . C , Cornicle of alate female ... Winged females commence to appear towards the end of June , and go on until ... winged female of Macrosiphum ribicola with black cornicles as this insect ...
... female . B , Apterous female antenna . C , Cornicle of alate female ... Winged females commence to appear towards the end of June , and go on until ... winged female of Macrosiphum ribicola with black cornicles as this insect ...
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