The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 26
... egg - laying . It often happens that so many eggs are placed in the canes as to cause considerable loss . Raspberries and blackber- ries receive the most in- jury , though young decid- uous fruit nursery stock is also often severely ...
... egg - laying . It often happens that so many eggs are placed in the canes as to cause considerable loss . Raspberries and blackber- ries receive the most in- jury , though young decid- uous fruit nursery stock is also often severely ...
Страница 15
... eggs been found upon the lateral verticils of leaves . The insect usually stands with the head directed towards the ... eggs ; this has been confirmed by dissecting out the mature eggs from the ovaries . This number may be de ...
... eggs been found upon the lateral verticils of leaves . The insect usually stands with the head directed towards the ... eggs ; this has been confirmed by dissecting out the mature eggs from the ovaries . This number may be de ...
Страница 30
... eggs that may be deposited in a single cocoon may be judged from the fact that in one case eighty - one eggs were counted on a single larva ; in another case forty - seven pupæ and adults were contained in a single cocoon . Five cocoons ...
... eggs that may be deposited in a single cocoon may be judged from the fact that in one case eighty - one eggs were counted on a single larva ; in another case forty - seven pupæ and adults were contained in a single cocoon . Five cocoons ...
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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