The Shipley Collection of Scientific Papers, Том 1641833 |
Из књиге
Резултати 1-3 од 82
Страница 146
... numbers upon these plants and together with the adults may be destroyed . This practice greatly lessens subsequent attacks . Natural Enemies . - Great numbers of the eggs are destroyed by two small internal parasites , Trissolcus ...
... numbers upon these plants and together with the adults may be destroyed . This practice greatly lessens subsequent attacks . Natural Enemies . - Great numbers of the eggs are destroyed by two small internal parasites , Trissolcus ...
Страница 82
... numbers will afterwards be issued in volumes each containing four numbers and amounting to between 400 and 500 pages , with plates and figures . Papers for publication should be sent to Professor GEO . H. F. NUTTALL , F.R.S. , 3 Cranmer ...
... numbers will afterwards be issued in volumes each containing four numbers and amounting to between 400 and 500 pages , with plates and figures . Papers for publication should be sent to Professor GEO . H. F. NUTTALL , F.R.S. , 3 Cranmer ...
Страница 142
... numbers will afterwards be issued in volumes each containing four numbers and amounting to between 400 and 500 pages , with plates and figures . Papers for publication should be sent to Professor GEO . H. F. NUTTALL , F.R.S. , 3 Cranmer ...
... numbers will afterwards be issued in volumes each containing four numbers and amounting to between 400 and 500 pages , with plates and figures . Papers for publication should be sent to Professor GEO . H. F. NUTTALL , F.R.S. , 3 Cranmer ...
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