The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 6
... foliage . On the apple the galls remain the color of the leaves . The younger shoots suffer most . The mites are ... foliage as well as ophyes pyri Pgst . ( U. S. Dept. Agrel ) the stems of the leaves and fruit . On the foliage of ...
... foliage . On the apple the galls remain the color of the leaves . The younger shoots suffer most . The mites are ... foliage as well as ophyes pyri Pgst . ( U. S. Dept. Agrel ) the stems of the leaves and fruit . On the foliage of ...
Страница 42
... foliage by extracting the juices from the leaves with the sharp beaks . There are two broods a year - winter and summer . The adults of the former hibernate and begin feeding upon the first foliage in the spring . During May they begin ...
... foliage by extracting the juices from the leaves with the sharp beaks . There are two broods a year - winter and summer . The adults of the former hibernate and begin feeding upon the first foliage in the spring . During May they begin ...
Страница 230
... foliage . Through- out the entire summer they continue as foliage destroyers and do much damage . They also act as carriers of the bacterial wilt disease of cucumbers . Distribution . Throughout the State . Not as common as Diabrotica ...
... foliage . Through- out the entire summer they continue as foliage destroyers and do much damage . They also act as carriers of the bacterial wilt disease of cucumbers . Distribution . Throughout the State . Not as common as Diabrotica ...
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