The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 29
... adults only by the small wing pads . Those species having a quiescent pupal stage are characterized by the larvæ going into the ground for pupation and remaining there during the winter , the adult insects emerging in the early spring ...
... adults only by the small wing pads . Those species having a quiescent pupal stage are characterized by the larvæ going into the ground for pupation and remaining there during the winter , the adult insects emerging in the early spring ...
Страница 162
... adult stages , the moths appearing early in the spring and are espe- cially active , laying eggs in May and June in the alfalfa fields . The young larvæ or loopers are plentiful in June , feeding upon the leaves of the plants . In about ...
... adult stages , the moths appearing early in the spring and are espe- cially active , laying eggs in May and June in the alfalfa fields . The young larvæ or loopers are plentiful in June , feeding upon the leaves of the plants . In about ...
Страница 242
... adult female is about one half of an inch . FIG . 239.- Adult male and female of the alfalfa crane - fly , Tipula simplex Doane . ( After Carnes and Newcomer . ) Life History . The small , oval , dark gray eggs are deposited as deeply ...
... adult female is about one half of an inch . FIG . 239.- Adult male and female of the alfalfa crane - fly , Tipula simplex Doane . ( After Carnes and Newcomer . ) Life History . The small , oval , dark gray eggs are deposited as deeply ...
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