The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 65
... hatch , and this accounts for the large number necessary to pro- duce so many lice for the coming spring . In the eastern states , where the winters are very severe , it is estimated that only one per cent hatch . In California ...
... hatch , and this accounts for the large number necessary to pro- duce so many lice for the coming spring . In the eastern states , where the winters are very severe , it is estimated that only one per cent hatch . In California ...
Страница 198
... hatching . Chrysalids hatch in about two weeks . The adults being strong fliers are able to scatter their broods over large areas . There are several generations a year . Distribution . The caterpillars are to be found in nearly ...
... hatching . Chrysalids hatch in about two weeks . The adults being strong fliers are able to scatter their broods over large areas . There are several generations a year . Distribution . The caterpillars are to be found in nearly ...
Страница 48
... hatches and manages to lay its eggs in the same or other Pachycondyla nests . Undoubtedly the ant is the first to hatch and to leave the cocoon . Now very soon after this occurs , the useless cocoon is always carried by a worker and ...
... hatches and manages to lay its eggs in the same or other Pachycondyla nests . Undoubtedly the ant is the first to hatch and to leave the cocoon . Now very soon after this occurs , the useless cocoon is always carried by a worker and ...
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