The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 42
... summer they appear light yellow with the wing covers or elytra mottled with red . As the season advances the color becomes darker until winter it is dark red - this change is due to the increasing brightness of the red markings , which ...
... summer they appear light yellow with the wing covers or elytra mottled with red . As the season advances the color becomes darker until winter it is dark red - this change is due to the increasing brightness of the red markings , which ...
Страница 84
... summer months the young shoots of the host plants are seriously attacked , but by fall all entirely dis- appear . It is not known how the winter is spent . Distribution . Throughout the entire State wherever the food plants grow . Food ...
... summer months the young shoots of the host plants are seriously attacked , but by fall all entirely dis- appear . It is not known how the winter is spent . Distribution . Throughout the entire State wherever the food plants grow . Food ...
Страница 193
... summer and the young upon hatching bore into the canes of the currants and work upon the inner pith during the summer and winter , eventually destroy- ing the bushes . Late in the spring the pupæ are found within the old burrows near an ...
... summer and the young upon hatching bore into the canes of the currants and work upon the inner pith during the summer and winter , eventually destroy- ing the bushes . Late in the spring the pupæ are found within the old burrows near an ...
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