The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 66
... ( Linn . ) . Mr. Keller informed me that the " leather - jacket " grubs were very destructive to the roots of tobacco plants in the spring and early summer , especially in the neighbourhood of rank pastures where the parent crane - flies ...
... ( Linn . ) . Mr. Keller informed me that the " leather - jacket " grubs were very destructive to the roots of tobacco plants in the spring and early summer , especially in the neighbourhood of rank pastures where the parent crane - flies ...
Страница 207
... Linn . ) is a favorite host . It also feeds upon young scale insects . THE BLOOD - RED LADYBIRD BEETLE . Cycloneda sanguinea ( Linn . ) . ( Fig . 196. ) General Appearance . The adults are about three sixteenths of an inch long and ...
... Linn . ) is a favorite host . It also feeds upon young scale insects . THE BLOOD - RED LADYBIRD BEETLE . Cycloneda sanguinea ( Linn . ) . ( Fig . 196. ) General Appearance . The adults are about three sixteenths of an inch long and ...
Страница 226
... Linn . ( Family Chrysomelidæ ) . ( Fig . 226. ) General Appearance . The adult beetles are slightly less than one fourth of an inch in length and very slender . The color is metallic bluish - black with red thorax marked with black dots ...
... Linn . ( Family Chrysomelidæ ) . ( Fig . 226. ) General Appearance . The adult beetles are slightly less than one fourth of an inch in length and very slender . The color is metallic bluish - black with red thorax marked with black dots ...
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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