The Shipley Collection of Scientific Papers, Том 1641833 |
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... SCALE INSECTS AND TRUE BUGS . This is one of the largest orders of insects as well as one of the most destructive known . There are nearly twenty thousand species . The term Hemiptera comes from the fact that the fore wings of one of ...
... SCALE INSECTS AND TRUE BUGS . This is one of the largest orders of insects as well as one of the most destructive known . There are nearly twenty thousand species . The term Hemiptera comes from the fact that the fore wings of one of ...
Страница 88
... SCALE INSECTS . To the California horticulturist , and especially to the citrus grower , the scale insects are by far the most destructive and persistent pests . More money is spent in combating them than all other insects together ...
... SCALE INSECTS . To the California horticulturist , and especially to the citrus grower , the scale insects are by far the most destructive and persistent pests . More money is spent in combating them than all other insects together ...
Страница 292
GLASS TUBES . Scale insects ( Coccida ) are easily handled and preserved in small glass shell vials , as shown in Fig . 293. Life histories of other insects for exhibition purposes may also be mounted in small or large glass tubes ...
GLASS TUBES . Scale insects ( Coccida ) are easily handled and preserved in small glass shell vials , as shown in Fig . 293. Life histories of other insects for exhibition purposes may also be mounted in small or large glass tubes ...
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