The Shipley Collection of Scientific Papers, Том 1641833 |
Из књиге
Резултати 1-3 од 94
Страница 185
THE SPRING CANKERWORM . Paleacrita vernata Peck ( Family Geometridæ ) . ( Figs . 171 , 172. ) General Appearance . The larvæ are dark olive - green , brown or nearly black , very slender and about one inch long . Because of their ...
THE SPRING CANKERWORM . Paleacrita vernata Peck ( Family Geometridæ ) . ( Figs . 171 , 172. ) General Appearance . The larvæ are dark olive - green , brown or nearly black , very slender and about one inch long . Because of their ...
Страница 186
... spring to oviposit and any methods adopted to prevent this will reduce subsequent injury by the pest . Bands of adhesive paper or cotton around the trunks have proven effective , while one of tree tanglefoot , about two inches wide ...
... spring to oviposit and any methods adopted to prevent this will reduce subsequent injury by the pest . Bands of adhesive paper or cotton around the trunks have proven effective , while one of tree tanglefoot , about two inches wide ...
Страница 187
... spring forms and work about the same . The adults issue from October to December , or as late as spring , and immediately crawl up the trunks to deposit their eggs . Distribution.Found in the central and northern parts of the State ...
... spring forms and work about the same . The adults issue from October to December , or as late as spring , and immediately crawl up the trunks to deposit their eggs . Distribution.Found in the central and northern parts of the State ...
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