The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 75
... Sawfly ( N. ribesii ) . The female of N. Erichsonii ( Plate IX . , E ) measures 9 mm . ( inch ) in length ; she is black in colour , with a reddish band across the abdomen , and with the legs mostly yellowish . The male insect is very ...
... Sawfly ( N. ribesii ) . The female of N. Erichsonii ( Plate IX . , E ) measures 9 mm . ( inch ) in length ; she is black in colour , with a reddish band across the abdomen , and with the legs mostly yellowish . The male insect is very ...
Страница 20
... sawfly larvæ , even though it may not succumb to the depredations of the sawfly , it is more liable to be attacked by a number of species of bark beetles belonging to the group of Scolytidæ or Ipidæ , the most destructive and deadly of ...
... sawfly larvæ , even though it may not succumb to the depredations of the sawfly , it is more liable to be attacked by a number of species of bark beetles belonging to the group of Scolytidæ or Ipidæ , the most destructive and deadly of ...
Страница 21
... sawfly are of interest as they attack the sawfly in a stage , namely the cocoon stage , in which the insect is safe from most of its enemies . The Field Vole or Meadow Mouse , Microtus ( Arvicola ) agrestis . In November 1907 , it was ...
... sawfly are of interest as they attack the sawfly in a stage , namely the cocoon stage , in which the insect is safe from most of its enemies . The Field Vole or Meadow Mouse , Microtus ( Arvicola ) agrestis . In November 1907 , it was ...
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