The Shipley Collection of Scientific Papers, Том 1641833 |
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... larva marching alone secretes a thread almost invariably . That of a single larva is very fine , but careful examination of the sand in its track with a lens shows it : even this single thread is strong enough to be lifted for an inch ...
... larva marching alone secretes a thread almost invariably . That of a single larva is very fine , but careful examination of the sand in its track with a lens shows it : even this single thread is strong enough to be lifted for an inch ...
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... larva ; in another case forty - seven pupæ and adults were contained in a single cocoon . Five cocoons examined on May 1 , 1912 , contained 70 , 68 , 69 , 73 and 50 larvæ respectively . The sawfly larvæ in cocoons in which the chalcids ...
... larva ; in another case forty - seven pupæ and adults were contained in a single cocoon . Five cocoons examined on May 1 , 1912 , contained 70 , 68 , 69 , 73 and 50 larvæ respectively . The sawfly larvæ in cocoons in which the chalcids ...
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was provided with a kind of disk , which adhered so tightly that both larvæ could be killed in alcohol without separating . The collar - like larva was broad behind the middle , but tapered anteriorly to a very slender thoracic region ...
was provided with a kind of disk , which adhered so tightly that both larvæ could be killed in alcohol without separating . The collar - like larva was broad behind the middle , but tapered anteriorly to a very slender thoracic region ...
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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