The Shipley Collection of Scientific Papers, Volume 2381920 |
From inside the book
Results 1-5 of 49
Page 11
... legs being marked by minute , rounded tubercles terminating in a few short bristles . Although the primary excavation made by the larva may extend for a short distance above the egg cell , the general course of the progress is ...
... legs being marked by minute , rounded tubercles terminating in a few short bristles . Although the primary excavation made by the larva may extend for a short distance above the egg cell , the general course of the progress is ...
Page 17
... legs and body darken until they become a lustrous black within the transparent , almost invisible filmy membrane in which they are inclosed . This membrane is often lacking and may occasionally be destroyed by the movements of the pupa ...
... legs and body darken until they become a lustrous black within the transparent , almost invisible filmy membrane in which they are inclosed . This membrane is often lacking and may occasionally be destroyed by the movements of the pupa ...
Page 18
... legs not spread but stretched in line with the body while the body itself is concealed behind the closely folded , smoke - colored wings . The ease with which such a strikingly colored fly , while in this position , can escape ...
... legs not spread but stretched in line with the body while the body itself is concealed behind the closely folded , smoke - colored wings . The ease with which such a strikingly colored fly , while in this position , can escape ...
Page 19
... legs of their rivals . Singularly , very few of the females confined with them are thus mutilated . OVIPOSITION Weather conditions have always been an important factor in con- trolling the oviposition of very many of the Hymenoptera ...
... legs of their rivals . Singularly , very few of the females confined with them are thus mutilated . OVIPOSITION Weather conditions have always been an important factor in con- trolling the oviposition of very many of the Hymenoptera ...
Page 21
... legs straining at the stem , and are held in this position for half a minute or more . This is probably when the egg is deposited , the insect standing practically motionless except for a slight vibration of the antennæ . A laboratory ...
... legs straining at the stem , and are held in this position for half a minute or more . This is probably when the egg is deposited , the insect standing practically motionless except for a slight vibration of the antennæ . A laboratory ...
Common terms and phrases
abdominal segment abundant adults alfalfa weevil Allorhina nitida antennae appear apple Arzama Arzama obliqua attack August average bean beet borers burrow cage Calendra cat-tail cent Cephus Cephus cinctus climatic color Cotinis crop curly-leaf dark brown decora deposited disease dorsal early eggs elytra emerged entered soil Entomology experiments feeding female field fig moth figs flowers foliage food plants Galerucella grass ground grubs habits hatched head hibernation hopperburn inches infested injury insect instar Japanese beetle July July 25 killed large number larvæ leaf leafhopper leaves legs length Mesothoracic metathorax molted nymphs oblonga observed occur orchard oviposition parasites period pest Plate potato prepupae prothorax pupa pupal pupation rainfall region rhizome season seeds serghi setae showing Smyrna species specimens spiracles spray spring stage stem sterilized surface temperature third instar thorax trees tubercles Typha latifolia Utah ventral width wings winter writer yellow
Popular passages
Page 4 - If it consists in whole or in part of a filthy, decomposed, or putrid animal or vegetable substance, or any portion of an animal unfit for food, whether manufactured or not, or if it is the product of a diseased animal, or one that has died otherwise than by slaughter. Sec. 8. That the term
Page 9 - ... determine whether or not it is safe and profitable to add 20 per cent more of the lime-sulphur concentrate to a given amount of water, thus increasing the strength of the summer spray to that extent. In 1913 a proprietary spraying material in powder form, known under the trade name of "Soluble Sulphur," was used at the rate of 2 pounds to 50 gallons of water in combination with one pound of dry arsenate of lead. While this material appeared to be quite effective in scab control that season very...
Page 61 - In order that the ecological relationships of the insect fauna of the cat-tail plant may be better understood, the first part of this paper deals with the ecology of the cat-tail plant. In the second part, the life history and biology of the insect inhabitants of the plant are discussed. This part of the paper has been treated from a systematic point of view, considering the insects under their respective orders, rather than grouping them according to their life habits. In the resume", composing...
Page 16 - FH CHITTENDEN, in charge of truck crop and stored product insect investigations. AD HOPKINS, in charge of forest insect investigations. WD HUNTER, in charge of southern field crop insect investigations. FM WEBSTER, in charge of cereal and forage insect investigations. AL QUAINTANCE, in charge of deciduous fruit insect investigations. EF PHILLIPS, in charge nf bee culture.
Page 23 - Sc. D., In Charge of Truck Crop and Stored Product Insect Investigations.