The Shipley Collection of Scientific Papers, Volume 2381920 |
From inside the book
Results 1-5 of 100
Page 2
... Head , Northwest Territories , on July 5. He believed it to belong to the European species , Cephus pygmaeus L. , and under 1 Koebele , A. Notes . In U. S. Dept. Agr . Div . Ent . Insect Life , v . 3 , p . 71 , 1890 . 2 Riley , C. V. ...
... Head , Northwest Territories , on July 5. He believed it to belong to the European species , Cephus pygmaeus L. , and under 1 Koebele , A. Notes . In U. S. Dept. Agr . Div . Ent . Insect Life , v . 3 , p . 71 , 1890 . 2 Riley , C. V. ...
Page 7
... heads as they fill . Cephus was found mining wheat near Hettinger in southwestern North Dakota , July 18 , 1917. September 22 , 1917 , infested wheat was found near Mott , 30 miles north of Hettinger . In October of the same year many ...
... heads as they fill . Cephus was found mining wheat near Hettinger in southwestern North Dakota , July 18 , 1917. September 22 , 1917 , infested wheat was found near Mott , 30 miles north of Hettinger . In October of the same year many ...
Page 10
... head being almost transparent and filling one end of the egg sac . The body is looped on itself , the cauda folded beneath the abdomen and extending forward nearly to the head . By the close of the third day the abdominal segments are ...
... head being almost transparent and filling one end of the egg sac . The body is looped on itself , the cauda folded beneath the abdomen and extending forward nearly to the head . By the close of the third day the abdominal segments are ...
Page 11
... head armed with a pair of powerful biting jaws , a weak , slender body , and a most vigorous appetite . It is very active from the start and begins almost at once to feed upon the living parenchymatous tissue by which it is surrounded ...
... head armed with a pair of powerful biting jaws , a weak , slender body , and a most vigorous appetite . It is very active from the start and begins almost at once to feed upon the living parenchymatous tissue by which it is surrounded ...
Page 15
... head up and usually pressed against the barrier at the top , always on the alert to retreat down- ward at any sign of disturbance . It descends by alternately flexing and straightening the body , bracing itself first by the jaws , then ...
... head up and usually pressed against the barrier at the top , always on the alert to retreat down- ward at any sign of disturbance . It descends by alternately flexing and straightening the body , bracing itself first by the jaws , then ...
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.