The Shipley Collection of Scientific Papers, Volume 2381920 |
From inside the book
Results 6-10 of 100
Page 20
... female intent on oviposition . Arriving at the apex of the stem , after a care- ful survey of its condition , she frequently makes an elaborate toilet , preening herself most care- fully , until she is in perfect condition . She then ...
... female intent on oviposition . Arriving at the apex of the stem , after a care- ful survey of its condition , she frequently makes an elaborate toilet , preening herself most care- fully , until she is in perfect condition . She then ...
Page 21
... female manipulating her saws . Close observa- tion did not annoy her in the least when the lens was carefully handled , and she paid no attention to the proximity of the onlooker . Under the closest scrutiny it is impossible to ...
... female manipulating her saws . Close observa- tion did not annoy her in the least when the lens was carefully handled , and she paid no attention to the proximity of the onlooker . Under the closest scrutiny it is impossible to ...
Page 22
... ; femora usually mostly yellow ; face and scutellum of female usually black but occasionally with yellow spots .. . cinctus Norton . NATURAL CONTROL In the usual scheme of things an undue 22 BULLETIN 841 , U. S. DEPARTMENT OF AGRICULTURE .
... ; femora usually mostly yellow ; face and scutellum of female usually black but occasionally with yellow spots .. . cinctus Norton . NATURAL CONTROL In the usual scheme of things an undue 22 BULLETIN 841 , U. S. DEPARTMENT OF AGRICULTURE .
Page 27
... female 10 mm . Head large with prominent eyes ; three ocelli near summit . Antennæ inserted on front nearly opposite middle of compound eyes , and composed of 19 or 20 segments . Wings transparent , iridescent , somewhat smoky , with ...
... female 10 mm . Head large with prominent eyes ; three ocelli near summit . Antennæ inserted on front nearly opposite middle of compound eyes , and composed of 19 or 20 segments . Wings transparent , iridescent , somewhat smoky , with ...
Page 21
... female genitalia . Fig . 2. Typical larvae . Figs . 3 , 4 and 5. Variation in color and pattern of larvae . Fig . 6. Stem of beet leaf with epidermis partly rolled back to show position of eggs . Fig . 7. Eggs magnified . Fig . 8. Eggs ...
... female genitalia . Fig . 2. Typical larvae . Figs . 3 , 4 and 5. Variation in color and pattern of larvae . Fig . 6. Stem of beet leaf with epidermis partly rolled back to show position of eggs . Fig . 7. Eggs magnified . Fig . 8. Eggs ...
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.