Insect pests of farm, garden and orchard . ompact and not loose, arepreferred. Meadows and pastures where the grass is closely grazedare much used, while moist or wet ground is generally avoided. In such places the female deposits her eggs in masses of aboutthirty. These are placed about an inch below the surface ina pod-like cavity, which is lined and the eggs are covered by a 96 INSECT PESTS OF FARM, GARDEN AND ORCHARD mucous fluid cxcretetl during From two to five hoursarc required for tliis operation, and an average of three of thesemasses is deposited during a period of from
Insect pests of farm, garden and orchard . ompact and not loose, arepreferred. Meadows and pastures where the grass is closely grazedare much used, while moist or wet ground is generally avoided. In such places the female deposits her eggs in masses of aboutthirty. These are placed about an inch below the surface ina pod-like cavity, which is lined and the eggs are covered by a 96 INSECT PESTS OF FARM, GARDEN AND ORCHARD mucous fluid cxcretetl during From two to five hoursarc required for tliis operation, and an average of three of thesemasses is deposited during a period of from six to eight weeks. As the time of ovipositing varies with the latitude, so thehatching of the eggs occurs from the middle or last of Marchin Texas till the mitldle of May or first of June in Minnesotaand Manitoba. Until after the molt of the first skin, and oftentill after the second or third molt, the young nymphs are con-tent to feed in the immediate vicinity of their birth. Whenthe food Ijecomes scarce they congregate together and in. Fi(i. 03.—Rocky Mountain locusts: a, n, a, females in different positions,ovipositing; b, egg-pod extracted from ground, with end broken open;r, a few eggs lying loose on ground; d, e, show the earth partially removed,to illustrate an egg-mass already in place and one being placed; /showswhere such an egg-mass has been covered up. (After Riley.) solid bodies, sometimes as much as a mile wide, march acrossthe country, tlevouring evciy green crop and weed as they cold or damp weather and at night they collect underrubbish, in stools of grass, etc., and at such times almost seemto have disappeared; but a few hours of sunshine brings themforth, as voracious as ever. When, on account of the immensenumbers assembled together, it becomes impossible for all toobtain green food, the unfortunate ones first clean out theunderbrush and then feed upon the dead leaves and bark oftimber lands, and have often been known to gnaw fences and INSECTS
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisheretcet, bookyear1912
