Annual report of the Board of Control of the New York Agricultural Experiment Station . similarin structure as well as habits, sometimes places two eggs through oneopening, but drills two chambers at a slight angle with each other,places an egg in each and then seals the single opening with a barkpellet. 948 Popular Editions of Station Bulletins of the The third species of economic importance, the striped tree cricket,prefers for egg deposition plants with a central pith, like raspberry,blackberry, and certain weeds, while their punctures are commonlocally in elder, grape, sumac and willow. Th
Annual report of the Board of Control of the New York Agricultural Experiment Station . similarin structure as well as habits, sometimes places two eggs through oneopening, but drills two chambers at a slight angle with each other,places an egg in each and then seals the single opening with a barkpellet. 948 Popular Editions of Station Bulletins of the The third species of economic importance, the striped tree cricket,prefers for egg deposition plants with a central pith, like raspberry,blackberry, and certain weeds, while their punctures are commonlocally in elder, grape, sumac and willow. This species, unlike theothers, places its eggs in long rows, one above the other, and thepunctures are so numerous that the stems frequently break at thepoints punctured. This is particularly true of the raspberry, andmakes the cricket a pest of serious economic importance under someconditions. The female cricket may lay from one to a dozen or more eggs ina night and continue the process every night or with occasionalintermissions until from twenty-five to seventy-five eggs are Fig. 31.— Snowy Tree , Egg punctures and cankers in apple wood, (X 1§); b, egg in raspberry (X 2\);c, egg in apple bark (X 15); d, egg cap (X 50); e, spicule of egg cap (X 500). The eggs are much longer than wide, are etched over most of thesurface with cross-hatched scratches, and each has a cap coveredwith minute mound-like or teat-like projections. The size and shapeof the cap differs with the different species and serves as a means ofidentification. The nymphs of the tree crickets begin to emerge from the eggsduring early June, and the hatching process is a most interestingone. When the egg batches, the cap at the outer end breaks off,leaving its trace on the head of the emerging nymph in the shape of Xew York Agricultural Experiment Station. 949 a projecting watery lump which may remain for twenty minutesafter the insect has fully emerged. The young larva assists its own emergence
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectagriculture, bookyear
