. 1st report of Dr. Fitch on the noxious, beneficial and other insects, detrimental to agriculture, made to the New York State Agricultural Society. Beneficial insects; Insect pests; Insects. 44 APPLE TWIGS, LOCUST—HABITS OF THE PDPA. size, and came out of the giound upon the same day, with those which appeared in the timber lands; nor were they any more plenty beneath two or three shade trees standing in the cleared grounds than in other parts of the fields. In other places I was also in- formed of their coming from the earth plentifully in fields which had been cleared several years. Indeed,
. 1st report of Dr. Fitch on the noxious, beneficial and other insects, detrimental to agriculture, made to the New York State Agricultural Society. Beneficial insects; Insect pests; Insects. 44 APPLE TWIGS, LOCUST—HABITS OF THE PDPA. size, and came out of the giound upon the same day, with those which appeared in the timber lands; nor were they any more plenty beneath two or three shade trees standing in the cleared grounds than in other parts of the fields. In other places I was also in- formed of their coming from the earth plentifully in fields which had been cleared several years. Indeed, the pupse emerge in all situations, except where the ground has been wholly destitute of trees and shrubs for seventeen years or more. They even work their way out in the middle of the most solid and hard-trodden roads. This fact is noticed by Rev. Andrew Sandel in the first recorded notice which we possess of this insect, in 1715, (Medical Repository, vol. iv., p. 71,) and was also stated to me by different persons in Illinois. It serves to show the remarkable strength which the anterior legs of the pupa must possess to enable it to dig through ground so compacted. It is in the night time that the pupa (of which the accompany- ing figures, taken from specimens of C. rimosa, give a view,) emerges from the ground. The warmth and dryness of the air by day would doubtless cause its exterior shell-like case to become stiff and crack open prematurely. Some of the pupa hatch upon the ground, near the holes from which they have emerged; others crawl up the sides of fences and upon bushes and trees, sometimes to a height of twenty feet. The pupa fixes itself securely by its feet, its thin shell-like cover- ing cracks open anteriorly upon the back, and the inclosed insect withdraws itself therefrom, leaving the empty case adherint^ to the place where it was fixed. The oak is the tree which the seventeen-year locust appears most to infest, for the purpose of depositing its eggs, and n
Size: 1723px × 1450px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, booksubjectb, booksubjectinsects
