. [Miscellaneous papers on insects. Entomology. /e^'s- €ljt 33ntiirnlist. ENTOMOLOGY. No. 7—The Wheat Thrips and Three-banded Thrips. A leltorfrom David Williams, (luted Gonevn, Wis- consin, July 9tll, says: Enclosed I send you specimens of a minute lillle insect that is cnusing some nlarm in this vioinily. Tliey nre found in nil blossoms in great numbers. They first mnde their npponnince nbout the middle of June, or nt least, they wore then first noticed, so farns I have beard, For about two weeks they were found in the blossoms of wheat and of clover, causing num- bers of the blossoms to wit
. [Miscellaneous papers on insects. Entomology. /e^'s- €ljt 33ntiirnlist. ENTOMOLOGY. No. 7—The Wheat Thrips and Three-banded Thrips. A leltorfrom David Williams, (luted Gonevn, Wis- consin, July 9tll, says: Enclosed I send you specimens of a minute lillle insect that is cnusing some nlarm in this vioinily. Tliey nre found in nil blossoms in great numbers. They first mnde their npponnince nbout the middle of June, or nt least, they wore then first noticed, so farns I have beard, For about two weeks they were found in the blossoms of wheat and of clover, causing num- bers of the blossoms to wither, and in some cases the k«rncl was also attacked. About a fortnight ago we had a very heavy fill of rain, which appeared to de- stroy them ; but within a few days I have noticed their re-appearance in countless numbers. They are very nimble, requiring good eyes and ready fingers to secure them, and I was obliged mainly to my wife for the capture of those which I send you. There are other kinds which I did not succeed in capturing. The insects alluded to in the above extract are so minute, that, had only two or three epecimens been sent, I should have been unable to give any definite account of their species. An acknowledgment is due Mrs. Williams for the number of these insects which she inclosed in the quill—a task which the bungling fingers of a man could scarcely have accomplished. Among them I find specimens in all tho singes of their growth, and am honco able to present a history and description of the species, suQiciently exact, I doubt not, to enable it to be recognized hereafter; although it is only from living specimens that such minute ob- jects can be satisfactorily studied, and described witb that precision and fullness which science requires. Insects of tho kind to which these belong, may be distinguished from all others by their wings, (see tho accompanying figure, e,) which are long, narrow, and strap-like, and are fringed on both sides with long hairs
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectentomology, bookyear1
