. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . Triboliuni confusum.—a, adult; b, larva; c, pupa; e, head, with antenna; y, same of T. fcnugincuiii. Perhaps the most interesting, and economically the most im- portant of this series, are the "blister-beetles," or IMcloida;. The name "blister-beetles" is from a peculiar property possessed hv them of raising blisters on the human i^kin. This is due to a substance called " cantharidin," found in the juices of all the species to a greater or
. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . Triboliuni confusum.—a, adult; b, larva; c, pupa; e, head, with antenna; y, same of T. fcnugincuiii. Perhaps the most interesting, and economically the most im- portant of this series, are the "blister-beetles," or IMcloida;. The name "blister-beetles" is from a peculiar property possessed hv them of raising blisters on the human i^kin. This is due to a substance called " cantharidin," found in the juices of all the species to a greater or less extent. The species generally used in medicine comes from Spain, hence the insects are also known as "Spanish ; The beetles are rather soft-bodied, with broad heads, the antennae often knotted in the males, the thorax narrow and cylindrical, the wing-covers extending well down the i'ides. Some of the species are brightly colored and banded, occasionally metallic bronze or coppery, and all of them are leaf- feeders. Among the common eastern species several attack potatoes, and of these a yellow and black-striped form, Epicaida viitata, is known as the "old-fashioned ; Asters 15
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Photo credit: © The Bookworm Collection / Alamy / Afripics
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomology, bookyear1
