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THE COLEOPTERA OF CANADA
Published online by Cambridge University Press: 31 May 2012
Extract
The members of this group are distinguished, as already stated, by the position of the abdominal spiracles, which are placed in part on the superior poriton of the ventral segements, the rows feebly diverging; the last spiracle usually visible behind the elytra.
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- Copyright © Entomological Society of Canada 1894