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A NOTE ON SOME HYDROPHILIDÆ

Published online by Cambridge University Press:  31 May 2012

George H. Horn
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Extract

Hydrophilus, as heretofore recognized in our fauna, contains two sets of species, the one series large, the other relatively small. They also differ in the form of the maxillary palpi and should properly be considered distinct genera defined as follows:—

Hydrophilus.—Terminal joint of maxillary palpi much shorter than the penultimate, the second joint long, arcuate. Claws toothed.

Tropisternus.—Terminal joint as long or even longer than the penultimate, the second joint moderately long and straight. Claws not toothed.

The large species belong to the first series, and but two have appeared in our lists.

Type
Articles
Information
The Canadian Entomologist , Volume 17 , Issue 7 , July 1885 , pp. 137 - 139
Copyright
Copyright © Entomological Society of Canada 1885

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