Note

Key to Adults of Bembidion (Bracteon)

David R. Maddison

The following key utilizes features of adult structure. The differences in external structure between some of the species are rather subtle (e.g. between B. balli and B. foveum). For these, an examination of the male genitalia is sometimes necessary for accurate identification. A page

 comparing male genitalia may be of use while examining genitalia.

(There is an alternative key with all couplets on one page.)


1.      Distinct smooth patches ("mirrors") on elytra, at least on 
        interval 3 surrounding silver spots, or elytra generally 
        smooth and shiny ............................................3

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1'. Distinct elytral mirrors lacking, interval 3 between silver spots dull, or at least not markedly shinier than rest of elytra ......................................................2
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About This Page

David R. Maddison
Oregon State University

Page: Tree of Life Key to Adults of Bembidion (Bracteon) Authored by David R. Maddison. The TEXT of this page is licensed under the Creative Commons Attribution License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.

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