Bembidion zephyrumDavid R. Maddison
Adult External Characteristics
A wide, flat species, with extensive, distinct mirrors. Anterior mirrors of elytra connected to rest of mirrors only by fainter mirrors on interval 3. Midlateral pronotal seta present. Lateral margin of prothorax explanate, especially toward the prominent front angles:
Male genitalia with Ventral Sclerite Patch usually without the distinctly angulate and sclerotized dorsal ridge of related species.
Comparison with Related Species
For a discussion of the traits distinguishing B. zephyrum from B. levettei, see Separating B. zephyrum from B. levettei.
No geographic variation noted in external features. However, the length of the second stylomere in females varies considerably, with specimens from north of Bandon, Oregon, having much longer stylomeres than specimens in northern California.
On the west cost of North America, from British Columbia south to central California:
Most specimens have been found on the beaches of the Pacific Ocean. In this habitat in Oregon they are common under driftwood on the beach:
- Bembidium zephyrum Fall 1910. Holotype male in MCZ. Type locality Humboldt County, California.
- Bembidion zephyrum tristiculum Casey 1924
- Bembidion marginosum Casey 1924
About This Page
David R. Maddison
Oregon State University
Page copyright © 1995 David R. Maddison
Page: Tree of Life Bembidion zephyrum 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.
Citing this page:
Maddison, David R. 1995. Bembidion zephyrum http://tolweb.org/Bembidion_zephyrum/398/1995.01.01 in The Tree of Life Web Project, http://tolweb.org/. Version 01 January 1995 (under construction).