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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Ground and Water Beetles (Adephaga) » Predaceous Diving Beetles (Dytiscidae) » Dysticinae (Dytiscinae) » Cybister » Cybister fimbriolatus
Photo#37383
A beetle out of water - Cybister fimbriolatus
Copyright © 2005 Jeff Hollenbeck

A beetle out of water - Cybister fimbriolatus
Martin County, Florida, USA
November 10, 2005

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A beetle out of water - Cybister fimbriolatus A beetle out of water - Cybister fimbriolatus A beetle out of water - Cybister fimbriolatus
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Contributed by Jeff Hollenbeck on 15 November, 2005 - 12:31pm
Last updated 20 February, 2006 - 5:52pm

Cybister, I think
These are tough, but I think this is Cybister. Quoting from the summary on the guide page for the family, where there are references:
Lower/outer hind tibial spur much wider than upper/inner in Cybister (seen here, I think), spurs similar in size in Dytiscus.

Other characters: On metatarsi, outer margin of Cybister has a narrow fringe, lacking in Dytiscus. Metatibia of Cybister is short and broad, that of Dytiscus is longer and narrower.

Compare this photo of Cybister:



I'm ready to stand corrected--these are tough.

Patrick Coin
Durham, North Carolina
… Cotinis, 15 November, 2005 - 1:43pm login or register to post comments

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