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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles (Polyphaga) » Series Staphyliniformia » Rove, Carrion and Fungus Beetles (Staphylinoidea) » Rove Beetles (Staphylinidae) » Large Rove Beetles (Staphylininae) » Staphylinini » Philonthina » Cafius » Cafius seminitens
Photo#43992
Stenus rove beetle? - Cafius seminitens
Copyright © 2006 Will Chatfield-Taylor

Stenus rove beetle? - Cafius seminitens
Venice Beach State Park, San Mateo County, California, USA
March 2, 2006
Found him under some dried kelp that had washed ashore on the beach. I know there is a genus of Roves that like to do that. Is it Stenus? Any help would be great!
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Contributed by Will Chatfield-Taylor on 2 March, 2006 - 6:56pm
Last updated 19 March, 2021 - 5:58am

Moved
Moved from Cafius.
… Boris Büche, 19 March, 2021 - 5:58am login or register to post comments

Staphylinidae: Staphylininae
It is one of the staphylinine genera - far from Stenus. Possibly a Platydracus if about 25 mm, perhaps a Cafius if about 12. Stating the size is very helpful if you wish staphylinids identified.
… Donald S. Chandler, 2 March, 2006 - 7:41pm login or register to post comments

 
Size:
The size was about 15mm I'd estimate. Does the fact that it lived under seaweed help?
… Will Chatfield-Taylor, 2 March, 2006 - 7:58pm login or register to post comments

 
Staphylinidae: Staphylininae: Cafius sp.
As Phillip has indicated, based on size and habitat it is almost certainly a Cafius. The classic habitat for this small genus is beneath wrack at the seashore.
… Donald S. Chandler, 4 March, 2006 - 7:29am login or register to post comments

 
Thanks!
Thanks a lot for all your help, that makes my 59th family of insect I've photographed!
… Will Chatfield-Taylor, 4 March, 2006 - 10:58am login or register to post comments

 
many, many, many spp.
Just to get an idea, see the California list. Tough group. Cafius sp. sure looks possible, right habitat.

Moore, I. 1964 The Staphylinidae of the marine mud flats of southern California and northwestern Baja California (Coleoptera: Staphylinidae). Trans. San Diego Soc. Nat. Hist. 13, 269-284
… Phillip Harpootlian, 2 March, 2006 - 8:01pm login or register to post comments

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