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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Adephaga » Predaceous Diving Beetles (Dytiscidae) » Dytiscinae » Aciliini » Acilius » Acilius semisulcatus
Photo#37703
ribbed-elytra water beetle - Acilius semisulcatus - female
Copyright © 2005 Jim McClarin

ribbed-elytra water beetle - Acilius semisulcatus - Female
Windham, Rockingham County, New Hampshire, USA
April 20, 2004
Size: 15 mm approx.
Motal wound from ground beetles.

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ribbed-elytra water beetle - Acilius semisulcatus - female ribbed-elytra water beetle - Acilius semisulcatus - female
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Contributed by Jim McClarin on 20 November, 2005 - 2:25pm
Last updated 12 April, 2008 - 7:34pm

Moved
Moved from Acilius.
… Jim McClarin, 12 April, 2008 - 7:33pm login or register to post comments

Acilius semisulcatus
Black metasterna and metacoxa, elytra with sulci that do not extend anteriorly nearly to base (the medial two being longer), and head with distinct M-shaped macula all point to Acilius semisulcatus. Keyed using Taxonomic revision of the Holarctic diving beetle genus Acilius Leach (Coleoptera: Dytiscidae) (Bergsten & Miller, 2006; Systematic Entomology 31 (1), 145-197).
… Stephen Luk, 8 January, 2008 - 3:23pm login or register to post comments

 
A belated thank you, Stephen.
I'll move it :-)
… Jim McClarin, 12 April, 2008 - 7:32pm login or register to post comments

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