big jawed water bug - Dytiscus

Moved

Moved from Dytiscus.

… Tim Loh, 29 June, 2009 - 2:52pm

Moved

Moved from Rhantus.

… tom murray, 2 April, 2009 - 4:18pm

Dytiscus larva

This is a first-instar larva of the genus Dytiscus. Its characters are urogomphi and last abdominal segment with natatory setae and V-shape of anterior margin of the prementum (it is possible to see through the transparent head). No doubt - Dytiscus larva.

… Helena Shaverdo, 2 April, 2009 - 3:17am

Moved

Moved from Dytiscus.

… tom murray, 23 January, 2009 - 8:28pm

Thanks Tim

Moved from Predacious Diving Beetles.

… tom murray, 5 January, 2009 - 9:13pm

Dytiscus sp.

probably an early instar

… Tim Loh, 5 January, 2009 - 1:37pm

Correction..

After reviewing my id again, this appears to be a larva of a Rhantus sp...for some reason I didn't notice the lack of setae on the 7th abdominal segment. sorry!

… Tim Loh, 23 January, 2009 - 8:10pm

Predacious Diving Beetles

Tom-

Very nice photos. Both would appear to be aquatic beetle larvae of family Dytiscidae, Predacious Diving Beetles, perhaps Cybister or some closely related genus.

www.FlyfishingEntomology.com

… Roger Rohrbeck, 29 April, 2006 - 12:37am

Wow!

Water beetle larvae at last! Neat finds, Tom. Now, when this pupates, a female bomba*dier beetle will try to hunt it down and lay an egg or two on it so her larvae can burrow in and feast their way to maturity. I wonder if their are other things that parasitize water beetle larvae.

… Jim McClarin, 29 April, 2006 - 7:01am

Aquatic Coleoptera Parasites

Jim-

Some aquatic Hymenoptera (Wasps) parasitize aquatic Coleoptera. This can be extensively viewed in Table 19A, on pages 482-483 of Aquatic Insects of North America (Third Edition), in the chapter on Aquatic Hymenoptera written by Kenneth S. Hagen, edited by Merritt/Cummins.

… Roger Rohrbeck, 26 January, 2008 - 6:07pm

Predacious Diving Beetle Larva

Now I can see why they're called "predacious" with those jaws. Thanks Roger and Jim for the info.

… tom murray, 29 April, 2006 - 7:59am