Tiny water beetle - Liodessus

Moved

… Tim Loh, 28 June, 2009 - 7:09pm

Moved

Moved from Uvarus.

… Jim McClarin, 23 January, 2009 - 4:07am

Actually Liodessus...

The transverse occipital groove on the head just behind the eyes separates this genus from Uvarus..From the species keys this appears to be either L. affinis or L. noviaffinis, which are basically identical in terms of colouration (members of each species are also variable in colour and patterning) and can only be reliably separated via examination of male genitalia...and I just can't imagine how you do that to a tiny bug like this (other than microdissection)...

… Tim Loh, 23 January, 2009 - 2:01am

Don't see a groove

but I don't know what to look for. I see what might be called a transverse pronotal band, the light-colored crosswise broken stripe behind the eyes. Anyway, I will gladly accept the new ID as I figure you *do* know what you're looking at :-) Thanks, Tim.

BTW, I've added another image of this beetle.

… Jim McClarin, 23 January, 2009 - 4:05am

Moved

Moved from Predacious Diving Beetles.

… Jim McClarin, 19 September, 2008 - 5:32pm

my best shot at this is Uvarus

can't be sure for the lack of detail, sorry :-[

… v belov, 19 September, 2008 - 4:21pm

I'll take it.

With my equipment detail is hard to get in a 2mm water beetle.

… Jim McClarin, 19 September, 2008 - 5:31pm