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R.frontalis
Rhantus frontalis 18-05-2015 underside
Rhantus frontalis
(Synonym: Rhantus notatus)

The beetle lies on its back on dry land for a moment to take a photo of the underside. In contrast to R. suturalis , which has a completely black underside, we see a pattern of black and yellow/brown here. In females the abdomen segments are yellow (brown) with black spots on the sides, in males this is the other way around (Foster & Friday, 2009 and Erichson, 1837).



Click on the images below to see more photos of Rhantus beetles.

Rhantus frontalis 18-05-2015
More Rhantus frontalis.
Rhantus suturalis 24-07-2007
To Rhantus suturalis.
Rhantus exsoletus 23-06-1999
To Rhantus exsoletus.



Literature:

See also the Waterbeetles bibliography.

Erichson, W. 1837 Die Käfer der Mark Brandenburg 1e band. 1.-2 F.H. Morlin Berlin 1837
DOI: https://doi.org/10.5962/bhl.title.65804
Read 19-05-2024 on: https://www.biodiversitylibrary.org/item/132640#page/19/mode/1up
On the two species, read 21-05-2024 on: https://www.biodiversitylibrary.org/item/132640#page/164/mode/1up


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