Though it was originally thought to contain eleven species, upon recent reexamination, the number of species was reduced to two. Fewer than 100 specimens of the genus have been collected to date, and found only in a small part of
South America in the border region of
Brazil and
Argentina. It remains unknown what their habits are, where they can be found in the water (though there is some evidence that they may lurk in the muck at the bottom of ponds), what their position in the
phylogeny of the water bugs is, or whether they brood their eggs as all other giant water bugs do. Some of these questions are currently being addressed by entomologists. == References ==