Small giant waterbug (Diplonychus eques)

This streamlined little creature had me puzzled for quite a while. Although there is no water in the local area it turned out to be one of only two species of waterbug in Australia. The 'giant' species that is more commonly known is very much larger and found (and eaten!) throughout SE Asia and also occurs in far northern Australia. This one seems to be it's cool climate cousin. Not studied very well yet.
Attracted to night lights at the local school. About 18mm long.
"The females of the subfamily Belostomatinae lay their eggs upon the back of the males, who cares for them by alternatively wetting them and exposing them to air....... (in Australia) The genus Diplonychus in the subfamily Belostomatinae contains 1 species, Diplonychus eques, that is found in most states except Tasmania and South Australia and 1 species, Diplonychus planus, restricted to the northern gulf region. " - CSIRO

http://bie.ala.org.au/species/urn:lsid:biodiversity.org.au:afd.taxon:0314c48b-9482-4c6a-8c53-8ef86725eeed#