Pelthydrus suffarcinatus, is a species of water scavenger beetle endemic to Sri Lanka.
[1][2] Body length of male is about 2.35 to 2.60 mm.
There are distinctive, curved ridges in the apical third of the elytra.
Mesosternal process reduced on the clearly raised median ridge.
Aedeagus almost built parallel, then slightly curved outwards.