Pantomorus carinirostris is distinguished because the eyes are flat, the elytra are slender and somewhat constricted behind the humeral area (humeri are not developed), and the front coxae are separated from each other such as in species of Parapantomorus Emden.
The vestiture is grey, with a white stripe along each side of pronotum and elytra, same as in Naupactus leucoloma. Setae are shorter and not erect as in the latter species.
Unknown.
In Argentina is mainly associated with vegetation of the Paranaense biogeographic province.