They are bipedal and mostly upright. They are digitigrade and have two sets of tentacle like arms. Their upper arms are larger and stronger, where as the smaller pair are more nimble and flexible. All arms end with a set of four fingers with the palm being somewhat rectangular in shape and a digit growing from each corner. Digits are also boneless, instead their fingers are a flexible cartilage "minispine."
They have a long, thick, prehensile tail that helps balance their somewhat top heavy torsos. Their heads are a medium length, longer than a humans but more bulbous in the front. They have a large lobe like forehead and a dextrous upper lip and split lower jaws. Their jaws are mandible like, with a joint in the middle they can grab and hold things in their jaws. However they do not use their jaws in fighting as they are somewhat delicate, like the equivalent of getting punched in the nose for us. They have two large forward facing eyes set just behind the jaw. They also have vestigial feelers that protrude from the base of their jaws on the neck. These feelers are hyper sensitive to any air or electrical currents around them. It is nearly impossible to sneak up on a Gapuri.
There is only one gender in the Gapuri, since they can only reproduce once every Skathan year (roughly 400 days), they need to be able to make up for lost reproductive time, thus both individuals in a pair will become pregnant from a single mating, this doubles the chance of one of the offspring surviving.
Most animals on Skatha reproduce this way.
EDIT: Reasons for one mating season
Skatha has some rather severe weather changes, on the continent that this particular individual lives on, which is called Suuth, is the hottest of the continents (it lies right on the equator). The inland sea provides an oasis for flora and fauna alike, but the temperatures can soar above 130 in the hottest time of the year. During the dry season is their mating period, that way they give birth the cooler time of the year. The adults can handle the heat, but the young are weaker when they are first born, it takes them about a half a year to fully develop thick enough skin to insulate their internal organs and brain from the sweltering conditions.
If the Gapuri where to have a child during the hot season it would almost surely die within a few days even if kept in the shade. Their brain would overheat and their internal organs would shut down.