Cross-upload of older Oekaki stuff, for vague reference of Luros-B species I guess. As per usual, the rear limbs aren't present, due to laziness :

The Mugg secrete a red waxy substance that upon exposure to air begins to set into a hard, slightly flexible armour. Their ancestors habitually 'groomed' themselves, spreading and sculpting the armour into even, flat amounts and ensuring fissures and worn patches were repaired. Their limbs and neck only received token attention as the constant flexing and movement disturbed and shed the hardening resin. In modern times, young adults have their glands surgically removed and artificially farmed for this resin as a vital material, though some individuals opt to keep them and act as living 'farms', producing higher yields and gaining a modest supplemental profit at expense of convenience. The contrasting colours made for an amusing species that appeared to wear shoes, gloves and a helmet. Anybody unlucky enough to be struck by the acrobatic strikes of a primal Mugg would quickly find the density and hardness is much comparable to ceramic, only it doesn't seem to break no matter how hard they club you with it. Born with their fingers and toes fused, early surgical procedures are used to separate the digits to allow full manipulation, though they retain some degree of mitten-like functionality even when fused and "gloved" by resin.

The Mugg have a tendancy to approach life with a slower pace than most, daydreaming, observing, pondering... preferring a sedentary trundling lope on all-fours than any amount of upright pacing, like some kind of strange, lighter-toned lumbering turtle. Similarly, with their extremities freed from their natural fusing, they often resemble primates due to their nonchalant brachiating, making full use of all limbs. To them, the ability to hang upside down or swing with perfect balance between anchors is just a natural, boring method of getting around. They are perfectly capable of faster paced living, and have the full array of emotional and social capabilities, but are given to constant bouts of dormancy and contemplance when left unstimulated.

Within the Wait communal cities, they often dominate the diplomatic and official positions, able to maintain an even keel in the face of most difficult customers. Where the Shigyan are the heart and soul of Wait, and the Ensu'tk are the backbone, the Muggerati are considered the mind. Many outgrow the simple Waitian life and cast their lot out to the stars with relatively assured success. Plus, they make great straight-men in comedy duos.

As a terran reference point, disregarding the obvious disparities, they are like an odd mix of ape and camel, with a similar natural vocal overtone. The similarities to turtles is only really in beaky maw-shape and preference for slow lifestyle. I imagine variants would have a more directly turtley appearance, but their skin would remain somewhat suede-like.