Pitrillistian

Pitrillistians were a species of seven foot tall beings native to the planet Pitrillistia. They appeared very imposing in their brightly colored clothes which covered their two-piece shells. They were a peaceful species and spoke a language which was mostly musical buzzes created by the small wings stored underneath their shells. To feed they would use their proboscises to suck the minerals from fluids. They had two upper limbs, both with different "hands"; the left was insect-like while the right was human-like, although it only had four fingers, and allowed them to grip blasters and other such objects.

Behind the scenes
Pitrillistians were creadted by Desset Fabian, a Star Wars fan, as part of the Design An Alien contest held in the Star Wars Galaxy Magazines. Though the entry was not picked as a winner, it was given an honorable mention in Star Wars Galaxy 7 and so it is not known exactly how canon the species is.