NASAT / EM-3-GREEN'S SPECIES

Planet of Origin: Nasat, in the Milky Way

The Nasat are an insectoid species from planet Nasatwhich they share with a sentient plant-like species, the Citoac. They come in five different colors, which are integrated into their names (Blue, Brown, Red, Green, and Yellow). They possess hard, chitinous shells which allow them to survive in a vaccuum for limited periods of time. Nasat generally have little sense of history, and romantic love is an alien concept to them. (SCE eBook: Balance of Nature)

The Nasat made contact with the United Federation of Planets by the late 23rd century. (TAS episode: "The Jihad"). By the 24th century, they were members of the Federation, although many Nasat decided not to leave their homeworld.

Source: Star Trek Universe