Large spider-like creatures found on the moons of Bajor, well known to former resistance fighters and encountered by Kira and Dax in The Siege.
Palukoos are big arachnids that live on at least one of the moons of Bajor. They appear in the Deep Space Nine episode The Siege, the last part of the three-part story that opens the second season.
In 2370, with the station occupied by forces loyal to the Circle, Kira and Dax travel to the moon Lunar V to find one of the small raiders the resistance hid there during the Occupation. As they search the dusty underground base, palukoos scuttle about the walls and the old craft.
Dax is plainly uncomfortable. Kira, who lived rough for years as a resistance fighter, is unconcerned and calmly tells her what the creatures are. The two women get the neglected ship flying and take it to Bajor with evidence that the Cardassians are arming the Circle.