A snail reported from central and northeastern Viti Levu.
The dried shell of the single holotype is 3.45 mm high; its sex is unknown.
Palaina labeosa is recorded from central and northeastern Viti Levu in Fiji. Neubert and Bouchet’s 2015 revision describes type material from Waivisa karst, rainforest at 50–80 m elevation, collected on 27 August 1998.
Additional material came from rainforest near Laselevu village at 80 m elevation, collected on 14 February 1999. The shell is brownish to yellowish, with a strongly reinforced lip around the opening. The holotype is 3.45 mm high. The authors derive the name labeosa from the Latin for “thick-lipped.”
An extinction-risk assessment has not been added yet.
Neubert and Bouchet’s 2015 revision records Palaina labeosa at Waivisa karst and near Laselevu village on Viti Levu. Both records are from rainforest, collected in 1998 and 1999. Their family survey covered 12 Viti Levu localities, with 1–13 Diplommatinidae species at each. The authors noted many unsurveyed islands and limestone areas and estimated Fiji’s 42 known species might represent about half of the family’s fauna.