LAUSR

Two new species of Labidocera from Indonesian waters are herein described. Labidocera baliensis n. sp. is distinguishable in the female by the posterior corners of Pdg5 being rounded and equipped with a sub-posterior spine, the left side of Ur1 with a stout spine-like process, and the form of the P5; in the male by the Ur1 smooth and the very slender shape of P5. Labidocera gagensis n. sp. is distinguishable in the female by having 7 spine-like processes on Ur1, the structure of 6 spine-like processes on the posterior end of Ur2 and the form of P5; in the male by the long spine at the right posterior part of Ur1; and the 5 spine-like processes on the right posterior corner of Pdg5 as well as the form of P5. The relationships between the “detruncata” and “kroyeri” groups are discussed and defining characterizations of the species and of the species groups are provided.