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Three New Species of Pontellidae (Copepoda, Calanoida) From Coastal Waters of Java, Indonesia

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Three new species of the family Pontellidae, Labidocera javaensis, L. muranoi and Pontella labuanensis, are described and illustrated from specimens collected in coastal waters of Java, Indonesia, and their relationships to related species are discussed. Labidocera javaensis, which belongs to the Labidocera pectinata-group, is distinguishable from other species of this group by a combination of characters of the genital complex and the fifth legs in the female and of the fifth metasomal somite, the first urosomal somite, and the fifth legs in the male. It seems to be a neritic species inhabiting coastal waters shallower than 15 m in depth, and within 1 km offshore. Labidocera muranoi, which was collected from Cilacap Bay, a mangrove estuary facing the Indian Ocean, belongs to the Labidocera kroyeri-group and is distinguished from other species of this group by the urosomal somites and the fifth legs in the female and by the fifth metasomal somite and the fifth legs in the male. This may be an endemic species which has a preference for low salinities. Pontella labuanensis does not belong to any of the known three species-groups of Indo-West Pacific Pontella, in having the symmetrical genital somite and the exopods of the fifth legs virtually naked in the female, and the rostrum with double convex lenses and the exopods of the fifth legs with two subequal thumbs, in the male. The establishment of a new species-group, the P. labuanensis-group, is proposed.

Affiliations: 1: Department of Aquatic Biosciences, Tokyo University of Fisheries, 4-5-7 Konan, Minato-ku, Tokyo 108, Japan


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