title: Orstomella yaliuensis n. sp., a xarifiid copepod (Crustacea) parasitic in the polyps of hump coral Porites lutea Milne Edwards & Haime off Taiwan.
abstract: A new species of xarifiid copepod, Orstomella yaliuensis n. sp., is described. It was found living in the polyps of a scleractinian coral, Porites lutea Milne Edwards & Haime, collected off Yaliu in the northern part of Taiwan. The new species can be distinguished from its two congeners, O. faviae Humes & Ho, 1968 and O. lobophylliae Humes & Ho, 1968, by the presence of five (rather than six) segments on the antennule, a spine only (rather than a seta and a spine) at the tip of the antenna, a uniramous leg 2, and a relatively long (rather than short) spine at the tip of the caudal ramus.
authors.affiliation: Institute of Oceanography, National Taiwan University, Taipei 106, Taiwan.
authors.forename: Yu-Rong
authors.initials: YR
authors.lastname: Cheng
authors.forename: Ju-shey
authors.initials: JS
authors.lastname: Ho
authors.forename: Chang-Feng
authors.initials: CF
authors.lastname: Dai
mesh_terms: D000818:Animals; D037421:Anthozoa / Q000469:parasitology*; D033342:Copepoda / Q000033:anatomy & histology / Q000145:classification*; D008853:Microscopy / Q000379:methods; D010140:Pacific Ocean; D013624:Taiwan