P. Aneesh, A. K. Helna, Smrithy Raj, Appukuttan Nair Biju Kumar
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Description of Elthusa aquabio sp. n. (Crustacea: Isopoda: Cymothoidae), a branchial fish parasitic isopod from Indian waters
ABSTRACT A new branchial fish parasitic cymothoid species, Elthusa aquabio sp. n. (Crustacea: Isopoda: Cymothoidae), is described based on the ovigerous female collected from an unknown host obtained from trash fishes from the south-west coast of India. The species Elthusa aquabio sp. nov. has the following characteristics: (1) body slightly twisted, elongated, dorsal surfaces smooth, 1.8 times as long as greatest width; (2) pleon short, 0.16 times as long as total body length, pleon 0.75 times as wide as pereion maximum width; (3) widest at pleonite 3 and most narrow at pleonite 1; (4) coxae 5–7, flat, broad, laterally expanded; (5) uropods 0.7 times as the length of pleotelson; (6) pereopods 1–3 propodus inner lateral margin with small, robust spines; (7) antenna with 10 articles. http://www.zoobank.org/urn:lsid:zoobank.org:pub:60365DA9-9DD1-449F-B81F-30250B6E644D
期刊介绍：
Journal of Natural History is an international zoological journal publishing original research and reviews in evolutionary biology and ecology. It maintains its historical niche by publishing a broad range of systematics papers on all animal phyla from Porifera to Chordata, encompassing traditional taxonomic revisions and descriptions, cladistic analyses and molecular phylogenetics and phylogenomics. The journal has recognized strengths in entomology and marine invertebrates, but also welcomes papers on the natural history of all animal species and on the interactions of species with their environment. Preference is given to in-depth papers and extensive taxonomic reviews: single species descriptions and checklists are not normally considered. Authors wishing to suggest a review paper should contact the relevant editor.
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