A new brackish tanaidacean, Sinelobus kisui sp. nov. (Crustacea, Peracarida, Tanaidacea), from Japan, with a key to Sinelobus species and barcode information from two loci

We describe the new brackish tanaidid species Sinelobus kisui sp. nov. from Hagi, Yamaguchi, Japan. is similar to S. barretti and vanhaareni in having antennal article 2 with one outer distal seta, dorsodistal crotchet on pereopods 3 carpi shorter than half propodus length, pereopodal 2–6 five crotchets, but differs them (1) inner of two ventro-subdistal circumplumose setae maxillipedal endite longer outer; (2) mid-inner spiniform seta; (3) pereopod-1 middle setulate (4) pleopod-1 protopod lacking plumose setae. Our study confirmed that character states chelipeds strongly dimorphic males are useful taxonomy. determined partial sequences for cytochrome c oxidase subunit I (COI; cox1) 18S rRNA (18S) genes future DNA barcoding phylogenetic analyses. Morphological and/or molecular data reveal also occurs Kagawa Osaka, A key provided.