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Issue: Vol. 4629 No. 3: 8 Jul. 2019
Type: Article
Published: 2019-07-08
DOI: 10.11646/zootaxa.4629.3.9
Page range: 413–427
Abstract views: 114
PDF downloaded: 7

Xenosinelobus balanocolus, a new tanaidid genus and species (Crustacea: Peracarida: Tanaidacea) from barnacles on intertidal rocky shores and seawalls in the Singapore Strait

Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore 117558. Keppel-NUS Corporate Laboratory, Faculty of Engineering, National University of Singapore, Blk E1A, #03-03, 1 Engineering Drive 2, Singapore 117576. St. John’s Island National Marine Laboratory, Tropical Marine Science Institute, National University of Singapore, 18 Kent Ridge Road, Singapore 119227.
Keppel-NUS Corporate Laboratory, Faculty of Engineering, National University of Singapore, Blk E1A, #03-03, 1 Engineering Drive 2, Singapore 117576. St. John’s Island National Marine Laboratory, Tropical Marine Science Institute, National University of Singapore, 18 Kent Ridge Road, Singapore 119227.
Crustacea Tanaids Tanaidomorpha Tanaidoidea Tanaididae Sinelobinae Tetraclita Indo-West Pacific Southeast Asia Singapore

Abstract

This study describes a new genus and new species of Tanaidacea that was collected from inside the tests of dead Tetraclita barnacles in Singapore. Xenosinelobus n. gen. is most similar to Sinelobus but can be distinguished by the (1) unusually short antennal fifth article, (2) tooth-like lacinia mobilis on right mandible, (3) long terminal seta on epignath, (4) plumose inner seta near dactylus insertion on cheliped propodus, (5) spiniform seta on pereopod 1 coxa, (6) presence of setae on inner margins of pereopod 1 propodus and dactylus, (7) claw-like terminal articles on pereopods 2 and 3, (8) row of setulose and flattened denticulate setae along distal margin of pereopod 6 propodus, (9) dorsal seta on claws of pereopods 4–6, (10) complete row of dorso-transverse setae on pleonites 1 and 2, (11) one seta on pleopod basis outer margin, (12) two or three setae on pleopod endopod inner margin and (13) three-articled uropod with final article 1.6 times as long as preceding article. A new diagnosis and key to genera is provided for the subfamily Sinelobinae.

 

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