Validation of the porcelain crab Petrolisthes shanyingi Fang, Dong, Yang & Li (Decapoda: Anomura: Porcellanidae) from the northern South China Sea Author Fang, Xuefeng Department of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China & University of Chinese Academy of Sciences, Beijing 100049, China Author Dong, Dong Department of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China & University of Chinese Academy of Sciences, Beijing 100049, China Author Yang, Mei Department of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China Author Li, Xinzheng Department of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China & University of Chinese Academy of Sciences, Beijing 100049, China & Laoshan Laboratory, Qingdao 266237, China text Zootaxa 2024 2024-05-27 5458 1 147 148 http://dx.doi.org/10.11646/zootaxa.5458.1.10 journal article 10.11646/zootaxa.5458.1.10 1175-5326 11348139 F051C2AC-FFEA-46DB-A577-F71FCCF4339B Petrolisthes shanyingi sp. nov. urn:lsid:zoobank.org:act: 4E446B54-B050-4EE8-85CE-3C189AF78E7F Petrolisthes shanyingi Fang, Dong, Yang & Li, 2023: 14 , fig. 7F, 8A, B, E–I, 9. [Unavailable] Type material. Holotype : MBM189319 (coll. no. LHT-HS5 ), male (CL 6.9 mm ), Luhuitou , Sanya , Hainan Province , China , under stones, 30 March 2018 . Paratypes : MBM189320 (coll. no. LHT-HS ), 14 males (CL 3.3–8.2 mm ), 1 female (CL 3.7 mm ), 3 ovigerous females (CL 4.6–8.7 mm ), collected with holotype ; MBM189321 (coll. no. SYHS-HS ), 2 males (CL 5.2–5.6 mm ), 1 ovigerous female (CL 5.9 mm ), Houhai Village , Sanya , Hainan Province , China , in crevices of coral reef, 22 March 2018 . Diagnosis . Carapace generally glabrous, ovate, as long as or slightly longer than broad; lateral margins unarmed; pair of epibranchial spines well developed. Rostrum subtriangular; lateral margins sinuous. Telson composed of 7 plates. Second article of antennal peduncle with small lamellar lobe on anterior margin. Chelipeds glabrous; carpus with 3 broad, round-tipped teeth along proximal 2/3 length, proximal tooth prominent and triangular, second tooth comparatively low, distal tooth vestigial or at most subequal to second tooth; dorso-extensor margin with 3 acute spines on distal half; palm extensor margin entire. Ambulatory legs sparsely setose; merus unarmed on extensor margin, unarmed or with small distal spine on flexor margin of first and second legs; carpus distally unarmed; propodus with 4 movable corneous spines on flexor margin including distal pair; dactylus with 3 corneous spines on flexor margin. Etymology . The new species is named after Shanying College, the Middle School affiliated to Qingdao University, in appreciation of their support for our marine biodiversity studies.