A checklist of spiders from Yongxing Island, South China Sea, with taxonomic notes on four species of goblin spiders Author Tang, Jiaxin College of Life Science, Shenyang Normal University, Shenyang, China Author Liang, Wei https://orcid.org/0000-0002-0004-9707 Ministry of Education Key Laboratory for Ecology of Tropical Islands, Hainan Normal University, Haikou, China Author Shi, Haitao Ministry of Education Key Laboratory for Ecology of Tropical Islands, Hainan Normal University, Haikou, China Author Gao, Caixia Institute of Zoology, Chinese Academy of Sciences, Beijing, China Author Li, Shuqiang https://orcid.org/0000-0002-3290-5416 Institute of Zoology, Chinese Academy of Sciences, Beijing, China Author Zheng, Guo College of Life Science, Shenyang Normal University, Shenyang, China zhengguo@synu.edu.cn text Biodiversity Data Journal 2021 2021-05-21 9 67087 67087 http://dx.doi.org/10.3897/BDJ.9.e67087 journal article http://dx.doi.org/10.3897/BDJ.9.e67087 1314-2828-9-e67087 5464A0159E485DC2AD49727CD812B8EE Opopaea apicalis (Simon, 1893) Materials Type status: Other material . Occurrence : recordedBy: Shuqiang Li ; individualCount: 13 ; sex: 2 males , 11 females ; lifeStage: adult ; Taxon : scientificName: Opopaea apicalis (Simon, 1893); kingdom: Animalia ; phylum: Arthropoda ; class: Arachnida ; order: Araneae ; family: Onopidae ; genus: Opopaea ; taxonomicStatus: accepted; Location : country: China ; countryCode: CHN; stateProvince: Hainan ; county: Yongxing ; decimalLatitude: 16.833 ; decimalLongitude: 112.333 ; Identification : identifiedBy: Jiaxin Tang ; identificationReferences: Platnick & Duperre , 2009; Event : year: 2008; month: 1; day: 13-19 Description Male. Measurements (in mm): Body length 1.35; carapace 0.60 length, 0.40 width; abdomen 0.70 length, 0.35 width. Leg measurements: I 2.15 (0.55, 0.25, 0.40, 0.50, 0.45), II 1.70 (0.55, 0.25, 0.35, 0.30, 0.25), III 1.01 (0.40, 0.18, 0.25, 0.18), IV 1.75 (0.50, 0.25, 0.40, 0.35, 0.25). Leg formula: 1> 4> 2> 3. Cephalothorax. Sides of carapace yellowish-brown; dorsally yellow; chelicerae, sternum yellow; legs and abdomen light yellow. Carapace with a dark brown patch behind eyes, dorsally with a few rows of short hairs. Sides of carapace with finely longitudinal striae. Eyes six in two rows, rather large, nearly equally-sized, ALE slightly separated, touching posterior lateral eyes; posterior eyes in procurved row, touching each other (Fig. 4 A and C). Base of fang with two plumose hairs on lateral sides (Fig. 4 F). Labium wider than long, endites with membranous tip (Fig. 4 B). Legs. Leg I: femur with a row of dorsal setae, 3 retrolateral setae; patella without setae; tibia with a ventral seta; tarsus with distinct strong setae. Leg II, III and IV similar to leg I. Abdomen. Dorsal scutum oval-shaped, covering nearly entire abdominal length. Lobes on anterolateral corners of petiolar tube distinct, ridges developed, but without forming a scutal cove; opercula small, oval-shaped. Sperm pore clearly discernible, transverse. Male palp. Patella of palp (Fig. 5 A and B) significantly larger than cymbiobulbus; cymbiobulbus with a clavate protrusion at base and three branches at the end. Female. As in male, except as noted. Slightly larger than male. Measurements (in mm): Body length 1.35-1.45; carapace 0.40-0.60 length, 0.35-0.40 width; abdomen 0.50-0.65 length, 0.40-0.45 width. Leg measurements: I 1.88 (0.55, 0.25, 0.40, 0.48, 0.20), II 1.50 (0.50, 0.25, 0.30, 0.25, 0.20), III 1.38 (0.40, 0.20, 0.30, 0.30, 0.18), IV 1.79 (0.54, 0.30, 0.40, 0.35, 0.20). Epigynum. Postgynal depression of epigastric area shallow, with inverted V-shaped sclerotisation situated posterior to epigastric furrow; parmula black, small (Fig. 4 D and E). Distribution China (new record), Ecuador, Indonesia, Mexico, Pacific Is., Panama, Philippines, Seychelles, Thailand, USA.