Opopaea apicalis (Simon, 1893)

Tang, Jiaxin, Liang, Wei, Shi, Haitao, Gao, Caixia, Li, Shuqiang & Zheng, Guo, 2021, A checklist of spiders from Yongxing Island, South China Sea, with taxonomic notes on four species of goblin spiders, Biodiversity Data Journal 9, pp. 67087-67087 : 67087

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 & Dupérré, 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.

Figures

Figure 4. Opopaea apicalis (Simon, 1893). A. Carapace of male, dorsal view; B. Same, ventral view; C. Same, lateral view; D. Genital area of female, dorsal view; E. Ventral scutum of female, ventral view; F. Right male chelicerae, posterior view. Scale bars: 0.1 mm.

Figure 5. Opopaea apicalis (Simon, 1893). A. Left male palp in prolateral view, arrow ① points at clavate protrusion; B. Left male palp in retrolateral view. Scale bar: 0.1 mm.