Patu nagarat S. Li & Lin, 2021

Li, Ya, Li, Shuqiang & Lin, Yucheng, 2021, Taxonomic study on fourteen symphytognathid species from Asia (Araneae, Symphytognathidae), ZooKeys 1072, pp. 1-47 : 1

Patu nagarat S. Li & Lin sp. nov.

Figures 8 , 9 , 23

Type material.

Holotype ♂ (IZCAS-Ar 41039) and paratypes 5♀ (IZCAS-Ar 41040~41044) Thailand: Khon Kaen Province, Chum Phae District, Nanoog Toom Subdistrict, Nagarat Cave (16.81402°N, 101.95663°E; 531 m alt.), 30.IX.2016, H. Zhao et al. leg.; 1♂ 3♀ (NHMSU-HA087), same data as holotype; 1♂ (NHMSU-HA087) and 1♀ (NHMSU-HA087) used for sequencing, GenBank: MW970240 and MW970239, same data as for preceding.

Etymology.

The specific epithet derives from the type locality; noun in apposition.

Diagnosis.

The male of P. nagarat sp. nov. can be distinguished from that of other congeners by having a bifurcate, sclerotised median apophysis and a pyramidal tegular process and lacking a conductor (Fig. 9A and B ) vs. lacking a median apophysis (or if present, it is not furcate) and/or having a conductor (Figs 1D , 4D , 7A and 14A ). The female is similar to that of P. jidanweishi in the configuration of the vulva, but it differs by having a triangular parmula and the spermathecae are closer together, rather than a finger-like scape and more widely separated spermathecae (cf. Figs 9C-F and 7C-F ).

Description.

Male (IZCAS-Ar 41039). Total length 0.60. Carapace 0.24 long, 0.28 wide, 0.32 high. Clypeus 0.14 high. Sternum 0.20 long, 0.20 wide. Abdomen 0.44 long, 0.44 wide, 0.48 high. Length of legs: I 1.06 (0.32, 0.12, 0.22, 0.16, 0.24); II 0.92 (0.26, 0.12, 0.18, 0.14, 0.22); III 0.70 (0.22, 0.10, 0.12, 0.12, 0.14); IV 0.80 (0.26, 0.10, 0.16, 0.12, 0.16).

Somatic characters (Fig. 8A-C ). Colouration: body pale yellow, opisthosoma darker than prosoma, slightly grey on abdominal ventre and posterior. Leg colour a gradient, pale from femora and patella, darkening distally to dark greyish. Prosoma: carapace wider than long, dorsally oval. Eyes subequal in size. ALE protruded, PER straight, PME separated by ~ ⅓ their diameter. Cephalic part with 2 setae apically, vertical anteriorly, sloped posteriorly. Chelicerae anterior surface flat. Labium semi-circular. Sternum slightly plump, smooth, with a few setae. Legs: patella with 1 long disto-dorsal seta, tibia with 1 proximal and 1 mesal long dorsal seta. Tibia II with 2 ventral clasping spines subdistally, 1 thick and 1 thin (Fig. 8C ). Opisthosoma: globular cuticle with sparse, long, black setae. Spinnerets grey.

Palp (Fig. 9A and B ): relatively large, ~ ½ of carapace size. Femur swollen, nearly as wide as long. Patella short, narrower than femur. Tibia flat and lamellar, length equal to ~ 2 × patella. Cymbium wrapping around bulb prolaterally and ventrally, its distal extension forming triangular lamina, with 2 long setae distally. Tegulum broad, rugose, with pyramidal process. Median apophysis strongly sclerotised, bifurcate distally. Sperm duct thin, faintly visible. Embolus long, slender, with a circuitous course in basal haematodocha and tegulum. Embolus filiform, protrudes from under cymbial extension, snaking to apex of tegulum.

Female (IZCAS-Ar 41040). Total length 0.64. Carapace 0.32 long, 0.28 wide, 0.28 high. Clypeus 0.10 high. Sternum 0.20 long, 0.20 wide. Abdomen 0.44 long, 0.44 wide, 0.44 high. Length of legs: I 0.90 (0.28, 0.12, 0.18, 0.14, 0.18); II 0.86 (0.26, 0.12, 0.16, 0.12, 0.20); III 0.66 (0.18, 0.10, 0.10, 0.10, 0.18); IV 0.82 (0.28, 0.12, 0.14, 0.10, 0.18).

Somatic characters (Fig. 8D-F ). Colouration: same as in male. Prosoma: carapace ovate dorsally. Ocular area slightly more anterior than in male. Cephalic part slightly lower than in male. Legs: colour of tibia, metatarsi and tarsi darker than in male. Opisthosoma: same as in male.

Epigyne (Fig. 9C-F ): weakly sclerotised, with a few setae medially, internal structures of vulva faintly visible via the cuticle. Parmula large, triangular, protruded ventrally. Copulatory openings located on the bilateral corners of parmula base. Spermathecae oval, distally tilted slightly downwards. Copulatory ducts mostly membranous and rugose. Proximal portion of copulatory ducts weakly sclerotised, originating at ventrolateral corners of parmula base, distal portion connected to the posterolateral margin of spermathecae. Fertilisation ducts short, starting at the anterolateral margin of spermathecae.

Distribution.

Thailand (Fig. 23 ).

Figures

Figure 1. Patu catba sp. nov. A male habitus, dorsal B male habitus, ventral C male habitus, lateral D male palp, prolateral E male palp, retrolateral. Abbreviations: Co = conductor; Cy = cymbium; E = embolus; Fe = femur; MA = median apophysis; Pa = patella; T = tegulum; Ti = tibia; TS = male clasping spines on tibia II. Scale bars: 0.50 (A-C); 0.10 (D, E).

Figure 4. Patu damtao sp. nov. A male habitus, dorsal B male habitus, ventral C male habitus, lateral D male palp, prolateral E male left palp, retrolateral. Abbreviations: Co = conductor; Cy = cymbium; E = embolus; Pa = patella; T = tegulum; Ti = tibia; TS = male clasping spines on tibia II. Scale bars: 0.50 (A-C); 0.10 (D, E).

Figure 7. Patu jidanweishi A male palp, prolateral B male palp, retrolateral C epigyne, ventral D epigyne, lateral E vulva, ventral F vulva, dorsal. Abbreviations: CD = copulatory ducts; Cy = cymbium; E = embolus; FD = fertilisation ducts; Fe = femur; Pa = patella; S = spermathecae; Sp = scape; T = tegulum; Ti = tibia; TP = tegular process. Scale bars: 0.10 (A-F).

Figure 8. Patu nagarat sp. nov. A male habitus, dorsal B male habitus, ventral C male habitus, lateral D female habitus, dorsal E female habitus, ventral F female habitus, lateral. Abbreviation: TS = male clasping spines on tibia II. Scale bars: 0.50 (A-F).

Figure 9. Patu nagarat sp. nov. A male palp, prolateral B male palp, retrolateral C epigyne, ventral D epigyne, lateral E vulva, ventral F vulva, dorsal. Abbreviations: CD = copulatory ducts; CO = copulatory opening; Cy = cymbium; E = embolus; FD = fertilisation ducts; Fe = femur; MA = median apophysis; Pa = patella; Pl = parmula; S = spermathecae; T = tegulum; Ti = tibia; TP = tegular process. Scale bars: 0.10 (A-F).

Figure 14. Patu xiaoxiao A male palp, prolateral B male palp, retrolateral C epigyne, ventral D vulva, ventral E vulva, dorsal. Abbreviations: CD = copulatory ducts; Co = conductor; CO = copulatory opening; E = embolus; FD = fertilisation ducts; Fe = femur; MA = median apophysis; Pa = patella; Pl = parmula; S = spermathecae; T = tegulum; Ti = tibia; TP = tegular process. Scale bars: 0.10 (A-E).

Figure 23. Distribution records of fourteen species of genera Patu, Kirinua gen. nov. and Swilda gen. nov. in Asia 1 P. catba sp. nov. 2 P. dakou sp. nov. 3 P. damtao sp. nov. 4 P. jiangzhou sp. nov. 5 P. jidanweishi 6 P. nagarat sp. nov. 7 P. nigeri 8 P. putao sp. nov. 9 P. qiqi 10 P. xiaoxiao 11 K. maguai sp. nov. 12 K. yangshuo sp. nov. 13 S. longtou 14 S. spinathoraxi.