Plynnon aduncum Jin, Li & Zhang, 2022

Jin, Chi, Li, Xiaoling & Zhang, Feng, 2022, First record of the genus Plynnon Deeleman-Reinhold, 2001 from China, with the description of a new species (Araneae, Phrurolithidae), Biodiversity Data Journal 10, pp. 85029-85029 : 85029

publication ID	https://dx.doi.org/10.3897/BDJ.10.e85029
publication LSID	lsid:zoobank.org:pub:71EE9D86-E6AA-457A-91C8-DE02AFABAF5A
persistent identifier	https://treatment.plazi.org/id/32B7CC12-149A-484D-9689-FC7B9B104BEE
taxon LSID	lsid:zoobank.org:act:32B7CC12-149A-484D-9689-FC7B9B104BEE
treatment provided by	Biodiversity Data Journal by Pensoft
scientific name	Plynnon aduncum Jin, Li & Zhang
status	sp. n.

Treatment

Plynnon aduncum Jin, Li & Zhang sp. n.

Materials

Type status: Holotype. Taxon: scientificName: Plynnon aduncum; order: Araneae ; family: Phrurolithidae ; genus: Plynnon ; Location : country: China; stateProvince: Yunnan; county: Tengchong ; municipality: Baoshan ; locality: Shangying Village ; verbatimElevation: 1479; verbatimLatitude: 25.018151°N; verbatimLongitude: 98.687632°E; Event : year: 2017; month: 6; day: 10 Type status: Paratype. Taxon: scientificName: Plynnon aduncum; order: Araneae ; family: Phrurolithidae ; genus: Plynnon ; Location : country: China; stateProvince: Yunnan; county: Tengchong ; municipality: Baoshan ; locality: Shangying Village ; verbatimElevation: 1479; verbatimLatitude: 25.018151°N; verbatimLongitude: 98.687632°E; Event: year: 2017; month: 6; day: 11 GoogleMaps GoogleMaps GoogleMaps GoogleMaps

Description

Male (holotype) (Fig. 1 View Figure 1 A-D, Fig. 2 View Figure 2 and Fig. 4 View Figure 4 A-C). Total length 2.92: carapace 1.36 long, 1.07 wide, width/length 0.79; abdomen 1.56 long, 0.85 wide. Carapace oval, reddish-brown, with large dark markings on middle and rear; thoracic groove absent and fovea indistinct (Fig. 1 View Figure 1 A). Ocular area black; AER and PER recurved in dorsal view, AER slightly procurved in front view (Fig. 1 View Figure 1 C, D). Eye sizes and interdistances: AME 0.07, ALE 0.07, PME 0.04, PLE 0.07; AME-AME 0.04, AME-ALE 0.01, ALE-ALE 0.18, PME-PME 0.10, PME-PLE 0.05, PLE-PLE 0.28, ALE-PLE 0.05. OAW 0.37, CRW 0.53, OAW/CRW 0.70. CRW/carapace width 0.50. MOA 0.16 long, front width 0.17, back width 0.20. Clypeus height 0.14. Chilum (Fig. 1 View Figure 1 D) semicircular, sclerotized and dark brown. Chelicerae reddish-brown, anterior spines absent, with two promarginal and two retromarginal teeth. Endites brown. Labium dark brown and as wide as long (Fig. 1 View Figure 1 B). Sternum yellowish-brown, longer than wide, with dark margins and dark ribbed pattern in middle, precoxal triangles and intercoxal sclerites distinct (Fig. 1 View Figure 1 B). Leg I dark brown, with broad white band on 2/3 of tibia distally; legs II-IV light yellow, with balck stripes present on both sides of femora, patellae, tibiae and metatarsi. Measurements of legs: leg I 3.23 (0.93 + 0.37 + 0.77 + 0.64 + 0.52), II 3.01 (0.84 + 0.35 + 0.65 + 0.63 + 0.54), III 2.81 (0.77 + 0.34 + 0.58 + 0.61 + 0.51), IV 4.21 (1.14 + 0.14 + 0.92 + 1.00 + 0.74). Leg formula: 4123. Leg spination: tibiae: I plv 4 rlv 4, II plv 4 rlv 3; metatarsi: I-II plv 1 rlv 1. Abdomen long oval, black; anterior 2/3 with a narrow dorsal scutum and two pairs of inconspicuous transverse white bands (Fig. 1 View Figure 1 A).

Palp as illustrated (Fig. 2 View Figure 2 and Fig. 4 View Figure 4 A-C). Femur with a cup-shaped retrolateral distal boss; patellar and tibial apophyses absent. Tegulum pyriform, with an ovate subapical protrusion; sperm duct U-shaped and short, only present in apical half of tegulum. Embolus beak-shaped, with sharp tip pointed retrolaterally. Cymbium apically with a tuft of thick, flat setae around the apex of embolus.

Female (Fig. 1 View Figure 1 E-H, Fig. 3 View Figure 3 and Fig. 4 View Figure 4 D-E). Total length 3.61: carapace 1.42 long, 1.10 wide, width:length = 0.77; abdomen 2.19 long, 1.35 wide. Eye sizes and interdistances: AME 0.06, ALE 0.07, PME 0.04, PLE 0.07; AME-AME 0.05, AME-ALE 0.01, ALE-ALE 0.19, PME-PME 0.13, PME-PLE 0.05, PLE-PLE 0.31, ALE-PLE 0.06. OAW 0.39, CRW 0.69, OAW: CRW= 0.57. CRW: carapace width = 0.62. MOA 0.17 long, front width 0.17, back width 0.21. Clypeus height 0.12, 2 times AME diameter. Leg I dark brown, with broad white band on two-thirds of tibia distally (Fig. 3 View Figure 3 C-D). Measurements of legs: leg I 3.69 (1.06 + 0.42 + 0.89 + 0.69 + 0.63), II 3.38 (0.98 + 0.37 + 0.76 + 0.66 + 0.61), III 3.11 (0.85 + 0.37 + 0.66 + 0.68 + 0.55), IV 3.83 (1.33 + 0.42 + 0.11 + 1.17 + 0.80). Leg formula: 4123. Leg spination: tibiae: I plv 5 rlv 4, II plv 4 rlv 3; metatarsi: I-II plv 1 rlv 1. Abdomen with conspicuous transverse white bands (Fig. 1 View Figure 1 E). Other somatic characters as in male.

Epigyne (Fig. 3 View Figure 3 A and Fig. 4 View Figure 4 D): poorly sclerotized, spermathecae and copulatory ducts visible through translucent cuticle; copulatory openings small, located posteriorly, separated by about four spermatheca lengths. Vulva (Fig. 3 View Figure 3 B and Fig. 4 View Figure 4 E): copulatory ducts directed laterally, anterior part hook-shaped; bursae large, kidney-shaped, with sclerotized bases; spermathecae long oval, close to each other; connecting tubes curved, connecting bursal bases and spermathecae.

Diagnosis

The new species is similar to Plynnon zborowskii in having a pyriform palpal tegulum and the long oval spermathecae that have similar position, but can be distinguished by: 1) embolus beak-shaped (Fig. 2 View Figure 2 B and Fig. 4 View Figure 4 B) vs. S-shaped in P. zborowskii ( Deeleman-Reinhold 2001: 440, fig. 718); 2) femoral distal boss of male palp present (Fig. 2 View Figure 2 C and Fig. 4 View Figure 4 C) vs. absent in P. zborowskii ( Deeleman-Reinhold 2001: 440, fig. 719); 3) the position of copulatory openings is almost parallel to the bases of the bursae (Fig. 3 View Figure 3 A and Fig. 4 View Figure 4 D) vs. noticeably posterior in P. zborowskii ( Deeleman-Reinhold 2001: 440, fig. 720); 4) the middle part of the copulatory ducts almost straight (Fig. 3 View Figure 3 B and Fig. 4 View Figure 4 E) vs. folded in P. zborowskii ( Deeleman-Reinhold 2001: 440, fig. 720).