Tonsilla rutunda, Zhang & Irfan & Wang & Zhang, 2022

Zhang, Meng, Irfan, Muhammad, Wang, Lu-Yu & Zhang, Zhi-Sheng, 2022, Six new species of Tonsilla Wang & Yin, 1992 (Araneae: Agelenidae) from southern China, with the first description of the male of T. yanlingensis (Zhang, Yin & Kim, 2000), Zootaxa 5091 (2), pp. 357-372 : 362

publication ID	https://doi.org/ 10.11646/zootaxa.5091.2.7
publication LSID	lsid:zoobank.org:pub:68EB0115-26FA-4DEF-9564-699C5CCEFC66
DOI	https://doi.org/10.5281/zenodo.5844043
persistent identifier	https://treatment.plazi.org/id/03B6F12C-8612-F952-FF70-FEB9D6CE85DD
treatment provided by	Plazi
scientific name	Tonsilla rutunda
status	sp. nov.

Treatment

Tonsilla rutunda View in CoL sp. nov.

Figures 4A–E View FIGURE 4 , 9E–F View FIGURE 9 , 10 View FIGURE 10

Type material. Holotype ♂: CHINA, Guizhou Province, Rongjiang County, Jihua Township, Jihua Mountain , 25.69671667°N, 108.31598333°E, 1431 m, 21.IX.2014, T. Lu & H.M. Chen leg. (SWUC-T-AG-51-01) GoogleMaps ; Paratypes: 1 ♂ and 2 ♀, same data as holotype (SWUC-T-AG-51-02~04) GoogleMaps .

Etymology. The specific epithet derived from the Latin “ rutundus ” refers to the distal margin of conductor apex round; adjective.

Diagnosis. The male of this new species resembles T. subtruculenta sp. nov. and T. truculenta ( Zhu et al. 2017) in having a similar tegular sclerite and tibial apophysis of male palp, but can be distinguished by the following characters: patellar apophysis curved, overlapping the ventral margin of the tibia in retrolateral view in T. rutunda sp. nov. ( Fig. 4B, C View FIGURE 4 ), vs. orientated parallel to the tibial base in T. subtruculenta sp. nov. ( Fig. 6B, C View FIGURE 6 ) and oblique, extending above the tibia in T. truculenta ( Zhu et al. 2017, fig. 361E). Conductor longer than wide, apex somewhat round in ventral view in T. rutunda sp. nov. ( Fig. 4B View FIGURE 4 ), vs. bifurcated in T. subtruculenta sp. nov. ( Fig. 6B View FIGURE 6 ) and thumb-shaped in T. truculenta ( Zhu et al. 2017, fig. 361E). Proximal margin of median apophysis relatively round in retrolateral view in T. rutunda sp. nov. ( Fig. 4B, C View FIGURE 4 ), vs. longer than wide in both T. subtruculenta sp. nov. ( Fig. 6B, C View FIGURE 6 ) and T. truculenta ( Zhu et al. 2017, fig. 361E). Conductor’s dorsal apophysis rod-like situated below the conductor in retrolateral view in T. rutunda sp. nov. ( Fig. 4B, C View FIGURE 4 ), vs. curved clockwise and situated above the conductor in both T. subtruculenta sp. nov. ( Fig. 6B, C View FIGURE 6 ) and T. truculenta ( Zhu et al. 2017, fig. 361E). The female of T. rutunda sp. nov. can be distinguished from all congeners by the atrial ridges posteriorly with round projections; atrial margin outline inverted T-shaped; copulatory ducts sheet-like situated in between spermathecae posteriorly; spermathecae oval situated dorso-laterally in epigyne ( Fig. 4D, E View FIGURE 4 ).

Description. Male (holotype, Fig. 9E View FIGURE 9 ). Total length 12.73. Carapace 7.30 long, 4.57 wide; opisthosoma 5.24 long, 3.35 wide. Eye sizes and interdistances: AME 0.25, ALE 0.32, PME 0.27, PLE 0.30; AME–AME 0.15, AME– ALE 0.10, PME–PME 0.17, PME–PLE 0.27, ALE–PLE 0.11. MOA 0.74 long, front width 0.56, back width 0.71. Clypeus height 0.35. Leg measurements: I 19.11 (5.21, 6.19, 4.70, 3.01); II 16.77 (4.56, 5.14, 4.23, 2.84); III 15.23 (4.10, 4.66, 4.10, 2.37); IV 20.15 (5.37, 6.19, 5.66, 2.95). Spination of legs: femur I 220, II 230, III 140, IV 230; patella I-II 000, III-IV 020; tibia I 006, II 026, III-IV 046; metatarsus I 066, II 006, III 076, IV 0188.

Palp ( Fig. 4A–C View FIGURE 4 ). Patella almost equal to the length of patellar apophysis; patellar apophysis long, slightly curved, extending above the tibia in retrolateral view. Retrolateral and lateral tibial apophysis distinct and with blunt end. Cymbium approximately 3 times longer than wide; cymbial furrow extensively sclerotized, 1/3 of the cymbium length. Median apophysis spoon-like, proximal margin round. Conductor apex with two arms; upper arm short slightly curved with serrated end; lower arm longer than wide, ventrally grooved provided with sharp tooth, distal margin round extending forward. Conductor’s dorsal apophysis rod-like, with pointed end. Conductor lamella distinct. Embolus filiform, originating at the 6:30 o’clock position.

Female (one of the paratypes, Fig. 9F View FIGURE 9 ). Total length 13.20. Carapace 6.08 long, 3.76 wide; opisthosoma 6.86 long, 4.51 wide. Eye sizes and interdistances: AME 0.18, ALE 0.29, PME 0.25, PLE 0.27; AME–AME 0.12, AME– ALE 0.11, PME–PME 0.12, PME–PLE 0.28, ALE–PLE 0.09. MOA 0.62 long, front width 0.48, back width 0.63. Clypeus height 0.20. Leg measurements: I 13.57 (3.79, 4.64, 2.96, 2.18); II 12.22 (3.54, 3.96, 2.83, 1.89); III 10.91 (3.10, 3.34, 2.74, 1.73); IV 15.04 (4.06, 4.83, 4.02, 2.13). Spination of legs: femur I 220, II 230, III 140, IV 320; patella I-II 000, III 020, IV 040; tibia I 016, II 026, III 046, IV 048; metatarsus I 046, II 026, III 086, IV 0106.

Epigyne ( Fig. 4D, E View FIGURE 4 ). Epigynal plate almost round, teeth situated anteriorly.Atrial ridges with round projections posteriorly. Epigynal hoods indistinct, located ventro-mesally.Atrium margin outline inverted T-shaped. Copulatory opening situated posteriorly under the atrial ridges projections. Copulatory ducts sheet-like situated in between spermathecae. Spermathecae oval situated dorso-laterally, separated by a distance slightly more than of their length.

Distribution. China (Guizhou) ( Fig. 10 View FIGURE 10 ).