Yaginumia medog Mi & Wang, 2025
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publication ID |
https://doi.org/ 10.3897/zookeys.1223.139465 |
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publication LSID |
lsid:zoobank.org:pub:52BDCEAA-AE32-4D82-B646-84E3F02A2EA2 |
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DOI |
https://doi.org/10.5281/zenodo.14606298 |
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persistent identifier |
https://treatment.plazi.org/id/5A81C536-6DDB-5D01-B54F-0ACF603746D9 |
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treatment provided by |
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scientific name |
Yaginumia medog Mi & Wang |
| status |
sp. nov. |
Yaginumia medog Mi & Wang sp. nov.
Figs 1 View Figure 1 , 2 View Figure 2 , 7 View Figure 7
Type material.
Holotype: China • ♂; Xizang Autonomous Region, Medog County, Beibeng Township, De’ergong Village ; 29 ° 10.84 ' N, 95 ° 8.67 ' E; ca 1670 m elev.; 25. V. 2024; X. Q. Mi et al. leg.; TRU - Araneidae -326 GoogleMaps . Paratypes: 2 ♀♀; same data as for holotype; TRU - Araneidae -327 –328 GoogleMaps .
Etymology.
The species name is a noun derived from the type locality: Medog County.
Diagnosis.
The new species resembles Y. qiong sp. nov. in appearance and genitalia structures, but it can be distinguished as follows: 1) median apophysis strongly curled about 90 ° in ventral view (Fig. 2 C View Figure 2 ) vs slightly curled about 45 ° (Fig. 4 C View Figure 4 ); 2) basal part of paracybium ~ 2.1 × wider than distal part in retrolateral view (Fig. 2 B View Figure 2 ) vs ~ 3.4 × wider (Fig. 4 B View Figure 4 ); 3) copulatory openings arcuate (Fig. 1 A View Figure 1 ) vs almost rounded (Fig. 3 A View Figure 3 ); 4) spermathecae touching to each other (Fig. 1 C, D View Figure 1 ) vs separated (Fig. 3 C, D View Figure 3 ); and 5) legs with annuli (Fig. 1 E, H View Figure 1 ) vs lacking (Fig. 3 E, H View Figure 3 ).
Description.
Male (holotype, Figs 1 H – J View Figure 1 , 2 View Figure 2 ). Total length 3.20. Carapace 1.85 long, 1.35 wide. Abdomen 2.10 long, 1.45 wide. Clypeus 0.05 high. Eye sizes and interdistances: AME 0.13, ALE 0.08, PME 0.10, PLE 0.08, AME – AME 0.10, AME – ALE 0.10, PME – PME 0.05, PME – PLE 0.18, MOA length 0.30, anterior width 0.33, posterior width 0.25. Leg measurements: I 6.65 (1.85, 2.40, 1.70, 0.70), II 5.70 (1.60, 2.05, 1.40, 0.65), III 3.50 (1.10, 1.10, 0.75, 0.55), IV 4.55 (1.40, 1.55, 1.10, 0.50). Carapace dark brown in cephalic region and yellowish-brown in thoracic region. Cervical groove conspicuous. Chelicerae dark brown, with four promarginal and three retromarginal teeth. Endites and labium dark brown at base, with paler tip. Sternum dark brown. Legs yellow with brown annuli. Abdomen ~ 1.45 × longer than wide, dorsal folium extended from anterior to posterior, grayish-brown with white spots anteriorly. Venter abdomen yellow to yellowish-brown. Spinnerets yellowish-brown.
Pedipalp (Fig. 2 View Figure 2 ): tibia ~ 1.78 × longer than wide in ventral view; paracybium enlarged at base and lobe-like distally; tegular projection triangular, with toothed inner edge; median apophysis tapered and curled about 90 ° distally in ventral view; embolus almost straight, shorter than conductor; conductor membranous; terminal apophysis weakly sclerotized, covering embolus.
Female (paratype TRU - Araneidae -327 , Fig. 1 A – G View Figure 1 ). Total length 4.55. Carapace 2.10 long, 1.55 wide. Abdomen 2.90 long, 2.30 wide. Clypeus 0.05 high. Eye sizes and interdistances: AME 0.13, ALE 0.08, PME 0.13, PLE 0.08, AME – AME 0.13, AME – ALE 0.08, PME – PME 0.05, PME – PLE 0.20, MOA length 0.33, anterior width 0.35, posterior width 0.28. Leg measurements: I 6.75 (2.00, 2.45, 1.55, 0.75), II 5.80 (1.75, 2.05, 1.30, 0.70), III 3.85 (1.25, 1.30, 0.75, 0.55), IV 5.30 (1.70, 1.85, 1.15, 0.60). Habitus similar to that of male.
Epigyne (Fig. 1 A – D View Figure 1 ): ~ 1.57 × wider than long in ventral view; copulatory openings arcuate, situated on ventral surface; copulatory ducts twisted, about equal length to spermathecal diameter; spermathecae rounded, touching.
Variation.
Total length: ♀♀ 3.15–3.30 (N = 2).
Distribution.
China (Xizang).
Comment.
Judging from the broken vestige, we conclude it must have an epigynal scape.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.