Ageleradix nangunhe Mu, Wang & Zhang sp. nov.

Chinese name: 南滚河盾漏斗蛛 Fig. 4

Type material.

Holotype • ♂, China, Yunnan Prov., Lincang City, Cangyuan Co., Nangunhe National Nature Reserve, Mengjiao station; 23°16'36.01"N, 99°11'24.13"E, elev. 1747 m, 29.09.2024, leg. Y. J. Cai and L. X. Cheng . Paratypes: • 2 ♀, with same data as holotype .

Etymology.

The specific name is derived from the type locality; noun in apposition.

Diagnosis.

The male of this new species resembles those of A. schwendingeri in having similarly shaped retrolateral tibial apophysis (RTA) and short tibia (cf. Fig. 4 E – G and Fig. 5 E – G, fig. 26 D in Zhu et al. 2017), but can be differentiated from it by: 1) embolus (E) long, filiform (Fig. 4 E – G) (vs. short, hooked, fig. 26 D in Zhu et al. 2017); and 2) conductor (C) membranous, with rounded tip (Fig. 4 E – G) (vs. strongly sclerotized, tip winding, Fig. 4 E – G and Fig. 5 E – G). The female of the new species resembles those of A. cymbiforma in having similarly shaped atrium located posteriorly (cf. Fig. 4 C and fig. 24 A in Zhu et al. 2017), but can be differentiated from it by: 1) septum (Sp) 2 times longer than wide (Fig. 4 C) (vs. narrow, more than 4 times longer than wide, fig. 24 A in Zhu et al. 2017); and 2) copulatory bursae (CB) balloon-shaped (Fig. 4 D) (vs. clavate, fig. 24 B in Zhu et al. 2017).

Description.

Male (holotype, Fig. 4 A). Total length 8.40. Carapace: 3.90 long, 2.82 wide. Abdomen: 4.90 long, 2.86 wide. Eye sizes and interdistances: AME 0.23, ALE 0.25, PME 0.19, PLE 0.25, AME – AME 0.08, AME – ALE 0.09, PME – PME 0.16, PME – PLE 0.13, ALE – PLE 0.11. MOA: anterior width 0.49, posterior width 0.56, 0.58 long. Clypeus 0.19 long. Chelicerae with 3 promarginal and 5 retromarginal teeth. Leg measurements: I 16.77 (4.37, 5.35, 4.42, 2.63), II 13.74 (3.80, 4.20, 3.50, 2.24), III 12.68 (3.46, 3.66, 3.64, 1.92), IV 17.07 (4.55, 5.08, 5.20, 2.24). Carapace yellow, with 2 rows of brown stripe. Cervical groove and radial groove distinct. Fovea short, slightly depressed. Abdomen ovoid, gray; cardiac mark red-brown. Anterior spinnerets shorter than basal segment of posterior-lateral spinnerets.

Palp (Fig. 4 E – G). Tibia shorter than cymbium, about 1 / 3 length of cymbium, with small retrolateral lump (bTA). Retrolateral tibial apophysis (RTA) nearly as long as tibia, nubbly, roundly bent dorsally. Cymbial tip about 1 / 5 width of median part of cymbium. Bulb oval. Tegulum with horseshoe-shaped apophysis (TA) located almost medially, retrolateral margin with subconical baso-prolateral process (Tp). Conductor (C) nubbly, extending posteriorly, bifurcated at tip. Radix (R) with sclerotized base and membranous, tongue-shaped tip. Median apophysis (MA) membranous, thumb-shaped. Embolus (E), with wide base, gradually tapering into filamentous embolus proper, roundly clockwise bent embolus proper as long as half of bulb, tip resting on 3 ' clock position.

Female (paratype Fig. 4 B). Total length 9.18. Carapace: 4.29 long, 3.17 wide. Abdomen: 5.28 long, 2.96 wide. Eye sizes and interdistances: AME 0.26, ALE 0.26, PME 0.23, PLE 0.25, AME – AME 0.09, AME – ALE 0.10, PME – PME 0.18, PME – PLE 0.14, ALE – PLE 0.11. MOA: anterior width 0.51, posterior width 0.59, 0.62 long. Clypeus 0.15 long. Chelicerae with 3 promarginal and 4 retromarginal teeth. Leg measurements: I 15.19 (4.06, 4.92, 3.74, 2.47), II 12.98 (3.66, 4.15, 3.21, 1.96), III 12.83 (3.56, 4.08, 3.34, 1.85), IV 17.42 (4.81, 5.21, 5.11, 2.29). Color darker than male, appearance of body similar as male.

Epigyne (Fig. 4 C – D). Atrium large, posteriorly located, with distinct scape (Sc) and septum (Se). Copulatory openings (CO) located anteromesally. Copulatory ducts (CD) transparent, membranous, sclerotiozed part encircling spermatecae. Copulatory bursae (CB) balloon-shaped, transparent. Spermathecae (S) spherical, located anteriorly. Spermathecal head (SH) clavate. Fertilization ducts (FD) long, well sclerotized extending to posterior of epigynal plate.

Distribution.

Known only from the type locality.