Ageleradix dulong Mu, Wang & Zhang 2025, sp. nov.
Creators: name: Mu, Yan-Nan
name: Wang, Lu-Yu
name: Ren, Tian-Yu
name: Tian, Yuan
name: Zhang, Zhi-Sheng
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Agelenidae
Ageleradix
Ageleradix dulong

description: Ageleradix dulong Mu, Wang & Zhang sp. nov.
Chinese name: 独龙盾漏斗蛛 Figs 1, 2
Type material.
Holotype • ♂, China, Yunnan Prov., Nujiang Lisu Auton. Pref., Gongshan Dulong and Nu Auton. Co., Dulong River, dangbanglaka; 27°49'38.85"N, 98°19'35.52"E, elev. 1430 m, 20.04.2024, leg. L. Y. Wang, et al. Paratypes: • 2 ♂ 1 ♀, with same data as holotype. • 1 ♀, Hapang waterfall; 27°40'43.66"N, 98°16'13.25"E, elev. 1156 m, leg. L. Y. Wang.
Etymology.
The specific name is derived from the Dulong River; noun in apposition.
Diagnosis.
The new species resembles A. schwendingeri in having similar median apophysis (MA) and retrolateral tibial apophysis (RTA) (cf. Fig. 1 D – F, Fig. 5 E – G, and figs 10–11 in Zhang et al. 2008), but can be differentiated from by: 1) palpal tibia long, about 2 / 3 length of cymbium (Fig. 1 D – F) (vs. short, about 1 / 4 length of cymbium, Fig. 5 G and fig. 10–12 in Zhang et al. 2008); 2) embolus (E) with wide base and curved tip (Fig. 1 D – F) (vs. thin base and straight tip, Fig. 5 F and fig. 11 in Zhang et al. 2008); 3) conductor (C) tongue-shaped with narrow tip (Fig. 1 D – F) (vs. not tongue-shaped, with wider tip, Fig. 5 F, G and fig. 12 in Zhang et al. 2008); 4) scape (Sc) extending posteriorly to the center of atrium (Fig. 2 C) (vs. scape extending to posterior edge of atrium, Fig. 5 C and fig. 14 in Zhang et al. 2008); and 5) spermathecae (S) kidney-shaped (Fig. 2 D) (vs. spherical, Fig. 5 D fig. 16 in Zhang et al. 2008).
Description.
Male (holotype, Fig. 2 A). Total length 10.91. Carapace: 4.94 long, 3.60 wide. Abdomen: 5.83 long, 3.28 wide. Eye sizes and interdistances: AME 0.28, ALE 0.32, PME 0.25, PLE 0.30, AME – AME 0.09, AME – ALE 0.07, PME – PME 0.17, PME – PLE 0.16, ALE – PLE 0.07. MOA: anterior width 0.59, posterior width 0.67, 0.70 long. Clypeus 0.37 long. Chelicerae with 3 promarginal and 3 retromarginal teeth. Leg measurements: I 28.48 (7.65, 9.13, 8.04, 3.66), II 24.64 (6.81, 7.61, 6.78, 3.44), III 21.29 (5.89, 6.23, 6.18, 2.99), IV 25.88 (6.67, 7.60, 8.03, 3.58). Carapace yellow, with U-shaped brown pattern. Cervical groove and radial groove distinct. Fovea short, slightly depressed. Abdomen ovoid, gray; cardiac mark red-brown; posterodorsal part of abdomen with 3 distinct chevrons. Anterior spinnerets shorter than basal segment of posterior-lateral spinnerets.
Palp (Fig. 1 A – F). Tibia about 2 / 3 length of cymbium, tibial apophysis (RTA) nubbly, extending towards dorsal part of cymbium. Cymbial tip long, about half length of cymbium. Bulb oval, about half length of cymbium. Tegulum with cuspides process (Tp) at middle of prolateral margin. Tegular apophysis (TA) transverse, tip round. Conductor (C) lamellar, heavily sclerotized, tongue-shaped, tip curved toward prolateral, with several sclerites at retro-surface. Radix (R) strongly sclerotized, tip blunt. Median apophysis (MA) straight, formed concavity in ventral view, with blunt end. Embolus (E) originating from anterior part of tegulum, hook-shaped in ventral view and S-shaped in prolateral view, tapering from base to tip.
Female (paratype, Fig. 2 B). Total length 14.34. Carapace: 5.74 long, 4.46 wide. Abdomen: 8.29 long, 5.22 wide. Eye sizes and interdistances: AME 0.34, ALE 0.37, PME 0.31, PLE 0.36, AME – AME 0.12, AME – ALE 0.09, PME – PME 0.24, PME – PLE 0.21, ALE – PLE 0.10. MOA: anterior width 0.72, posterior width 0.82, 0.87 long. Clypeus 0.49 long. Leg measurements: I 23.52 (6.47, 7.69, 5.93, 3.43), II 20.65 (5.83, 6.58, 5.19, 3.05), III 18.55 (5.43, 5.61, 4.98, 2.53), IV 23.91 (6.65, 7.51, 6.73, 3.02). All other somatic characters same as in male.
Epigyne (Fig. 2 C, D). Atrium oval, located posteriorly, binocular-shaped, anterior edge of atrium with kind of scape (Sc). Copulatory openings (CO) located anteromesally. Copulatory ducts (CD) transparent, membranous, “ 八 ” shaped. Spermathecae (S) kidney-shaped, located at posterior-lateral edge epigynal plate, spermathecal stalk (SS) tube-like, spermathecal head (SH) oval, anteriorly located in dorsal view. Fertilization ducts (FD) extending anteromesally.
Distribution.
Known only from the type locality.
description: Published as part of Mu, Yan-Nan, Wang, Lu-Yu, Ren, Tian-Yu, Tian, Yuan & Zhang, Zhi-Sheng, 2025, Review of the genus Ageleradix Xu & Li, 2007 (Araneae, Agelenidae), with descriptions of three new species, pp. 197-208 in ZooKeys 1236 on pages 197-208, DOI: 10.3897/zookeys.1236.143650