Ageleradix dulong Mu, Wang & Zhang, 2025

Ageleradix dulong Mu, Wang & Zhang sp. nov.

Chinese name: 独龙盾漏斗蛛 Figs 1 View Figure 1 , 2 View Figure 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 GoogleMaps . Paratypes: • 2 ♂ 1 ♀, with same data as holotype GoogleMaps . • 1 ♀, Hapang waterfall ; 27°40'43.66"N, 98°16'13.25"E, elev. 1156 m, leg. L. Y. Wang GoogleMaps .

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 View Figure 1 , Fig. 5 E – G View Figure 5 , 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 View Figure 1 ) (vs. short, about 1 / 4 length of cymbium, Fig. 5 G View Figure 5 and fig. 10–12 in Zhang et al. 2008); 2) embolus (E) with wide base and curved tip (Fig. 1 D – F View Figure 1 ) (vs. thin base and straight tip, Fig. 5 F View Figure 5 and fig. 11 in Zhang et al. 2008); 3) conductor (C) tongue-shaped with narrow tip (Fig. 1 D – F View Figure 1 ) (vs. not tongue-shaped, with wider tip, Fig. 5 F, G View Figure 5 and fig. 12 in Zhang et al. 2008); 4) scape (Sc) extending posteriorly to the center of atrium (Fig. 2 C View Figure 2 ) (vs. scape extending to posterior edge of atrium, Fig. 5 C View Figure 5 and fig. 14 in Zhang et al. 2008); and 5) spermathecae (S) kidney-shaped (Fig. 2 D View Figure 2 ) (vs. spherical, Fig. 5 D View Figure 5 fig. 16 in Zhang et al. 2008).

Description.

Male (holotype, Fig. 2 A View Figure 2 ). 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 View Figure 1 ). 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 View Figure 2 ). 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 View Figure 2 ). 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.