Fengzhen mengla Lu & Li, 2023

Lu, Ying, Chu, Chang, Lin, Zixuan, Pham, Dinh-Sac, Li, Shuqiang & Yao, Zhiyuan, 2023, Two new genera and five new species of Corinnidae Karsch, 1880 (Arachnida, Araneae) from China and Vietnam, ZooKeys 1165, pp. 17-42 : 17

Fengzhen mengla Lu & Li sp. nov.

Figs 5 , 6

Type material.

Holotype: 1♂ (IZCAS-Ar 44420), China, Yunnan, Xishuangbanna, Mengla County, Menglun Town, Menglun Botanical Garden, Lvshilin, 21°54.609′N, 101°16.871′E, 663 m, hand catch in leaf litter, 14 November 2009, G. Tang and Z.Y. Yao leg. Paratypes: 1♂ (IZCAS-Ar 44421) and 1♀ (IZCAS-Ar 44422), same data as holotype.

Etymology.

The specific name refers to the type locality and is a noun in apposition.

Diagnosis.

See the generic diagnosis above.

Description.

Male (holotype; Fig. 6C, D ). Total body length 4.33: carapace 2.21 long, 1.66 wide; abdomen 2.12 long, 1.43 wide. Carapace reddish brown, obviously convex, highest before fovea, with dark marginal patterns; thoracic region almost round, cephalic region parallel-sided; radial and cervical grooves indistinct; fovea longitudinal, dark brown. Diameters of eyes: AME 0.14, ALE 0.13, PME 0.13, PLE 0.12. Eye interdistances: AME-AME 0.10, AME-ALE 0.05, PME-PME 0.13, PME-PLE 0.11, AME-PME 0.14, ALE-PLE 0.04. CRW/carapace width = 0.67. MOA 0.38 long, front width 0.32, back width 0.37. Clypeus height almost 1.5 ×diameter of AME. Chilum present, single, triangular, sclerotized and reddish brown. Chelicerae same color as carapace, with granular protrusions on surface, covered with short setae; with three promarginal teeth, six retromarginal teeth. Endites brown, longer than wide, subapically with membranous area, apical margin with long, curved setae. Labium brown, 0.28 long, 0.40 wide. Sternum brownish, shield-shaped, longer than wide. Sternum 0.98 long, 1.00 wide. Legs brown, but brownish on coxae. Measurements of legs: I - (1.67, 0.67, 1.34, 1.07, -), II 5.41 (1.52, 0.62, 1.18, 1.11, 0.98), III 5.33 (1.45, 0.62, 1.11, 1.26, 0.89), IV 6.19 (1.73, 0.64, 1.34, 1.69, 0.79). Leg spination: tibiae I with six pairs of ventral spines, II with four pairs of ventral spines, III and IV with three pairs of ventral spines; metatarsi I-III with two pairs of ventral spines, IV with three pairs of ventral spines. Abdomen ovoid, grey, with short purple stripes and reddish brown scutum covering 3/4 of dorsum surface, covered with black spots; venter yellowish, posteriorly with brown elliptical tracheal spiracle, covered with short, stout spines posteriorly. Spinnerets yellowish.

Palp (Fig. 5A-C ). Tibia with triangular prolateral tibial tubercle and spine-shaped ventral tibial apophysis, located in middle of tibia; retrolateral tibial apophysis absent. Cymbium long and narrow, retrolaterally with small outgrowth, and with deep furrow ventrally, extending to tip. Tegulum elongate-elliptical, 3/4 length of cymbium, with U-shaped sperm duct. Subtegulum exposed prolaterally. Embolus slender, spine-shaped, and almost straight.

Female (paratype; Fig. 6E, F ). Total body length 4.68: carapace 1.95 long, 1.56 wide; abdomen 2.73 long, 1.87 wide. Color and somatic morphology as in male, except as noted. Carapace yellowish. Diameters of eyes: AME 0.12, ALE 0.10, PME 0.11, PLE 0.12. Eye interdistances: AME-AME 0.07, AME-ALE 0.04, PME-PME 0.10, PME-PLE 0.10, AME-PME 0.13, ALE-PLE 0.06. CRW/carapace width = 0.59. MOA 0.34 long, front width 0.27, back width 0.30. Chilum brown. Endites, labium and sternum yellowish. Labium 0.26 long, 0.37 wide. Sternum 0.99 long, 0.96 wide. Measurements of legs: I 5.52 (1.62, 0.63, 1.27, 1.04, 0.96), II 5.17 (1.46, 0.56, 1.15, 1.07, 0.93), III 5.30 (1.44, 0.56, 1.11, 1.30, 0.89), IV 6.39 (1.73, 0.60, 1.43, 1.83, 0.80). Abdomen grey, with lavender spots and without dorsal scutum.

Epigyne (Fig. 6A, B ). Epigynal plate round, as wide as long, posteriorly with one membranous, nearly round hood. Vulva with large, elongate-elliptical spermathecae close to each other, and pair of fertilization ducts pointing antero-laterally. Copulatory opening round, situated at anterior part of epigynal plate. Copulatory ducts long and tubular, situated in middle of vulva.

Variation.

Paratype male: total body length 4.51.

Distribution.

China (Yunnan, type locality; Fig. 14 ).

Figures

Figure 5. Fengzhen mengla sp. nov., holotype male A-C palp A prolateral view B ventral view C retrolateral view. Abbreviations: E = embolus, PTT = prolateral tibial tubercle, SD = sperm duct, ST = subtegulum, VTA = ventral tibial apophysis. Scale bar: 0.20 mm.

Figure 6. Fengzhen mengla sp. nov., holotype male (C, D) and paratype female (A, B, E, F) A epigyne, ventral view B vulva, dorsal view C habitus, dorsal view D habitus, lateral view E habitus, dorsal view F habitus, ventral view. Abbreviations: CD = copulatory duct, CO = copulatory opening, FD = fertilization duct, H = hood, SP = spermathecae. Scale bars: 0.20 mm (A, B); 1.00 mm (C-F).

Figure 14. New distribution records of corinnid species from China and Vietnam 1 Allomedmassa tamdao sp. nov. 2 Echinax baisha sp. nov. 3 Fengzhen mengla sp. nov. 4 Medmassa lingshui sp. nov. 5 Peng birmanicus comb. nov. 6 Spinirta shaoguan sp. nov.