Stenohya gaoi, Xiang & Zhang & Guo, 2025

Xiang, Liqi, Zhang, Feng & Guo, Xiangbo, 2025, Two new species of Stenohya Beier, 1967 from China (Pseudoscorpiones: Neobisiidae), Zootaxa 5729 (3), pp. 437-453 : 439-445

publication ID	https://doi.org/10.11646/zootaxa.5729.3.3
publication LSID	lsid:zoobank.org:pub:53C1EEAE-C053-486E-A88E-684CAD6203AA
persistent identifier	https://treatment.plazi.org/id/5D2E87EE-A11A-212D-30BC-FD05EBCBFD86
treatment provided by	Plazi
scientific name	Stenohya gaoi
status	sp. nov.

Treatment

Stenohya gaoi sp. nov.

Chinese name: ḀKÿ伪ḡ

Figs 2–6 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 .

Type material. Holotype male (Ps.- MHBU-GX2024013101 ), China: Guangxi Zhuang Autonomous Region, Nanning City, Liangfengjiang National Forest Park [ 22°43'30"N, 108°17'34"E], alt. 348.2 m a.s.l., 31 January 2024, Fan Gao leg. GoogleMaps Paratype 1 female (Ps.- MHBU-GX2024013102 ), same data as for holotype GoogleMaps .

Etymology. This new species is named in honor of Mr. Fan Gao, who collected the type specimens.

Diagnosis. Carapace with four well-developed eyes, epistome triangular. Male pedipalp without protuberant structures, surface smooth; femur 5.29 times longer than broad, fairly straight, without marked curvature; patella 4.03 times longer than broad; fixed chelal finger with 67 teeth, 36 rounded teeth at base, and 31 pointed ones in distal position; movable finger with 69 teeth, 63 rounded teeth at base, and 6 pointed ones in distal position. Female pedipalpal femur 3.67 times longer than broad, pedipalpal patella 3.94 times longer than broad.

Description. Adult male ( holotype) ( Fig. 2A View FIGURE 2 ).

Carapace ( Figs 3E View FIGURE 3 , 4C View FIGURE 4 ). Carapace smooth, without apparent elevation, 1.24 times longer than broad, with a total of 31 setae, including seven near anterior margin and nine near posterior margin; four lyrifissures near the eyes, two lyrifissures near posterior margin; epistome small, triangular, with pointed top ( Figs 3E View FIGURE 3 , 4C View FIGURE 4 ); four well-developed eyes.

Chelicera ( Figs 3B View FIGURE 3 , 4B View FIGURE 4 ). Hand with seven setae and one lyrifissure, movable finger with one seta; fixed finger with 10 teeth, movable finger with 18 teeth; serrula exterior with 31 lamellae, serrula interior with 35 lamellae; galea well-developed, divided into three main branches, each branch secondarily divided into two terminal rami ( Fig. 3C View FIGURE 3 ); rallum consisting of six blades, all with anteriorly directed spinules, the basalmost blade shortest ( Fig. 3D View FIGURE 3 ).

Pedipalps ( Figs 3A, G View FIGURE 3 , 4A, F View FIGURE 4 ). Apex of pedipalpal coxa rounded, with four setae. Femur straight, with few small tubercles on the surface; patella claviform and smooth, slightly recurved near the base; chela smooth, without spinous apophysis. Trochanter 1.93, femur 5.29, patella 4.03, chela with pedicel 3.80, chela without pedicel 3.52 times longer than broad, movable finger 1.35 times longer than hand without pedicel. Fixed chelal finger with eight, movable chelal finger with four trichobothria: eb and esb situated basally, grouped very closely with ib and isb; est, et and it grouped distally; ist situated medially between est -et -it and isb -ib -esb -eb in fixed chelal finger; b and sb situated closer to each other in basal half, st and t close to each other in distal half of movable finger. Fixed chelal finger with 67 teeth, 36 rounded teeth at base, and 31 pointed ones in distal position; movable finger with 69 teeth, 63 rounded teeth at base, and 6 pointed ones in distal position.

Abdomen. Pleural membrane granulated. Tergites and sternites undivided, tergal chaetotaxy (I–XI): 8: 9: 8: 8: 9: 9: 10: 10: 11: 11: 8, sternal chaetotaxy (IV–XI): 18: 23: 20: 17: 13: 15: 14: 8, sternites VI–VIII with 3–6 medial scattered glandular setae, anal cone with two dorsal and two ventral setae. Genital area ( Figs 3F View FIGURE 3 , 4D View FIGURE 4 ): anterior genital sternite with 26 setae and two lyrifissures; posterior genital sternite with 33 setae and two lyrifissures.

Legs ( Figs 3H, J View FIGURE 3 , 4E, G View FIGURE 4 ). Leg I smooth, without enlargement or projection; basitarsus and telotarsus not fused. Leg I: trochanter 1.11, femur 4.88, patella 3.53, tibia 4.92, basitarsus 4.75, telotarsus 5.50 times longer than deep. Leg IV: trochanter 2.00, femur + patella 5.38, tibia 8.15, basitarsus 5.10, telotarsus 6.30 times longer than deep; tibia with two tactile setae (TS = 0.71, 0.83), basitarsus with two tactile setae (TS = 0.47, 0.83), telotarsus with two tactile setae (TS = 0.27, 0.55); subterminal tarsal seta bifurcate ( Fig. 3I View FIGURE 3 ); arolium not divided, shorter than claws, claws slender and simple.

Adult female ( paratype) ( Fig. 2B View FIGURE 2 ). Mostly same as male, except where noted.

Carapace ( Figs 5B View FIGURE 5 , 6C View FIGURE 6 ). Carapace 1.21 times longer than broad, with a total of 28 setae, including seven near anterior margin and six near posterior margin; four lyrifissures near eyes, four lyrifissures near posterior margin.

Chelicera ( Figs 5C View FIGURE 5 , 6B View FIGURE 6 ). Fixed finger with 19 teeth, movable finger with nine teeth; serrula exterior with 36 lamellae, serrula interior with 31 lamellae; galea branching into two main branches, each branch secondarily divided into two terminal rami ( Fig. 5D View FIGURE 5 ); rallum with seven blades, all blades with anteriorly directed spinules, the basalmost blade shortest ( Fig. 5E View FIGURE 5 ).

Pedipalps ( Figs 5A, F View FIGURE 5 , 6A, D View FIGURE 6 ). Apex of pedipalpal coxa rounded, with four setae. Trochanter 2.11, femur 3.67, patella 3.94, chela with pedicel 4.00, chela without pedicel 3.78 times longer than broad, movable finger 1.58 times longer than hand without pedicel. Fixed chelal finger with 65 pointed teeth; movable finger with 52 teeth, 21 rounded teeth at base, and 31 pointed ones in distal position.

Abdomen. Tergal chaetotaxy (I–XI): 5: 7: 7: 10: 9: 11: 11: 9: 9: 9: 10, sternal chaetotaxy (IV–XI): 18: 19: 21: 19: 22: 20: 14: 5. Sternites VI–VIII with two medial scattered glandular setae. Genital area ( Figs 5G View FIGURE 5 , 6E View FIGURE 6 ): sternite II with total of 16 setae and two lyrifissures; sternite III with a row of 27 setae and two lyrifissures along posterior margin.

Legs ( Figs 5I, J View FIGURE 5 , 6F, G View FIGURE 6 ). Leg I: trochanter 1.45, femur 5.14, patella 4.15, tibia 5.70, basitarsus 4.50, telotarsus 4.88 times longer than deep. Leg IV: trochanter 3.11, femur + patella 4.90, tibia 8.69, basitarsus 4.18, telotarsus 6.89 times longer than deep; tibia with two tactile setae (TS = 0.73, 0.99), basitarsus with two tactile setae (TS = 0.53, 0.81), telotarsus with two tactile setae (TS = 0.31, 0.81). Subterminal tarsal seta bifurcate ( Fig. 5H View FIGURE 5 ); arolium not divided, shorter than claws, claws slender and simple.

Measurements (in mm; length/breadth or, for legs, length/depth).

Male ( holotype). Body length 3.41. Carapace 1.03/0.83. Pedipalpal trochanter 0.56/0.29, femur 1.48/0.28, patella 1.33/0.33, chela with pedicel 2.13/0.56, chela without pedicel 1.97/0.56, hand without pedicel length 0.89, movable finger length 1.21. Leg I: trochanter 0.29/0.20, femur 0.78/0.16, patella 0.53/0.15, tibia 0.59/0.12, basitarsus 0.38/0.08, telotarsus 0.44/0.08. Leg IV: trochanter 0.38/0.19, femur + patella 1.29/0.24, tibia 1.06/0.13, basitarsus 0.51/0.10, telotarsus 0.63/0.10.

Female ( paratype). Body length 4.89. Carapace 1.04/0.86. Pedipalpal trochanter 0.59/0.28, femur 1.10/0.30, patella 1.30/0.33, chela with pedicel 2.36/0.59, chela without pedicel 2.23/0.59, hand without pedicel length 0.86, movable finger length 1.36. Leg I: trochanter 0.32/0.22, femur 0.72/0.14, patella 0.54/0.13, tibia 0.57/0.10, basitarsus 0.36/0.08, telotarsus 0.39/0.08. Leg IV: trochanter 0.59/0.19, femur + patella 1.29/0.26, tibia 1.13/0.13, basitarsus 0.46/0.11, telotarsus 0.62/0.09.

Distribution. China: Guangxi.

Remarks. Male of this new species is similar to Stenohya hainanensis Guo & Zhang, 2016 , S. xiningensis , S. gruberi ( Ćurčić, 1983) , S. kashmirensis ( Schawaller, 1988) , S. mahnerti Schawaller, 1994 , S. martensi ( Schawaller, 1987) , but can be distinguished as follows: pedipalpal femur length 1.48 mm ( 2.13 mm in S. gruberi ), pedipalpal femur 5.29 times longer than broad (6.42 times in S. xiningensis ), pedipalpal patella 4.03 times longer than broad (3.44–3.71 times in S. hainanensis , 2.60 times in S. kashmirensis , 3.20 times in S. mahnerti , 5.60 times in S. martensi ) ( Schawaller 1987, 1988, 1994; Zhao et al. 2011; Guo & Zhang 2016). Female of this new species is similar to that of S. huangi Hu & Zhang, 2012 and S. pengae Hu & Zhang, 2012 , but can be distinguished as follows: pedipalpal femur 3.67 times longer than broad (5.18–5.83 times in S. pengae ), pedipalpal patella 3.94 times longer than broad (4.70–4.83 times in S. huangi ) ( Hu & Zhang 2012).