Stenohya jiahensis Li & Shi, 2023

Zhao, Jiaqi, Guo, Xiangbo, Gao, Zhizhong & Zhang, Feng, 2025, Review of the pseudoscorpion genus Stenohya Beier, 1967 from China (Pseudoscorpiones, Neobisiidae), European Journal of Taxonomy 993, pp. 1-104 : 43-51

Stenohya jiahensis Li & Shi, 2023 (佳«狭伪$)

Figs 1.21 , 31–36 , 69L , 70D , 71C

Stenohya jiahensis Li & Shi, 2023: 390–392 , figs 2, 3b.

Diagnosis

Male pedipalpal femur with a large intumescence on the subbasal prolateral surface, a small intumescence and a columniform intumescence on the median prolateral surface, and a projection on the subterminal prolateral surface ( Fig. 33D–E ); chelal hand with 40–42 triangular-shaped, spinous apophyses on the dorsal side ( Fig. 33F ). Female pedipalpal movable chelal finger length 1.86–1.87 mm.

Material examined

Other material

CHINA • 10 ♂♂, 8 ♀♀; Guangxi Zhuang Autonomous Region, Lingui District, Lingui Town, Jiahe Garden ; 25°14′51″ N, 110°12′03″ E; 267 m a.s.l.; 14 Jan. 2024; in leaf litter ( Fig. 2F ); Jiaqi Zhao, Jianzhou Sun and Yiting Xu leg.; Ps.- MHBU-GX2024011401–18 • five tritonymphs; Guangxi Zhuang Autonomous Region, Lingui District, Lingui Town, Jiahe Garden ; 25°14′51″ N, 110°12′04″ E; 162 m a.s.l.; 2 Dec. 2023; in leaf litter; Jiaqi Zhao, Jianzhou Sun, Tao Zheng and Songtao Shi leg.; Ps.- MHBU-GX2023120201–05

Description

Adult males ( Figs 31A , 32A )

CARAPACE ( Figs 33A , 69L ). Carapace 1.26–1.28 times as long as broad, with a total of 27–28 setae, including six near anterior margin and 5–6 near posterior margin; four corneate eyes; six lyrifissures near the anterior margin, three lyrifissures near posterior margin; epistome triangular, with heavily rounded apex. Carapace with elevations in the middle of the eye area and near middle of carapace in lateral view.

CHELICERA ( Fig. 33B ). Hand with six setae and two lyrifissures, movable finger with one seta; fixed finger with 12–17 teeth; movable finger with five teeth; serrula exterior with 37–38 lamellae; serrula interior with 31–33 lamellae; galea developed, divided into two main branches, one branch secondarily divided into four terminal rami, the other branch secondarily divided into three terminal rami; rallum consisting of seven blades, all with anteriorly-directed spinules, the basalmost blade shortest.

PEDIPALPS ( Figs 33D–F ). Apex of pedipalpal coxa rounded, with five long setae; femur with a big intumescence on the subbasal prolateral surface, a small intumescence and a columniform intumescence on the median prolateral surface, as well as a projection on the subterminal prolateral surface ( Fig. 33D– E ); chelal hand with 40–42 triangular-shaped, spinous apophyses on the dorsal side, each apophysis with a seta at the base, a few spinous apophyses extended to the subbase of fixed finger ( Fig. 33E– F ). Trochanter 1.76–1.88, femur 4.61–4.77, patella 4.09–4.37, chela (with pedicel) 5.30–5.80, chela (without pedicel) 4.93–5.35 times as long as broad, movable finger 1.43–1.63 times as long as hand (without pedicel). Fixed chelal finger with eight, movable finger with four trichobothria: eb, esb, ib and isb located basally of fixed chelal finger, est, et and it situated distally of fixed chelal finger; ist closer to et -est -it than to eb -esb -isb -ib 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; venom apparatus present only in fixed chelal finger, venom duct short; fixed finger with 85–94 pointed teeth, movable finger with 76–78 teeth: 30–32 rounded teeth at base and 44–48 pointed in distal position.

ABDOMEN. Pleural membrane granulated. Tergal chaetotaxy (I–XI): 4–5: 5–8: 8:9:10: 9–10:10– 11: 11:12: 10–11: 8–9, sternal chaetotaxy (IV–XI): 18–22: 20–22:16–19: 18–21: 19–21: 14–16: 12:4. Sternites VI–VIII with 10–15 medial scattered glandular setae. Genital area ( Fig. 33C ): sternite II with a total of 31–33 setae and 2 lyrifissures; sternite III with a row of 28–31 setae and 2 lyrifissures.

LEGS ( Fig. 33G–H ). Leg I: trochanter 1.03–1.10, femur 3.07–3.36, patella 2.90–3.19, tibia 4.18– 4.47, basitarsus 2.79–3.08, telotarsus 4.09–4.30 times as long as deep. Leg IV: trochanter 2.61–3.26, femur +patella 4.37–4.74, tibia 6.80–7.94, basitarsus 4.23–4.50, telotarsus 7.09 times as long as deep; tibia with two submedial tactile setae (TS= 0.67–0.68, 0.94–0.99), basitarsus with two tactile setae (TS =0.22–0.40, 0.82–0.91), telotarsus with two tactile setae (TS =0.09–0.21, 0.56–0.58); subterminal tarsal seta distally branched. Arolium not divided, shorter than the slender and simple claws.

Adult females ( Figs 31B , 32B )

CARAPACE ( Figs 34A , 35A , 70D ). Carapace 1.07–1.09 times as long as broad, with a total of 28–30 setae, including 6–7 near anterior margin and 6–7 near posterior margin; four corneate eyes; five lyrifissures near the anterior eyes, two lyrifissures near posterior margin. Carapace smooth and nearly rectangular.

CHELICERA ( Figs 34B , 35B ). Hand with seven setae and two lyrifissures; fixed finger with 17–19 teeth; movable finger with 11–16 teeth; serrula exterior with 43–45 lamellae; serrula interior with 33–38 lamellae; galea developed, divided into two main branches, one branch secondarily divided into five terminal rami, the other branch secondarily divided into three terminal rami ( Fig. 34E ); rallum consisting of 7–8 blades, all with anteriorly directed spinules, the basalmost blade shortest ( Fig. 34C ).

PEDIPALPS ( Figs 34G–I , 35C–D ). Apex of pedipalpal coxa rounded, with five long setae; femur straight, with a few tubercles prolaterally; patella claviform, smooth; chela smooth. Trochanter 1.71–2.00, femur 4.59–4.61, patella 3.41–3.49, chela (with pedicel) 3.91–4.16, chela (without pedicel) 3.77–3.99 times as long as broad, movable finger 1.53–1.58 times as long as hand (without pedicel). Fixed chelal finger with eight, movable finger with four trichobothria: eb, esb, ib and isb located basally of fixed chelal finger, est, et and it situated distally of fixed chelal finger; ist closer to et -est -it than to eb -esb -isb -ib 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; venom apparatus present only in fixed chelal finger, venom duct short; fixed chelal finger with 81–82 pointed teeth, movable finger with 78–80 teeth: 34–37 rounded teeth at base and 41–46 pointed teeth in distal position.

ABDOMEN. Pleural membrane granulated. Tergal chaetotaxy (I–XI): 4:6–8: 7–9:10: 10: 11–12: 10: 11– 13: 11–12: 11–12: 8–10, sternal chaetotaxy (IV–XI): 18–23:18–21: 17–21: 17–20: 17–20: 16–17:13– 14: 4. Sternites VI–VIII with 2–3 medial glandular setae. Genital area ( Figs 34F , 35E ): sternite II with a total of 26–28 setae and 2 lyrifissures; sternite III with a row of 26–28 setae and 2 lyrifissures.

LEGS ( Figs 34J–K , 35F–G ). Leg I: trochanter 1.03–1.13, femur 4.33–4.38, patella 3.15–3.26, tibia 4.67– 5.00, basitarsus 2.92–3.00, telotarsus 4.42–4.62 times as long as deep. Leg IV: trochanter 2.22–2.52, femur +patella 3.57–4.56, tibia 5.91–7.37, basitarsus 3.67–3.71, telotarsus 6.15–7.33 times as long as deep; tibia with 2 tactile setae (TS=0.68–0.71, 0.94–0.99), basitarsus with two tactile setae (TS =0.18, 0.88–0.89); telotarsus with two tactile setae (TS=0.18–0.25, 0.56–0.64); subterminal tarsal seta distally branched ( Fig. 34D ). Arolium not divided, shorter than the slender and simple claws.

Tritonymphs ( Fig. 31C )

CARAPACE ( Figs 36A , 71C ). Carapace 1.02–1.09 times as long as broad, with a total of 27 setae, including five near anterior margin and six near posterior margin; six lyrifissures near the eyes, four lyrifissures near posterior margin; epistome small, triangular, with rounded top; with four corneate eyes. Carapace smooth.

CHELICERA ( Fig. 36B ). Hand with six setae and two lyrifissures, movable finger with one seta; fixed finger with 10–14 teeth; movable finger with 4–7 teeth; serrula exterior with 33–36 lamellae; serrula interior with 30–31 lamellae; galea developed, divided into two main branches, one branch secondarily divided into four terminal rami, the other branch secondarily divided into three terminal rami; rallum consisting of seven blades, all with anteriorly directed spinules, the basalmost blade shortest.

PEDIPALPS ( Fig. 36C–D ). Apex of pedipalpal coxa rounded, with four long setae. Femur with some small tubercles in the prolateral position in dorsal view; patella and chelal hand smooth. Trochanter 1.75–1.86, femur 4.44–4.58, patella 3.14–3.20, chela (with pedicel) 4.04–4.27, chela (without pedicel) 3.87–4.04 times as long as broad, movable finger 1.44–1.68 times as long as hand (without pedicel). Fixed chelal finger with seven, movable chelal finger with three trichobothria: eb and esb situated basally, grouped very closely with ib; est, et and it grouped distally; ist closer to et -est -it than to eb -esb -ib in fixed chelal finger; b situated in basal half, st and t close to each other in distal half of movable finger. Venom apparatus present only in fixed chelal finger, venom duct short. Fixed chelal finger with 68–69 pointed teeth, movable finger with 62–63 teeth: 25–27 rounded teeth at base and 35–38 pointed teeth in distal position.

ABDOMEN. Pleural membrane granulated. Tergites and sternites undivided, tergal chaetotaxy (I–XI): 4: 6: 8–9: 7–10: 8–10: 8–9: 8–12: 11–12:11: 10–11: 5–8, sternal chaetotaxy (IV–XI): 15–18:19– 20: 20–21: 18–19:17–18: 15–16: 12–13: 4, sternites VI–VIII with 2–3 medial glandular setae, anal cone with two dorsal and two ventral setae. Genital area ( Fig. 36E ): anterior genital sternite with 5–6 setae and two lyrifissures; posterior genital sternite with 14–18 setae and two lyrifissures.

LEGS ( Fig. 36F–G ). Leg I: trochanter 1.19–1.24, femur 3.71–3.94, patella 3.00–3.23, tibia 3.46–4.18, basitarsus 2.40–2.70, telotarsus 3.00–4.10 times as long as deep. Leg IV: trochanter 2.10–2.68, femur +patella 4.15–4.23, tibia 5.56–5.87, basitarsus 3.36–3.50, telotarsus 4.62–5.64 times as long as deep; tibia with two submedial tactile setae (TS=0.24–0.26, 0.62–0.68), basitarsus with two tactile setae (TS =0.14–0.17, 0.81–0.89), telotarsus with two tactile setae (TS =0.20–0.23, 0.52–0.56); subterminal tarsal seta distally branched. Arolium not divided, shorter than the slender and simple claws.

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

Males

Body length 3.97–4.24. Carapace 1.27–1.36/1.01–1.06. Pedipalpal trochanter 0.67–0.75/0.38–0.40, femur 1.66–1.67/0.35–0.36, patella 1.39–1.53/0.34–0.35, chela (with pedicel) 2.84–2.97/0.49–0.56, chela (without pedicel) 2.62–2.76/0.49–0.56, hand length (without pedicel) 1.12–1.16, movable finger length 1.66–1.83. Leg I: trochanter 0.33–0.34/0.30–0.33, femur 0.92–0.94/0.28–0.30, patella 0.83–0.87/0.26–0.30, tibia 0.67–0.71/0.15–0.17, basitarsus 0.37–0.39/0.12–0.14, telotarsus 0.43– 0.45/0.10–0.11. Leg IV: trochanter 0.60–0.62/0.19–0.23, femur +patella 1.47–1.53/0.31–0.35, tibia 1.27–1.36/0.16–0.20, basitarsus 0.54–0.55/0.12–0.13, telotarsus 0.78/0.11.

Females

Body length 4.18–4.86. Carapace 1.31–1.32/1.20–1.23. Pedipalpal trochanter 0.72–0.82/0.41–0.42, femur 1.75–1.79/0.38–0.39, patella 1.40–1.43/0.41, chela (with pedicel) 3.04–3.05/0.73–0.78, chela (without pedicel) 2.91–2.94/0.73–0.78, hand length (without pedicel) 1.18–1.22, movable finger length 1.86–1.87. Leg I: trochanter 0.30–0.36/0.29–0.32, femur 0.91–0.92/0.21, patella 0.62–0.63/0.19–0.20, tibia 0.70/0.14–0.15, basitarsus 0.35–0.36/0.12, telotarsus 0.51–0.53/0.11–0.12. Leg IV: trochanter 0.60–0.73/0.27–0.29, femur +patella 1.64/0.36–0.46, tibia 1.36–1.40/0.19–0.23, basitarsus 0.52– 0.55/0.14–0.15, telotarsus 0.80–0.88/0.12–0.13.

Tritonymphs

Body length 2.61–3.40. Carapace 0.85–0.87/0.78–0.85. Pedipalpal trochanter 0.49–0.52/0.28, femur 1.19–1.20/0.26–0.27, patella 0.88–0.96/0.28–0.30, chela (with pedicel) 2.14–2.18/0.51–0.53, chela (without pedicel) 2.05–2.06/0.51–0.53, hand length (without pedicel) 0.81–0.85, movable finger length 1.22–1.36. Leg I: trochanter 0.25–0.26/0.21, femur 0.63/0.16–0.17, patella 0.42–0.45/0.13–0.15, tibia 0.45–0.46/0.11–0.13, basitarsus 0.24–0.27/0.10, telotarsus 0.36–0.41/0.10–0.12. Leg IV: trochanter 0.44–0.51/0.19–0.21, femur +patella 1.10–1.12/0.26–0.27, tibia 0.88–0.89/0.15–0.16, basitarsus 0.35– 0.37/0.10–0.11, telotarsus 0.60–0.62/0.11–0.13.

Distribution

China: Guangxi Zhuang Autonomous Region.

Remarks

Stenohya jiahensis was described from a single male specimen by Li & Shi (2023). In this study, more specimens from the type locality (Jiahe Garden in Lingui District, Guangxi, China), including 10 adult males, eight adult females and five tritonymphs, became available, allowing the first description of the female and tritonymph. Like some other species of Stenohya , S. jiahensis has sexually dimorphic pedipalps and leg I. The male pedipalpal femur has a big intumescence on the subbasal prolateral surface, a small intumescence and a columniform intumescence on the median prolateral surface, and a projection on the subterminal prolateral surface; the chelal hand has 40–42 triangular-shaped, spinous apophyses on the dorsal side, the chelal hand swells on the median dorsal side, while the female femur only has a few tubercles prolaterally. The male leg I has an enlarged patella, the tibia slightly bent, the basitarsus and telotarsus semi-fused, and the dividing line between the two segments visible, but absent in the female.

The female of S. jiahensis is similar to those of S. biverticis and S. hamata , but can be distinguished by the pedipalpal movable chelal finger length (1.86–1.87 vs 2.05–2.13 in S. biverticis and 1.53–1.67 in S. hamata ) ( Leclerc & Mahnert 1988).

Figures

Fig. 1. Distribution map of species of Stenohya Beier, 1967 from China. 1. Stenohya xiningensis Zhao, Zhang & Jia, 2011. 2. Stenohya setulosa Guo & Zhang, 2016. 3. Stenohya bomica Zhao & Zhang, 2011. 4. Stenohya spinata Zhan, Feng & Zhang, 2023. 5. Stenohya qianlei Zhao, Guo & Zhang sp. nov. 6. Stenohya gibba Zhao, Guo & Zhang, 2024. 7. Stenohya papillata Zhao, Guo & Zhang, 2024. 8. Stenohya margarita Zhao, Guo & Zhang sp. nov. 9. Stenohya guangmingensis Zhao, Guo & Zhang, 2024. 10. Stenohya jiaxiani Zhao, Guo & Zhang sp. nov. 11. Stenohya huangi Hu & Zhang, 2012. 12. Stenohya biverticis Zhao, Guo & Zhang sp. nov. 13. Stenohya pengae Hu & Zhang, 2012. 14. Stenohya hainanensis Guo & Zhang, 2016. 15. Stenohya curvata Zhao, Zhang & Jia, 2011. 16. Stenohya bicornuta Guo, Zang & Zhang, 2019. 17. Stenohya harveyi Zhao, Guo & Zhang sp. nov. 18. Stenohya arcuata Guo, Zang & Zhang, 2019. 19. Stenohya tengchongensis Yang & Zhang, 2013. 20. Stenohya meiacantha Yang & Zhang, 2013. 21. Stenohya jiahensis Li & Shi, 2023. 22. Stenohya cordata Zhao, Guo & Zhang sp. nov. 23. Stenohya ungulata Zhao, Guo & Zhang sp. nov. 24. Stenohya polygonia Zhao, Guo & Zhang sp. nov. 25. Stenohya dongtianensis Li & Shi, 2023.

Fig. 31. Stenohya jiahensis Li & Shi, 2023. A. Male (dorsal view) (Ps.-MHBU-GX2024011401). B. Female (dorsal view) (Ps.-MHBU-GX2024011402). C. Tritonymph (dorsal view) (Ps.-MHBU- GX2023120201). Scale bars: 2 mm.

Fig. 32. Live specimens of Stenohya jiahensis Li & Shi, 2023. A. Male. B. Female.

Fig. 33. Stenohya jiahensis Li & Shi, 2023, male (Ps.-MHBU-GX2024011401). A. Carapace, dorsal view. B. Right chelicera, dorsal view. C. Genital area, ventral view. D. Right pedipalpal femur, dorsal view. E. Right pedipalp, dorsal view. F. Right pedipalpal chela, lateral view. G. Right leg I, lateral view. H. Right leg IV, lateral view. Scale bars: A, C=0.5 mm; B =0.2 mm; D–H =1 mm.

Fig. 34. Stenohya jiahensis Li & Shi, 2023, female (Ps.-MHBU-GX2024011402). A. Carapace, dorsal view. B. Right chelicera, dorsal view. C. Rallum. D. Subterminal tarsal seta. E. Galea. F. Chaetotaxy of genital area, ventral view. G. Right pedipalpal chela, lateral view, showing trichobothriotaxy and teeth. H. Right pedipalpal chela, dorsal view. I. Right pedipalp (trochanter, femur and patella), dorsal view. J. Right leg I, lateral view. K. Right leg IV, lateral view. Scale bars: A, F =0.5 mm; B= 0.2 mm; C–E =0.1 mm; G–K =1 mm.

Fig. 35. Stenohya jiahensis Li & Shi, 2023, female (Ps.-MHBU-GX2024011402). A. Carapace, dorsal view B. Right chelicera, dorsal view C. Right pedipalp, dorsal view D. Right pedipalpal chela, lateral view E. Genital area, ventral view F. Right leg I, lateral view G. Right leg IV, lateral view. Scale bars: A, E= 0.5 mm; B=0.2 mm; C–D, F–G=1 mm.

Fig. 36. Stenohya jiahensis Li & Shi, 2023, tritonymph (Ps.-MHBU- GX2023120201). A. Carapace, dorsal view. B. Right chelicera, dorsal view. C. Left pedipalp, dorsal view. D. Left pedipalpal chela, lateral view. E. Genital area, ventral view. F. Right leg I, lateral view. G. Right leg IV, lateral view. Scale bars: A, E =0.5 mm; B =0.2 mm; C–D, F–G=1 mm.

Fig. 69. Male carapaces, lateral views (the red arrows indicate the elevation on the carapace). A. Stenohya curvata Zhao, Zhang & Jia, 2011. B. Stenohya huangi Hu & Zhang, 2012. C. Stenohya bicornuta Guo, Zang & Zhang, 2019. D. Stenohya meiacantha Yang & Zhang, 2013. E. Stenohya harveyi Zhao, Guo & Zhang sp. nov. F. Stenohya margarita Zhao, Guo & Zhang sp. nov. G. Stenohya xiningensis Zhao, Zhang & Jia, 2011. H. Stenohya pengae Hu & Zhang, 2012. I. Stenohya setulosa Guo & Zhang, 2016. J. Stenohya tengchongensis Yang & Zhang, 2013. K. Stenohya polygonia Zhao, Guo & Zhang sp. nov. L. Stenohya jiahensis Li & Shi, 2023. M. Stenohya jiaxiani Zhao, Guo & Zhang sp. nov. N. Stenohya spinata Zhan, Feng & Zhang, 2023. O. Stenohya dongtianensis Li & Shi, 2023.P. Stenohya qianleiZhao, Guo & Zhang sp. nov. Q. Stenohya papillata Zhao, Guo & Zhang, 2024. R. Stenohya ungulata Zhao, Guo & Zhang sp. nov. S. Stenohya cordata Zhao, Guo & Zhang sp. nov. T. Stenohya guangmingensis Zhao, Guo & Zhang, 2024. U. Stenohya biverticis Zhao, Guo & Zhang sp. nov. V. Stenohya gibba Zhao, Guo & Zhang, 2024. W. Stenohya hainanensis Guo & Zhang, 2016. X. Stenohya arcuata Guo, Zang & Zhang, 2019. Scale bars: 1 mm.

Fig. 70. Female carapaces, lateral views (the red arrows indicate the elevation on the carapace). A. Stenohya hainanensis Guo & Zhang, 2016. B. Stenohya harveyi Zhao, Guo & Zhang sp. nov. C. Stenohya huangi Hu & Zhang, 2012. D. Stenohya jiahensis Li & Shi, 2023. E. Stenohya pengae Hu & Zhang, 2012. F. Stenohya biverticis Zhao, Guo & Zhang sp. nov. G. Stenohya ungulata Zhao, Guo & Zhang sp. nov. H. Stenohya curvata Zhao, Zhang & Jia, 2011. I. Stenohya meiacantha Yang & Zhang, 2013. J. Stenohya qianlei Zhao, Guo & Zhang sp. nov. K. Stenohya tengchongensis Yang & Zhang, 2013. L. Stenohya bicornuta Guo, Zang & Zhang, 2019. M. Stenohya jiaxiani Zhao, Guo & Zhang sp. nov. N. Stenohya polygonia Zhao, Guo & Zhang sp. nov. O. Stenohya dongtianensis Li & Shi, 2023.P. Stenohya cordata Zhao, Guo & Zhang sp. nov. Q. Stenohya margarita Zhao, Guo & Zhang sp. nov. R. Stenohya guangmingensis Zhao, Guo & Zhang, 2024. S. Stenohya spinata Zhan, Feng & Zhang, 2023. T. Stenohya gibba Zhao, Guo & Zhang, 2024. U. Stenohya arcuata Guo, Zang & Zhang, 2019. V. Stenohya papillata Zhao, Guo & Zhang, 2024. Scale bars: 1 mm.

Fig. 71. Tritonymph carapaces, lateral views. A. Stenohya bomica Zhao & Zhang, 2011. B. Stenohya cordata Zhao, Guo & Zhang sp. nov. C. Stenohya jiahensis Li & Shi, 2023. Scale bars: 1 mm.

Fig. 2. Habitats of some species of Stenohya Beier, 1967. A. Stenohya polygonia Zhao, Guo & Zhang sp. nov. B. Stenohya margarita Zhao, Guo & Zhang sp. nov. C. Stenohya biverticis Zhao, Guo & Zhang sp. nov. D. Stenohya cordata Zhao, Guo & Zhang sp. nov. E. Stenohya harveyi Zhao, Guo & Zhang sp. nov. F. Stenohya jiahensis Li & Shi, 2023. G. Stenohya dongtianensis Li & Shi, 2023.