Pimoa samyai Zhang & Li, sp. nov.

Zhang, Xiaoqing, Lan, Tianqi, Nie, Lei & Li, Shuqiang, 2020, Eight new species of the spider genus Pimoa (Araneae, Pimoidae) from Tibet, China, ZooKeys 940, pp. 79-104 : 79

publication ID

https://dx.doi.org/10.3897/zookeys.940.49793

publication LSID

lsid:zoobank.org:pub:A9CF0232-8E42-454E-8650-82A9D74346D6

persistent identifier

https://treatment.plazi.org/id/882578C9-D067-5732-9A45-B74E7C4CE999

treatment provided by

ZooKeys by Pensoft

scientific name

Pimoa samyai Zhang & Li, sp. nov.
status

 

Pimoa samyai Zhang & Li, sp. nov. Figures 12 View Figure 12 , 13 View Figure 13 , 16 View Figure 16

Type material.

Holotype: ♂ (IZCAS-Ar40333), China, Tibet, Lhoka, Samyai Town, along the way to Qingpu Practice Cave, 29.38°N, 91.55°E, elevation ca. 4231 m, 15.VIII.2018, X. Zhang and J. Liu leg. Paratypes: 1♂1♀ (IZCAS-Ar40334-Ar40335), same data as holotype; 2♀ (IZCAS-Ar40336-Ar40337), Lhoka, Aza Town, along the way to Zonggongbu Cave, 29.37°N, 91.32°E, elevation ca. 4389 m, 14.VIII.2018, X. Zhang and J. Liu leg.

Etymology.

The specific name is a noun in apposition taken from the type locality.

Diagnosis.

The male of Pimoa samyai sp. nov. resembles P. binchuanensis (see Zhang and Li 2019: 3, figs 1, 2) and P. crispa Hormiga, 1994 (see Hormiga 1994a: 63, figs 233-238; Hormiga 1994b: fig. 1A, B) but can be distinguished by the short and distally narrow cymbial denticulate process (Fig. 12B View Figure 12 , vs. long and distally wide in P. binchuanensis ; vs. distally wide in P. crispa ); distinguished from P. binchuanensis by the nearly L-shaped pimoid cymbial sclerite (Fig. 12B View Figure 12 , vs. nearly U-shaped); distinguished from P. crispa by a palpal tibia that is ca. 1/2 of the cymbial length (Fig. 12A-C View Figure 12 , vs. tibia almost the same length as cymbium). The female of P. samyai resembles P. crispa Hormiga, 1994 (see Hormiga 1994a: 63, figs 239-247) and P. indiscreta Hormiga, 1994 (see Hormiga 1994a: 66, figs 248-255) but can be distinguished by the distance between the pair of spermathecae which is ca. 1/2 the width of a spermatheca (Fig. 13C View Figure 13 , vs. separated by ca. 1/4 the width of a spermatheca in P. crispa and P. indiscreta ) and by the distally wide dorsal plate (Fig. 13C View Figure 13 , vs. distally narrow in P. crispa and P. indiscreta ).

Description.

Male (holotype): Total length 6.92. Carapace 3.33 long, 2.63 wide. Abdomen 3.59 long, 2.31 wide. Eye sizes and interdistances: AME 0.16, ALE 0.17, PME 0.15, PLE 0.16; AME-AME 0.14, AME-ALE 0.14, PME-PME 0.16, PME-PLE 0.19. Leg measurements: I: 31.92 (8.85, 10.06, 9.74, 3.27); II: 31.40 (8.33, 9.94, 9.99, 3.14); III: 19.81 (5.83, 6.03, 5.96, 1.99); IV: 25.77 (7.31, 8.27, 7.88, 2.31). Habitus as in Fig. 13E View Figure 13 . Carapace yellowish with black lateral margins; thoracic fovea and radial grooves distinct; sternum brownish. Abdomen black with yellowish transverse chevron bands. Legs brownish with black annulations, especially distinct on legs III and IV. Palp (Fig. 12A-C View Figure 12 ): patella short, ca. 1/2 of tibial length, with one retrolateral macroseta; tibia long, ca. 1/2 of cymbial length, with several macrosetae and a dorsal process; paracymbium short, ca. 1/3 of cymbial length, hook-shaped; pimoid cymbial sclerite nearly L-shaped, ca. 1/2 of cymbial length; cymbial denticulate process short and distally narrow, with more than ten cuspules; median apophysis indistinct; conductor distinct; pimoid embolic process pointed distally, longer than embolus; embolus beginning at the 5:30 o’clock position; embolic tooth absent.

Female (paratype): Total length 10.51. Carapace 4.81 long, 3.46 wide. Abdomen 5.70 long, 4.42 wide. Eye sizes and interdistances: AME 0.20, ALE 0.20, PME 0.19, PLE 0.19; AME-AME 0.16, AME-ALE 0.17, PME-PME 0.17, PME-PLE 0.23. Leg measurements: I: 31.73 (8.91, 10.51, 9.04, 3.27); II: 28.59 (7.95, 9.49, 8.14, 3.01); III: 20.19 (5.83, 6.54, 5.83, 1.99); IV: 26.85 (7.88, 8.97, 7.50, 2.50). Habitus as in Fig. 13F, G View Figure 13 . Carapace yellowish with black lateral margins; thoracic fovea and radial grooves distinct; sternum brownish. Abdomen yellowish with black parts. Legs brownish with distinct black annulations on all legs. Epigyne (Fig. 13A-D View Figure 13 ): triangular; ventral plate broad, length subequal to width; dorsal plate longer than wide, nearly tongue-shaped; copulatory openings distinct; spermathecae nearly oval, separated by ca. 1/2 width of spermatheca; fertilization ducts anteriorly oriented.

Distribution.

Known only from the type locality, Tibet, China (Fig. 16 View Figure 16 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pimoidae

Genus

Pimoa