Pennalithus liaoning, Mu, Yannan & Zhang, Feng, 2023

Mu, Yannan & Zhang, Feng, 2023, Further additions to the guardstone spider fauna from China (Araneae: Phrurolithidae), Zootaxa 5338 (1), pp. 1-104 : 74-76

Pennalithus liaoning sp. nov. (ỀṪŢRff)

Figs 58–60

Type material. Holotype ♁, CHINA: Liaoning Province: Benxi City, Huanren Manchu Autonomous County, Wu’nv Mountain (41°18.597′N, 125°23.952′E, 360 m a.s.l.), 6 Jul. 2016, leg. Weitong Wang.

Etymology. This specific name is derived from the type locality; noun in apposition.

Diagnosis. This new species resembles P. splendidus (Song & Zheng, 1992) in having a similarly shaped retroventral tibial apophysis, but can be recognized by: 1) the thinner, needle-shaped embolus (vs thick, nubbyshaped, cf. Fig. 59C and fig. 3H in Kamura [2021]), and 2) the shorter, rod-like tegular apophysis (vs arc-shaped, cf. Fig. 59C and fig. 3K in Kamura [2021]).

Description. Male (Holotype): total length 2.58, carapace 1.23 long, 1.00 wide; abdomen 1.35 long, 0.74 wide. Eye sizes and interdistances:AME 0.08, ALE 0.08, PME 0.07, PLE 0.07; AME–AME 0.04, AME–ALE 0.01, ALE– ALE 0.20, PME–PME 0.04, PME–PLE 0.03, PLE–PLE 0.26, ALE–PLE 0.06. EAW 0.37, CRW 0.49, EAW/CRW 0.76, CRW/CW 0.49. MOA 0.22 long, anterior width 0.20, posterior width 0.20. CH 0.12, CH /AME 1.50. Labium 0.13 long, 0.18 wide. Sternum 0.71 long, 0.62 wide. Leg measurements: Ⅰ 4.96 (1.27, 0.44, 1.31, 1.17, 0.77), II 3.84 (1.03, 0.38, 0.89, 0.92, 0.65), III 3.35 (0.90, 0.34, 0.72, 0.86, 0.53), IV 5.57 (1.58, 0.42, 1.32, 1.47, 0.78). Spination: femur I d 2 pl 2, femora II–IV d 1, tibia Ⅰ pv 7 rv 7, tibia II pv 6 rv 5, metatarsus Ⅰ pv 4 rv 4, metatarsus II pv 4 rv 2.

Coloration. Carapace yellow, oval, radial striae distinct, with sparse iridescent scales in dorsal view. Abdomen darker in color than carapace, with large dorsal scutum covering nearly entire abdomen and sparse iridescent scales dorsally ( Fig. 58 ). Legs yellow.

Palp as in Figs 59–60 . Femoral apophysis protruding slightly, with several setae. Prolateral tibial apophysis distinct, arch-shaped. Retrolateral tibial apophysis base wide, narrowing abruptly at middle and tip digitiform; retroventral tibial apophysis nearly trapeziform. Tegulum narrower than cymbium, oval; tegular apophysis short rod-like. Sperm duct distinct, stomach-shaped, tapering from retrolateral side of tegulum to embolus. Embolus short, transverse. Conductor absent.

Female. Unknown.

Distribution. China (Liaoning Province).

Figures

FIGURE 58. Habitus of Pennalithus liaoning sp. nov.: A. Male holotype, dorsal view; B. Same, ventral view.

FIGURE 59. Male left palp of Pennalithus liaoning sp. nov.: A. Prolateral view; B. Ventral view; C. Retrolateral view; D. Dorsal view. Abbreviations: E—embolus; FA—femoral apophysis; PTA—prolateral tibial apophysis; RTA—retrolateral tibial apophysis; RvTA—retroventral tibial apophysis; SD—sperm duct; TA—tegular apophysis.

FIGURE 60. Male left palp of Pennalithus liaoning sp. nov.: A. Ventral view; B. Retrolateral view; C. Dorsal view. Scale bars: 0.2 mm.