Lingulatus pingbian, Mu & Zhang, 2022

Mu, Yannan & Zhang, Feng, 2022, Lingulatus gen. nov., a new genus with description of three new species and one new combination (Araneae: Phrurolithidae), Zootaxa 5178 (3), pp. 265-277 : 274-277

Lingulatus pingbian sp. nov. (屏ṁfflfl)

Figs 1A–C , 7–8 , 9

Type material. Holotype ♂: CHINA: Yunnan Province: Hani-Yi Autonomous Prefecture of Honghe, Pingbian Miao Autonomous County, Daweishan National Forest Park (22°54′16.05″N, 103°41′23.13″E), 1944 m a.s.l., 10.VIII.2019, leg. Yannan Mu.

Paratypes: 3 ♂ 4 ♀, same data as holotype .

Etymology. The species name is derived from the type locality; noun in apposition.

Diagnosis. Males of this new species resemble L. longulus sp. nov. by the flake-shaped embolus and a long TS, but can be distinguished by: 1) the TS located on the ventral face of the tegulum (vs prolaterally); 2) the wide, flakeshaped embolus (vs narrow); and 3) the TA absent (vs triangular). This new species can also be distinguished from L. brevis sp. nov. by: 1) the long TS (vs short); 2) embolus flake shaped (vs acicular); 3) COs located at posterior (vs anterior); 4) CD and CT curved as “U” shaped (vs straight).

Description. Male (holotype): total length 2.88, carapace 1.47 long, 1.25 wide; abdomen 1.41 long, 0.96 wide. Carapace nearly round, black-brown, smooth, with longitudinal yellow-brown band, narrower than eye area. Fovea dark red, long, with several shapes resembling flowing water droplets beside fovea. Eye sizes and interdistances: AME 0.10, ALE 0.10, PME 0.08, PLE 0.09; AME–AME 0.02, AME–ALE 0.01, ALE–ALE 0.25, PME–PME 0.08, PME–PLE 0.04, PLE–PLE 0.36, ALE–PLE 0.07. EAW 0.50, CRW 0.70, EAW/CRW 0.71, CRW/CW 0.56. MOA 0.26 long, anterior width 0.23, posterior width 0.29. CH 0.13, CH /AME 1.30. Labium 0.15 long, 0.22 wide. Sternum 0.81 long, 0.77 wide. Abdomen dark brown, smooth, with medium-sized dorsal scutum, narrower than abdomen width and more than half length of abdomen. Several pale stripes vaguely visible on posterior of dorsal scutum. Transverse band of white hairs anterior to anal tubercle. Sternum yellow, without pattern. Labium and endites same color as sternum. Abdomen venter with slightly lighter color than sternum, with rows of transverse brown spots at middle part. Legs yellow.

Palp as in Figs 8A–D . FA strongly raised, thumb-shaped. vTA round, with short and thin tip on ventral side of tibia; RTA medium in size, with broad base and thin tip, tip curved upward; rDTA long and large, with broad base and tip curved prolaterally. Sperm duct distinct, “6”-shaped. Tegulum oval, tegular apophysis absent. TS long, originating on ventral part of tegulum, located at base of embolus, with small apophysis directed towards anterior, extending retro-posterior of tegulum. Embolus base wide, tip flake-shaped and slightly curved. Conductor absent.

Female (one paratype): total length 3.71, carapace 1.52 long, 1.25 wide; abdomen 2.19 long, 1.28 wide. Carapace nearly round, black, smooth, with longitudinal yellow-brown band, narrower than eye area. Fovea dark red, long, with several shapes resembling flowing water droplets beside fovea. Eye sizes and interdistances: AME 0.10, ALE 0.10, PME 0.09, PLE 0.09; AME–AME 0.02, AME–ALE 0.01, ALE–ALE 0.23, PME–PME 0.09, PME–PLE 0.04, PLE–PLE 0.33, ALE–PLE 0.06. EAW 0.47, CRW 0.79, EAW/CRW 0.59. CRW/CW 0.63. MOA 0.26 long, anterior width 0.22, posterior width 0.26. CH 0.10, CH /AME 1.00. Labium 0.16 long, 0.24 wide. Sternum 0.86 long, 0.81 wide. Abdomen blackish-gray, smooth, without dorsal scutum. Several light colored stripes vaguely visible on posterior of abdomen. Transverse band of white hairs anterior to anal tubercle. Sternum gray, with black margin. Labium and endites same color as sternum. Abdomen gray in ventral view. Legs yellow.

Epigyne as in Figs 8E–F . Epigynal plate weakly sclerotized. Copulatory openings small, round ( Fig. 5E ), located at posterior of epigynal plate, far to each other. Copulatory ducts thin, “U”-shaped; connecting tube wider than copulatory ducts, “U”-shaped. Glandular appendages short, mastoid-shaped. Bursa long, oval, poorly sclerotized. Spermathecae small, round, close to each other. Fertilization ducts located on anterior margin of spermathecae.

Leg measurements:

Leg spination:

Distribution. China (Yunnan Province)

Figures

FIGURE 1. Left chelicerae: A. Lingulatus pingbian sp. nov., retromarginal view (male holotype); B. Same, retromarginal view (female paratype); C. Same, promarginal view (female paratype); D. L. longulus sp. nov., retromarginal view (male holotype); E. L. brevis sp. nov., retromarginal view (male holotype); F. Same, retromarginal view (female paratype).

FIGURE 5. Habitus of Lingulatus longulus sp. nov.: A. Male holotype, dorsal view; B. Same, ventral view. Abbreviations: DS—dorsal scutum.

FIGURE 7. Habitus of Lingulatus pingbian sp. nov.: A. Male holotype, dorsal view; B. Same, ventral view; C. Female paratype, dorsal view; D. Same, ventral view.Abbreviations: DS—dorsal scutum.

FIGURE 8. Lingulatus pingbian sp. nov.: A. Male left palp, prolateral view; B. Same, ventral view; C. Same, retrolateral view; D. Same, retrolateral view; E. Epigyne, ventral view; F. Same, dorsal view. Abbreviations: E—embolus; FA—femoral apophysis; rDTA—retrodorsal tibial apophysis; RTA—retrolateral tibial apophysis; TS—tegular sheet; vTA—ventral tibial apophysis; B—bursa; CD—copulatory duct; CO—copulatory opening; CT—connecting tube; GA—glandular appendages; FD—fertilization duct; S—spermathecae.

FIGURE 9. Distribution of Lingulatus gen. nov., (triangle: L. longulus sp. nov.; square: L. pingbian sp. nov.; circle: L. brevis sp. nov.; pentagon: L. christae (Jäger & Wunderlich, 2012) comb. n.).