Otacilia striata, 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 : 52-53

Otacilia striata sp. nov. (AEȐŴṚff)

Figs 40–42

Type material. Holotype ♁, CHINA: Hunan Province: Xiangxi Tujia and Miao Autonomous Prefecture , Yongshun County, Bijiashan (28.983211°N, 109.813074°E, 331 m a.s.l.), 13 Nov. 2018, leg. Zhaoyi Li.

Paratypes: 1 ♁ 6 ♀, with same data as holotype .

Etymology. This specific name is derived from the Latin word “ striatus ”, referring to the longitudinal black stripe on carapace.

Diagnosis. This new species resembles O. acutangula Liu, 2020 in having a similarly shaped embolus, but can be recognized by: 1) the smaller and thinner tegular apophysis (vs large and wide, cf. Fig. 41C and fig. 7D in Liu et al. [2020]), 2) the wider, dagger-shaped retrolateral tibial apophysis in retrolateral view, which is curved in dorsal view (vs thin and digitiform, not curved, cf. Fig. 41B, D and fig. 7E, F in Liu et al. [2020]), 3) the wider median septum (vs narrow, cf. Fig. 41E and fig. 8C in Liu et al. [2020]), 4) the slanted, slightly curved connecting tubes (vs straight, nearly transverse, cf. Fig. 41F and fig. 8D in Liu et al. [2020]).

Description. Male (Holotype): total length 2.85, carapace 1.37 long, 1.19 wide; abdomen 1.48 long, 0.96 wide. Eye sizes and interdistances:AME 0.08, ALE 0.09, PME 0.06, PLE 0.08; AME–AME 0.04, AME–ALE 0.01, ALE– ALE 0.21, PME–PME 0.09, PME–PLE 0.05, PLE–PLE 0.35, ALE–PLE 0.08. EAW 0.47, CRW 0.63, EAW/CRW 0.75, CRW/CW 0.53. MOA 0.25 long, anterior width 0.20, posterior width 0.26. CH 0.12, CH /AME 1.50. Labium 0.14 long, 0.21 wide. Sternum 0.82 long, 0.70 wide. Leg measurements: Ⅰ 5.55 (1.40+0.52+1.65+1.34+0.64), II 4.26 (1.15, 0.47, 1.15, 0.96, 0.56), III 3.76 (1.00, 0.43, 0.79, 1.00, 0.54), IV 5.73 (1.53, 0.45, 1.34, 1.62, 0.79). Spination: femora I–IV d 1, femur I pl 4, femur II pl 5, tibia Ⅰ pv 7 rv 8, tibia II pv 7 rv 7, metatarsus Ⅰ pv 4 rv 4, metatarsus II pv 4 rv 3.

Coloration. Carapace gray, with one black longitudinal stripe nearly same width as eye area. Abdomen gray, with a narrow and wedge shape dorsal scutum, large black pattern beside dorsal scutum, four black transverse stripes at posterior of abdomen ( Fig. 40A, B ). Legs gray-white.

Palp as in Figs 41A–D , 42A–C . Femoral apophysis well developed, nearly at middle of femur. Tibia about half length of femur. Prolateral tibial apophysis distinct, round. Retrolateral tibial apophysis base thick, extending towards retrolateral side, then folding upwards, dagger-shaped in retrolateral view, curved in dorsal view. Tegulum oval, wider than cymbium; tegular apophysis oxhorn-shaped in retrolateral view, located at tip of tegulum retrolaterally. Sperm duct distinct, tapering from retrolateral side of tegulum to embolus. Embolus wide, curved, almost L-shaped. Conductor absent.

Female (Paratype): total length 3.24, carapace 1.42 long, 1.26 wide; abdomen 1.82 long, 1.36 wide. Eye sizes and interdistances: AME 0.09, ALE 0.08, PME 0.07, PLE 0.09; AME–AME 0.03, AME–ALE 0.01, ALE–ALE 0.23, PME–PME 0.08, PME–PLE 0.05, PLE–PLE 0.34, ALE–PLE 0. 08. EAW 0.48, CRW 0.69, EAW/CRW 0.70, CRW/CW 0.55. MOA 0.25 long, anterior width 0.21, posterior width 0.25. CH 0.10, CH /AME 1.11. Labium 0.15 long, 0.22 wide. Sternum 0.89 long, 0.76 wide. Leg measurements: Ⅰ 5.58 (1.39, 0.58, 1.68, 1.34, 0.59), II 4.55 (1.22, 0.52, 1.18, 1.04, 0.59), III 3.84 (1.00, 0.42, 0.86, 0.97, 0.59), IV 5.82 (1.50, 0.53, 1.38, 1.62, 0.79). Spination: femur I d 2 pl 4, femora II–IV d 1, femur II pl 2, tibia Ⅰ pv 8 rv 8, tibia II pv 8 rv 7, metatarsus Ⅰ pv 4 rv 4, metatarsus II pv 4 rv 3. Legs yellow, with black annuli near tip of femora, patella, tibia I–IV. Other characters as in male, except carapace darker, abdomen lighter and dorsal scutum absent ( Fig. 40C, D ).

Epigyne as in Figs 41E–F , 42D–E . Epigynal plate sclerotized. Atrium separated into two parts, filled with mating plug. Median septum wide. Copulatory openings located at posterior margin of atrium. Copulatory ducts short, thick. Connecting tubes long, slightly curved. Glandular appendages small, mastoid-shaped. Bursa small, oval, transparent. Spermathecae oval, separated by their diameter. Fertilization ducts located at anterior margin of spermathecae.

Distribution. China (Hunan Province).

Figures

FIGURE 40. Habitus of Otacilia striata sp. nov.: A. Male holotype, dorsal view; B. Same, ventral view; C. Female paratype, dorsal view; D. Same, ventral view.

FIGURE 41. Copulatory organs of Otacilia striata sp. nov.: A. Male left palp, prolateral view; B. Same, retrolateral view; C. Same, ventral view; D. Same, dorsal view; E. Epigyne, ventral view; F. Same, dorsal view. Abbreviations: E—embolus; FA—femoral apophysis; PTA—prolateral tibial apophysis; RTA—retrolateral tibial apophysis; SD—sperm duct; TA—tegular apophysis; B—bursa; CO—copulatory opening; CD—copulatory duct; CT—connecting tube; FD—fertilization duct; GA— glandular appendage; MS—median septum; S—spermathecae.

FIGURE 42. Copulatory organs of Otacilia striata sp. nov.: A. Male left palp, ventral view; B. Same, retrolateral view; C. Same, dorsal view; D. Epigyne, ventral view; E. Same, dorsal view. Scale bars: 0.2 mm.