Clubiona subquebecana, Yu & Li, 2019

Yu, Hao & Li, Shuqiang, 2019, Eight new species of the genus Clubiona Latreille, 1804 from Xishuangbanna Rainforest, southwestern China (Araneae, Clubionidae), Zootaxa 4545 (2), pp. 151-178 : 174-177

Clubiona subquebecana sp. nov.

Figs 15–16

Type material. Holotype: 6 (IZCAS Ar 34685), CHINA: Yunnan: Xishuangbanna, Mengla County, Menglun Town , Menglun Nature Reserve , G 213 roadside, Secondary forest (N21°54.459', E101°16.755', 644 m), 20 November 2009, leg. G. Tang and Z. Y. Yao (Tang-Yao_No.14). Paratypes: CHINA: Yunnan: Xishuangbanna, Mengla County, Menglun Town, Menglun Nature Reserve , leg. G. Tang and Z. Y. Yao: 1 ♂ ( IZCAS Ar 34686), same data as holotype ; 1 ♂ 3 ♀ ( IZCAS Ar 34687–34690), Anogeissus acuminate plantation (N21°53.819', E101°17.075', 609 m), 27 November 2009 (Tang-Yao _ No. 28) ; leg. G. Zheng: 1 ♂ ( IZCAS Ar 34691), Secondary tropical seasonal moist forest (N21°54.390', E101°16.811', 612 m), 10 August 2007 (Fogging-JSIV) ; 1 ♂, 1 ♀ ( IZCAS Ar 34692–34693), Rubber plantation (N21°54.646', E101°16.257', 572 m), 16 July 2007 (Fogging-XZI) ; 2 ♀ ( IZCAS Ar 34694–34695), Rubber plantation (N21°54.463', E101°15.978', 569 m), 21 July 2007 (Fogging- XZIII) ; 1 ♀ ( IZCAS Ar 34696), Rubber plantation (N21°54.498', E101°16.326', 586 m), 17 July 2007 (Fogging- XZII) ; 1 ♀ ( IZCAS Ar 34697), Rubber plantation (N21°54.498', E101°16.326', 586 m), 16–29 February 2007 (Trunk traps XZII-3-03) ; 1 ♀ ( IZCAS Ar 34698), Rubber plantation (N21°54.684', E101°16.319', 585 m), 5–12 March 2007 ( Searching XZI-4-14) ; 1 ♂ ( IZCAS Ar 34699), Rubber-Tea plantation (N21°54.463', E101°15.978', 569 m), 1–15 February 2007 (Trunk traps J-CII-3-02) ; 1 ♂ ( IZCAS Ar 34700), Paramichelia baillonii plantation (N21°53.823', E101°17.072', 613 m), 16–31 March 2007 (Trunk traps RZIII-4-05) .

Etymology. The specific name is a Latin substantive referring to its similarity to Clubiona quebecana Dondale & Redner, 1976 , being a combination of the preposition sub (near) and the epithet of that species.

Diagnosis. Males of Clubiona subquebecana sp. nov. resemble those of C. quebecana ( Dondale & Redner 1976: 1157, figs 1–4) in having similarly shaped bulb with tanglesome sperm duct, but differ by: (1) retrolateral tibial apophysis with blunt tip ( Fig. 15B ) (apically pointed in C. quebecana ); (2) tip of embolus extending approximately four-fifth length of tegulum ( Figs 15B , D–E) (relatively shorter tip in C. quebecana ). Females resemble those of C. quebecana in having both spermathecae and bursae globular, the latter smaller than the former, but can be recognized by the copulatory ducts running parallelly in ventral view ( Figs 16 A–B) (copulatory ducts descending obliquely in C. quebecana ).

Description. Male (holotype): Total length 2.98; prosoma 1.26 long, 0.90 wide; opisthosoma 1.63 long, 0.84 wide. Prosoma ( Figs 16 E–F), oval, ocular area distinctly narrowed, widest between coxae II and III, in profile almost flat; integument smooth, clothed with short fine hairs. Carapace yellow except reddish ocular area, without distinct colour pattern. Chelicerae protruding brown, with three promarginal and four retromarginal teeth. Labium and endites colored as chelicerae, longer than wide. Sternum yellow. Eyes: in dorsal view, anterior eye row almost straight, posterior eye row slightly recurved, PER wider than AER. AME dark, other eyes light; with black rings. Eye sizes and interdistances: AME 0.06, ALE 0.05, PME 0.05, PLE 0.06, AME–AME 0.02, AME–ALE 0.06, PME–PME 0.17, PME–PLE 0.06, MOQL 0.10, MOQA 0.19, MOQP 0.28. Legs yellowish, without distinct color markings. Leg formula: IV, II, I, III; leg measurements: I 2.36 (0.69, 0.41, 0.61, 0.43, 0.22), II 2.54 (0.73, 0.35, 0.59, 0.62, 0.23), III 1.84 (0.58, 0.30, 0.36, 0.46, 0.14), IV 2.68 (0.81, 0.40, 0.74, 0.46, 0.27). Opisthosoma ( Figs 16 E–F) lanceolate, yellowish-white, dorsum without color marking; venter white; all spinnerets without distinct color marking. Palp ( Figs 15 A–E): tibia short, with single retrolateral apophysis, RTA thumb-like, small with blunt tip; genital bulb elongated, sperm duct sinuous; tegular hump indistinct and membranous, fusing with conductor; embolic base smooth, represented by a large sclerite, inserted at approximately 11 o’clock of tegulum; embolus distinctly long, flagelliform, slender, bent 90 degrees ventrally and angled across tegular apex, stretched proximally on groovelike conductor, extending basad more than three-fourths length of tegulum, terminating at approximately four o’clock position; conductor area relatively large, for approximately four-fifths the length of tegulum.

Female (paratype IZCAS Ar 34687): Total length 3.06; prosoma 1.09 long, 0.80 wide; opisthosoma 1.83 long, 1.12 wide. Not strikingly different from males but slightly darker in color ( Figs 16 G–H). Eye sizes and interdistances: AME 0.06, ALE 0.04, PME 0.08, PLE 0.05, AME–AME 0.04, AME–ALE 0.05, PME–PME 0.16, PME–PLE 0.03, MOQL 0.10, MOQA 0.15, MOQP 0.30. Leg formula: IV, II, I, III; leg measurements: I 1.70 (0.50, 0.29, 0.41, 0.31, 0.18), II 1.92 (0.56, 0.28, 0.54, 0.34, 0.20), III 1.51 (0.48, 0.25, 0.29, 0.34, 0.17), IV 2.11 (0.65, 0.26, 0.52, 0.47, 0.21). Epigyne ( Figs 16 A–D): Epigynal plate longer than wide, posterior margin heavily sclerotized; concaved posterior medially; spermathecae and copulatory ducts are prominently through epigynal plate in ventral view; two copulatory openings distinctive and large, located at posterior portion of epigynal plate; hyaline copulatory ducts thick and straight, close together, extending to anterior level of spermathecae, then retracing poteriorly to midlength of epigyne, connected laterally to bursae; spermathecae subglobular, situated anteriorly; bursae globular, much smaller than spermathecae; fertilization ducts acicular, membranous, located on lateral surface of spermathecae.

Distribution. Presently known only from the type locality.

Figures

FIGURE 15. Clubiona subquebecana sp. nov., male holotype: A–B, left palp (A prolateral view; B retrolateral view); C–E, flipped right palpal bulb (C prolateral view; D ventral view; E retrolateral view). Abbreviatures: C, conductor; E, embolus; EB, embolic base; RTA, retrolateral tibial apophysis; TH, tegular hump. Scale bars: 0.10 mm (A–B, C–E in the same scale).

FIGURE 16. Clubiona subquebecana sp. nov., male holotype (E–F) and female paratype (A–D, G–H): A–B, epigyne, ventral view (A uncleared; B cleared); C–D, vulva, dorsal view (C cleared; D cleared and embedded in Arabic gum); E–H, habitus (E, G dorsal view; F lateral view; H ventral view). Abbreviatures: BS, bursa; CD, copulatory duct; CO, copulatory opening; FD, fertilization duct; SP, spermatheca. Scale bars: 0.10 mm (A–D in the same scale); 1 mm (E–F, G–H in the same scale).