Ramosatidia situ Yu & Li, 2021

Zhang, Jianshuang, Yu, Hao & Li, Shuqiang, 2021, On the clubionid spiders (Araneae, Clubionidae) from Xishuangbanna, China, with descriptions of two new genera and seven new species, ZooKeys 1062, pp. 73-122 : 73

Ramosatidia situ Yu & Li sp. nov.

Figs 19 , 20

Type material.

Holotype: ♂ (IZCAS-Ar34734), China: Yunnan: Xishuangbanna: Mengla County: Xishuangbanna Nature Reserve: Xiaolongha biodiversity preservation corridor (21°24.159'N, 101°37.178'E, 630 m), 27 June 2012, Q. Zhao leg. Paratype: 1♀ (IZCAS-Ar34735), same data as holotype.

Other material examined.

1♀ (YHCLU0134), same data as holotype .

Etymology.

The specific name is derived from the Chinese pinyin sìtū, which means four apophyses, referring to four tibial apophyses; noun in apposition.

Diagnosis.

Same as for genus.

Description.

Male (holotype) (Fig. 20E-F ). Total length 3.80; carapace 1.74 long, 1.24 wide; opisthosoma 2.06 long, 0.77 wide. Carapace pyriform, ocular area distinctly narrowed, in profile almost flat. Carapace yellowish white anteriorly and centrally, dark green posteriorly and marginally, without distinct pattern; fovea greenish. Eyes: in dorsal view, AER slightly recurved, PER almost straight, PER wider than AER. AME dark, other eyes light; with black rings. Eye sizes and interdistances: AME 0.09, ALE 0.08, PME 0.09, PLE 0.07, AME-AME 0.02, AME-ALE 0.04, PME-PME 0.19, PME-PLE 0.04, MOQL 0.23, MOQA 0.20, MOQP 0.38. Chelicerae yellowish green, with one tooth on promargin and five on retromargin. Labium and endites yellowish green. Sternum yellowish. Legs uniformly yellowish green. Leg measurements: Legs I and II missing, III 4.46 (1.25, 1.58, 1.24, 0.40), IV 8.47 (2.66, 2.79, 2.44, 0.58). Abdomen (Fig. 20E, F ) lanceolate, surface wrinkled; dorsally uniformly yellowish green; laterally with longitudinal dark green lines; venter without distinct pattern, yellowish green centrally, bottle-green marginally; spinnerets pale green.

Palp (Fig. 19A-E ): Femur and patella unmodified. Tibia relatively long, ~ 2/3 cymbium length, with four apophyses, PTA digitiform, with blunt tip, ~ 1/2 tibia length; DTA small, coniform in prolateral view, thumb-like in retrolateral view, ~ 1/3 tibia length; LTA heavily sclerotised, semi-circular with pit, like an ear in retrolateral view, ~ 1/3 tibia length; RTA ~ as long as tibia, wide proximally, narrowed distally, rough tip. Cymbium ~ 1.9 × longer than wide, baso-prolaterally with a trapezoidal projection. Tegulum elongated, relatively flat, ~ 2 × longer than wide, sperm duct distinct, U-shaped. Embolus, small spicule with forked tip, shorter than 1/10 tegulum length, originating apico-retrolaterally on tegulum, tip extended to apex of cymbium. Conductor ~ 1/4 tegulum length, sheet-shaped, translucent, originating from apico-retrolateral area of tegulum, covering embolic base.

Female (paratype IZCAS-Ar34735). Total length 3.95; carapace 1.73 long, 1.29 wide; opisthosoma 2.22 long, 0.63 wide. Similar to males but longer and darker (Fig. 20G, H ). Chelicera with four promarginal teeth, retromarginal teeth lacking. Eye sizes and interdistances: AME 0.08, ALE 0.08, PME 0.07, PLE 0.07, AME-AME 0.03, AME-ALE 0.03, PME-PME 0.18, PME-PLE 0.03, MOQL 0.22, MOQA 0.19, MOQP 0.35. Legs green. Leg measurements: I 4.82 (1.44, 1.97, 0.89, 0.51), II - (1.93, 2.78, 1.35, -), III 4.06 (1.27, 1.44, 0.99, 0.36), IV missing.

Epigyne (Fig. 20A-D ): Plate disc-shaped, slightly longer than wide, posterior margin not rebordered; atrium absent; spermathecae and copulatory ducts barely visible through integument. Copulatory openings small, separated by ~ 2 diameters, situated near epigastric furrow. Copulatory ducts thick, separated by ~ 1.5 diameters, ascending obliquely to spermathecae. Hyaline spermathecae large, oval, ~ 1.5 × longer than wide, located anteriorly, separated by 0.5 widths. Bursae distinctly smaller than spermathecae, close together, ~ 1.29 × wider than long, bursal surface hyaline, wrinkled, ribbed, pigmented and sclerotised inside. Acicular fertilisation duct relatively long, ~ 1/2 of spermathecae length, located dorso-basally on spermathecae.

Distribution.

Known only from the type locality.

Figures

Figure 19. Male palp of the holotype of Ramosatidia situ sp. nov. A prolateral view B retrolateral view C bulb, prolateral view D bulb, ventral view E bulb, retrolateral view. Abbreviations: C = conductor; DTA = dorsal tibial apophysis; E = embolus; LTA = lateral tibial apophysis; PTA = prolateral tibial apophysis; RTA = retrolateral tibial apophysis. Scale bars: 0.10 mm (equal for A, B, equal for C-E).

Figure 20. Ramosatidia situ sp. nov., female paratype and male holotype, epigyne (A-D), male habitus (E, F) and female habitus (G, H) A intact, ventral view B cleared, ventral view C cleared, dorsal view D cleared, dorsal view E dorsal view F lateral view G dorsal view H ventral view. Abbreviations: BS = bursa; CD = copulatory duct; CO = copulatory opening; FD = fertilization duct; SP = spermatheca. Scale bars: 0.10 mm (equal for A-D); 1 mm (equal for E, F, equal for G, H).