Prosoponoides youyiensis Liu & Chen, 2020

Chen, Qianjun, Zhong, Yang, Liu, Jie & Chen, Jian, 2020, The spider genus Prosoponoides (Araneae: Linyphiidae) in China, Zootaxa 4786 (1), pp. 23-36 : 31

publication ID

https://doi.org/10.11646/zootaxa.4786.1.2

publication LSID

lsid:zoobank.org:pub:AAA51F72-9AD4-47B5-B845-C12DB8A426E6

DOI

https://doi.org/10.5281/zenodo.3866602

persistent identifier

https://treatment.plazi.org/id/CE60FA7E-411E-FF8F-FF29-FD954653F892

treatment provided by

Plazi

scientific name

Prosoponoides youyiensis Liu & Chen
status

n. sp.

Prosoponoides youyiensis Liu & Chen n. sp.

Figs 6–9 View FIGURE 6 View FIGURE 7 View FIGURE 8 View FIGURE 9

Type Materials. Male holotype, China, Tibetan Autonomous Region : Rikaze City , Nielamu County, Zhangmu Town , near Youyi bridge between China and Nepal, 27.97°N, 85.97°E, 30 August 2002, Fengxiang Liu leg. ( CBEE) GoogleMaps ; Paratypes, 5 females, same data as holotype GoogleMaps .

Etymology: The species name is taken from the name of the type locality, Youyi bridge between China and Nepal; adjective.

Diagnosis: The male of this species can be distinguished from other Prosoponoides species by the embolic base with a round apophysis nearby ( Fig. 7D View FIGURE 7 ) and the rectangular median part of tegulum ( Figs 6C View FIGURE 6 , 7B View FIGURE 7 ). The female of P. youyiensis n. sp. is similar to P. sinense in having semi-elliptical atrium with reduced septum, tube-shaped spermathecae located medially and closed with each other, but can it be distinguished by having the parmula almost as wide as long (strongly wider than long in P. sinense ) and by having spiraling copulatory ducts with about one and half coils (while P. sinense has two and half coils) ( Figs 5 View FIGURE 5 C–E, 6D, 6F–G, 8C–D).

Description. Male (holotype): Total length: 2.85. Carapace: 1.23 long, 1 wide. Abdomen: 1.5 long, 0.99 wide. Carapace red-brown, unmodified. AME smallest, other eyes subequal. AER recurved, AME-AME shorter than AMEd, AME-ALE about AMEd; PER straight, PME-PME about PMEd, PME-PLE slightly longer than PMEd; ALE and PLE juxtaposed. Chelicerae yellow-brown, stridulatory ridges weak, promargin of fang furrow with two teeth, first one much bigger than second, retromargin with one small tooth. Lengths of legs: I 5.41 (1.49+1.67+1.46+0.79), II 4.83 (1.36+1.47+1.28+0.72), III 2.71 (0.8+0.76+0.69+0.46), IV 3.97 (1.10+1.14+1.08+0.65). Abdomen cylindriform, without tubercle, gray with whitish and black spots laterally and dorsally ( Fig. 8B View FIGURE 8 ).

Male palp ( Figs 6 View FIGURE 6 A–C, 6E, 7): Patella short, with long spine dorsally. Tibia shorter than cymbium, with several long spines on lateral and ventral surfaces. Paracymbium tiny, curved upwardly. Suprategular slightly long, lender, not curved distally. Lamella well-developed, with four projections: lateral one broad, sheet-shaped, with a sharp end curved upwardly, and posterior one short and broad; anterior one small; dorsal one stout. Second membrane small, slightly cuticularized distally. Embolus filiform, with a round apophysis near the base in retrolateral view.

Female (paratype): Total length: 3.2. Carapace: 1.09 long, 0.97 wide.Abdomen: 1.96 long, 1.48 wide. Carapace yellow-brown, unmodified. AME smallest, other eyes subequal. AER recurved, AME-AME shorter than AMEd, AME-ALE about AMEd; PER straight, PME-PME about PMEd, PME-PLE slightly longer than PMEd; ALE and PLE juxtaposed. Chelicerae yellow-brown, stridulatory ridges weak, promargin of fang furrow with three teeth, first two much bigger than third, retromargin with two equal teeth. Lengths of legs: I 5.64 (1.59+1.73+1.47+0.85), II 4.89 (1.35+1.54+1.27+0.73), III 3.04 (0.88+0.91+0.75+0.5), IV 4.58 (1.32+1.33+1.26+0.67). Other somatic characters same as male ( Fig. 8A View FIGURE 8 ).

Epigynum ( Figs 6D View FIGURE 6 , 8C View FIGURE 8 ): Atrium oval, divided into two openings by septum. Parmula half elliptical, arising from dorsal wall but without connecting with septum, with a small depression at its tip. Vulva ( Figs 6 View FIGURE 6 F–G, 8D): Vulva longer than wide; copulatory ducts started from the two atrium openings, with about one and half coils; fertilization duct without coils, directly running downwards from the spermatheca inside the spiral tracing of copulatory duct; spermathecae short, located medially, closed with each other.

Distribution: China (Tibet) ( Fig. 9 View FIGURE 9 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Linyphiidae

Genus

Prosoponoides