The crab spiders of the genus Lysiteles from Yunnan Province, China (Araneae: Thomisidae)

Abstract

This paper describes or redescribes 25 species of crab spiders of the genus Lysiteles (Araneae: Thomisidae) from Yunnan Province, China, including: 12 new species (L. arcuatus sp. nov., L. auriculatus sp. nov., L. clavellatus sp. nov., L. conflatus sp. nov., L. corrugus sp. nov., L. curvatus sp. nov., L. distortus sp. nov., L. guoi sp. nov., L. spirellus sp. nov., L. subdianicus sp. nov., L. transversus sp. nov.and L. uniprocessus sp. nov.); 3 new records for China (L. himalayensis Ono, 1979; L. niger Ono, 1979 and L. punctiger Ono, 2001); and 10 species previously known from China (L. ambrosii Ono, 2001, L. bhutanus Ono, 2001, L. conicus Tang, Yin, Peng, Ubick & Griswold, 2007, L. davidi Tang, Yin, Peng,Ubick & Griswold, 2007, L. dentatus Tang, Yin, Peng, Ubick & Griswold, 2007, L. dianicus Song & Zhao, 1994, L. kunmingensis Song & Zhao, 1994, L. maius Ono, 1979, L. saltus Ono, 1979, and L. torsivus Zhang, Zhu & Tso, 2006). The males of L. punctiger and L. dianicus are described here for the first time. Of these 25 Lysiteles species, 24 were collected from the Gaoligong Mountains, Yunnan Province. Detailed morphological characters, distribution map, photos and illustrations of the habitus and genital organs are given to each species except for the five ones reported in the paper by Tang et al. (2007) (L. ambrosii, L. bhutanus, L. conicus, L. davidi and L. dentatus). All species are described in alphabetic order. The key to species of the genus Lysiteles from Yunnan Province is presented.

Description of a new species of Lysiteles Simon from Guizhou Province,China (Araneae: Thomisidae)

“…Male distinguished from all other Lysiteles spp., except L. inflatus Song & Chai, 1990, by the presence of an apically drill-shaped embolus, but differs from L. inflatus by: (1) RTA with a bifurcated and pointed tip (Figures 4 and 12), but with a blunt tip in L. inflatus; (2) VTA digitiform, instead of boot-shaped in L. inflatus (Figures 5 and 11). The female is closely related to L. subdianicus Tang et al, 2008 in having a similar habitus, but differs by: (1) not 1 but a pair of atria (Figures 7, 8 dorsal, 2 pairs of ventral, 3 prolateral, 3 retrolateral spines; Tibiae III-IV with 1 dorsal, 1 ventral spine, 2 prolateral, 2 retrolateral spines; metatarsi I-II with 2 pairs of ventral, 3 prolateral, 3 retrolateral spines; metatarsi III-IV with 1 pair of ventral spines, 2 prolateral, 2 retrolateral spines. Opisthosoma oval, with a few short setae; dorsally light brown, with black markings; anteriorly with a pair of brown longitudinal stripes; medially with 2 pairs of small white spots; posteriorly with 3 pairs of large blackish brown stripes; laterally with a black stripe; venter yellow, with a U-shaped black marking.…”

“…The genus Lysiteles was established by Simon (1895) for the type species L. catulus Simon, 1895, which was based on a single female specimen from India. It contains small Thomisidae with body lengths of 2.0-4.5 mm, which mainly live in southern and eastern Asia (Ono, 1988) and inhabit grasses, shrubs, tree foliage, and leaf litter (Tang et al, 2007). Due to their high mobility and small size, it is hard to find this genus in the field, and the collection of paired specimens is even more difficult.…”

“…Due to their high mobility and small size, it is hard to find this genus in the field, and the collection of paired specimens is even more difficult. Therefore, almost 50% of the known species have been described from few specimens of a single sex (Tang et al, 2008).…”

Spiders from Vietnam (Arachnida: Aranei): new species and records

“…Unknown sexes are described for two species: Laufeia squamata (Żabka, 1985) (#), Ptocasius weyersi Simon, 1885 ($) (Salticidae). The following 16 species are reported for the spider fauna of Vietnam for the first time: Theridiidae: Phycosoma sinica (Zhu, 1992), Steatoda cingulata (Thorell, 1890); Tetragnathidae: Leucauge tessellata (Thorell, 1887), Orsinome vethi (Hasselt, 1842), Tetragnatha geniculata Karsch, 1892; Araneidae: Argiope jinghongensis Yin, Peng et Wang, 1994, Macracantha arcuata (Fabricius, 1793; Sparassidae: Pseudopoda namkhan Jäger, Pathoumthong et Vedel, 2006; Thomisidae: Lysiteles conicus Tang, Yin, Peng, Ubick et Griswold, 2007, L. dentatus Tang, Yin, Peng, Ubick et Griswold, 2007, L. punctiger Ono, 2001, L. torsivus Zhang, Zhu et Tso, 2006, Xysticus croceus Fox, 1937; Salticidae: Portia fimbriata (Doleschall, 1859), P. labiata (Thorell, 1887), Ptocasius weyersi Simon, 1885. РЕЗЮМЕ. В статье рассмотрен 51 вид пауков, собранных во Вьетнаме, из которых семь описаны, как новые для науки: Argiope abramovi sp.n.…”

“…Lysiteles torsivus Zhang, Zhu et Tso, 2006 COMMENTS. To date, the species has been known from China (Yunnan) and Taiwan [Tang et al, 2008;WSC, 2015]; first record for Vietnam (Map: 21). ETYMOLOGY.…”