Mosu nujiang Miller, Griswold & Yin, 2009

Miller, Jeremy, Griswold, Charles & Yin, Chang, 2009, The symphytognathoid spiders of the Gaoligongshan, Yunnan, China (Araneae: Araneoidea): Systematics and diversity of micro-orbweavers, ZooKeys 11 (11), pp. 9-195 : 52-53

Mosu nujiang Miller, Griswold & Yin , sp. n.

urn:lsid:zoobank.org:act:354C0C81-05C6-4394-A50B-2751253C09B6

Figs 43 F-G, 100

Material Examined. Holotype: CHINA: Yunnan: Fugong Co., Pee He , 40 km S Shangpa, SW of R., 26.54323°N, 98.89837°E, 1153 m, 23 August 2005, sifting bamboo litter at cliff base, P. Paquin, PP-4905 (CASENT 9020484, HNU), 1 ♀.

Paratype: [same data as holotype] (CASENT 9020485, CAS), 1 ♀ ; [same data as holotype] (CASENT 9020483, HNU), 1 ♀ , 2 juvs; Fugong Co., Lishadi , 5 km N Shangpa (Fungong), SW of river, 26.96025°N, 98.86606°E, 1247 m, 26 August 2005, sifting deciduous litter at base of rock cliffs, P. Paquin, PP-5305 (CASENT 9022532, CAS), 1 ♀ , 1 juv; Fugong Co., 4.5 km N Aludi Village, 22.1 km N Fugong , at stream entering NuJiang, 26.10829°N, 98.87162°E, 1263 m, 22 April 2004, C. Griswold, CGY05 (CASENT 9020715, CAS), 1 ♀ .

Etymology. Named for the Nujiang or Nu River, also known as the Saalween. This species was never found far from this major river. The epithet is a noun in apposition.

Diagnosis. Distinguished from M. huogou by the shape of the spermathecae, bulbous in M. nujiang ( Fig. 43G ), transversely ovoid in M. huogou ( Fig. 43I ), by the contact between the membranous copulatory ducts in the posteromedial region ( Fig. 43G ; separated in M. huogou , Fig. 43I ), and by the presence of a posterior abdominal tubercle in M. nujiang , absent in M. huogou .

Description. Carapace tan with dusky markings. Sternum tan with three dark arks, two anterolaterally, one posteriorly. Legs tan, darker distally on tibiae, metatarsi, and tarsi. Abdomen medium gray with tan and white spots, with chevron pattern between posterior tubercle and spinnerets.

Vulva: Spermathecae bulbous, copulatory duct adjacent to spermathecae as sclerotized as spermathecae. Fertilization ducts run anteromesally. Membranous copulatory ducts in posteriomedian region touching ( Fig. 43G ).

Female (CASENT 9022532): Total length 0.95, carapace 0.37 long, 0.36 wide, clypeus 0.08, sternum 0.24 long, 0.25 wide, coxa IV separated by 2.17 times their width. Macrosetae: Leg I: patella d1, tibia d1; Leg II: patella d1, tibia d1; Leg III: patella d1, tibia d1; Leg IV: patella d1, tibia d1. Metatarsal trichobothria: TmI: 0.31; TmII: 0.29; TmIII: 0.36. Leg measurements: see Appendix A.

Male unknown.

Figures

Figure 43. A-C, Gaoligonga changya sp. n. from QiQi He; D, E, Gaoligonga zhusun sp. n. from Shilajia village; F-G, Mosu nujiang sp. n. from Pee He; H, I, Mosu huogou sp. n. from Haban Falls. A, D, F, H, epigynum, ventral view; B, E, G, I, cleared vulva, dorsal view; C, eggs.CD: copulatory duct; FD: fertilization duct; S, spermatheca.

Figure 100. Distribution map, inset map shows study area. Purple: Mosu nujiang sp. n.; blue: Crassignatha ertou sp. n.; red: Chanea suukyii sp. n.; yellow: Patu jidanweishi sp. n