Gaoligonga zhusun 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 : 50-51

Gaoligonga zhusun Miller, Griswold & Yin , sp. n.

urn:lsid:zoobank.org:act:EE37EDDC-1418-49FB-8D98-BF0589A0FB5B

Figs 43 D-E, 44-47 , 98

Material Examined. Holotype: CHINA: Yunnan: Fugong Co., Shilajia village on N fork, Yamu He , Gaoligongshan , 27.13440°N, 98.82625°E, 1792 m, 24 April 2004, moist steep stream banks, C. Griswold, CGY09 (CASENT 9020722, HNU), 1 ♁.

Paratypes: [same data as holotype] (CASENT 9020723, CAS), 1 ♁, 4 ♀ ; [same data as holotype] (CASENT 9020718, CAS), 1 ♀ ; [same data as holotype] (CASENT 9020724, CAS), 1 ♁, 2 ♀ ; [same data as holotype] (CASENT 9020726, HNU), 2 ♀ ; [same data as holotype] (CASENT 9020727, HNU), 2 ♀, 3 juvs ; [same data as holotype] (CASENT 9020725, CAS), 2 ♀ ; [same data as holotype] (CASENT 9020728, CAS), 1 ♀, 2 juvs ; [same data as holotype] (CASENT 9029352, CAS), 5 ♀ ; Fugong Co., S Fork , Yamu He , 1.51 km 150° SW of confluence [with N Fork], Gaoligongshan, 27.11905°N, 98.83108°E, 1723 m, 26 April 2004, moist shaded embankments, C. Griswold, CGY13 (CASENT 9020755, CAS), 4 ♀ ; [same data] (CASENT 9020754, HNU), 1 ♁, 1 ♀ ; [same data] (CASENT 9020758, HNU), 4 ♀ ; [same data] (CASENT 9020757, CAS), 4 ♀ ; [same data] (CASENT 9020760, HNU), 2 ♀, 4 juvs ; [same data] (CASENT 9020756, HNU), 4 ♀ ; [same data] (CASENT 9020759, CAS), 2 ♀, 3 juvs ; [same data] (CASENT 9029354, CAS), 9 ♀, 1 juv ; Gaoligongshan , 10 rd km W NuJiang on Shibali Rd., N fork, Yamu He, 27.13795°N, 98.82240°E, 1850 m, 25 April 2004, moist earthen embankments, C. Griswold, CGY11 (CASENT 9020739, HNU), 1 ♀, 4 juvs ; [same data] (CASENT 9020738, HNU), 2 ♀ ; [same data] (CASENT 9029290, CAS), 2 ♀ .

Etymology. Formed from the Chinese words for bamboo shoot (zhú sǔn), referring to the macrosetae on the front of the male chelicerae in Gaoligonga zhusun that are much smaller than those in G. changya , the other species in this genus.

Diagnosis. Male distinguished by the much weaker pair of macrosetae near the base of each chelicerae ( Fig. 46D ) compared to G. changya ( Figs 38A , 40 E-F); further distinguished by the shape of the embolic tip (expanded in G. zhusun , Fig. 46B ; tapered in G. changya , Fig. 40C ) and by the lack of a cymbial tooth (present in G. changya , Fig. 40B ). Female distinguished by the nearly longigudinal spermatheca/copulatory duct complex ( Fig. 43E; G . changya has spermathecae distinct from sinuous copulatory ducts, Fig. 43B ); further distinguished by the well sclerotized ventral plate of the epigynum in G. changya ( Fig. 43A ), less strongly sclerotized in G. zhusun ( Fig. 43D ).

Description. Carapace yellow to brown, male head region moderately raised, sulci absent ( Fig. 46E ). Male chelicerae with four moderately strong setae rooted near the base ( Fig. 46D ). Sternum dark brown with light median stripe. Legs yellow with dark rings distally on tibiae and metatarsi. Femoral spots absent. Abdomen brown with numerous tan spots, with two large and up to six small dorsal white spots, and pair of unjoined longitudinal white lines laterally; posterior tubercle absent ( Fig. 44 ).

Male palp: Embolus spiral, tip widened and membranous, not wrapped by distal part of cymbium ( Figs 45B , 46B ). Tooth-like process on retrolateral part absent from cymbium.

Vulva: Epigynum with weakly sclerotized, raised, ridged central knob ( Figs 43D , 47D ). Spermathecae and copulatory ducts not clearly differentiated, form nearly longitudinal complex ( Fig. 43E ). Fertilization ducts emerge from posterior part, spiral mesally.

Male (CASENT 9020723): Total length 0.67, carapace 0.31 long, 0.31 wide, clypeus 0.15, sternum 0.22 long, 0.22 wide, coxa IV separated by 2.40 times their width. Macrosetae: Leg I: patella d1, tibia d1, metatarsus p1; Leg II: patella d1, tibia d1; Leg III: patella d1, tibia d1; Leg IV: patella d1, tibia d1. Metatarsal macrosetae nearly straight, only slightly kinked near center, metatarsus not excavated prolaterally ( Fig. 46F ). Metatarsal trichobothria: TmI: 0.22; TmII: 0.29; TmIII: 0.31. Leg measurements: see Appendix A. Epiandrous gland spigots in two widely spaced clusters of two to three spigots each ( Fig. 47E ).

Female (CASENT 9020723): Total length 0.93, carapace 0.38 long, 0.38 wide, clypeus 0.09, sternum 0.26 long, 0.25 wide, coxa IV separated by 2.00 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: 0.26; TmII: 0.31; TmIII: 0.34. Leg measurements: see Appendix A. Spinnerets ( Fig. 47 A-C).

Figures

Figure 38. Gaoligonga changya sp. n. A, male from Lishadi; B-E, female from QiQi He. A, B, lateral; C, dorsal; D, ventral; E, posterior.

Figure 40. Gaoligonga changya sp. n. from Lishadi, SEM of male. A, palp, prolateral; B, palp, retrolateral; C, palp, dorsal; D, metatarsus I; E, prosoma, lateral; F, prosoma, dorsal. B: base of cymbium; BK: basal keel; CB: cymbium; CT: cymbial tooth; DL: distal lobe; E: embolus; MK: median keel; T: tegulum.

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 44. Gaoligonga zhusun sp. n. from Shilajia village. A, male, lateral; B, female, lateral; C, female, dorsal; D, female, ventral; E, female, posterior.

Figure 45. Gaoligonga zhusun sp. n. from Shilajia village, male palp. A, prolateral; B, retrolateral. B: base of cymbium; CB: cymbium; E: embolus; T: tegulum.

Figure 46. Gaoligonga zhusun sp. n. from Shilajia village, SEM of male.A, palp, prolateral; B, palp, retrolateral; C, palp, dorsal; D, chelicerae, lateral, dorsal to the left; E, prosoma, lateral; F, metatarsus I. B: base of cymbium; BK: basal keel; CB: cymbium; DL: distal lobe; E: embolus; MK: median keel; T: tegulum.

Figure 47. Gaoligonga zhusun sp. n. from Shilajia village, SEM. A-D, F, female; E, male. A, spinnerets; B, ALS; C, PLS and PMS, arrow indicates modified PLS seta; D, epigynum; E, epiandrous gland spigots; F, metatarsus-tarsus joint, arrow indicates tarsal organ. AC: aciniform gland spigot; AG: aggregate gland spigot; ALS: anterior lateral spinneret; CY: cylindrical gland spigot; FL: flagelliform gland spigot; MAP: major ampullate gland spigot; mAP: minor ampullate gland spigot; PI: piriform gland spigot; PLS: posterior lateral spinneret; PMS: posterior median spinneret; t: tartipore.

Figure 98. Distribution map, inset map shows study area. White: Simaoa maku sp. n.; blue: Simaoa bianjing sp. n.; red: Gaoligonga changya sp. n.; yellow:Gaoligonga zhusun sp. n.; orange: Crassignatha pianma sp. n.; purple: Crassignatha yinzhi sp. n.