Mysmena goudao 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 : 39-40

Mysmena goudao Miller, Griswold & Yin , sp. n.

urn:lsid:zoobank.org:act:21B7C117-C770-4C8E-B8B9-B1803E0B0FED

Figs 21 F-H, 27 A-E, 28-29 , 97

Material Examined. Holotype: CHINA: Yunnan: Gaoligong Shan, Nujiang Prefecture: Nujiang State Nature Reserve , QiQi He , 9.9 airkm W of Gongshan, 27.715°N, 98.565°E, 2000 m, 9-14 July 2000, H.-M. Yan, D. Kavanaugh, C.E. Griswold, H.-B. Liang, D. Ubick, & D.-Z. Dong (CASENT 9029304, HNU), 1 ♁.

Paratypes: [same data as holotype] (CASENT 9016245, CAS), 5 ♁, 12 ♀ ; [same data as holotype] (CASENT 9029305, HNU), 1 ♁, 15 ♀, 6 juvs ; Fugong Co., Lishadi , 500 m W of Shibali, 27.16650°N, 98.77936°E, 2537 m, 18 August 2005, sifting deciduous forest litter, P. Paquin, PP-4405 (CASENT 9022510, CAS), 1 ♁, 1 juv ; Gaoligongshan , Shibali forest station, 27.16636°N, 98.77667°E, 2563 m, 3-11 May 2004, good forest, pitfall traps, C. Griswold, D. Kavanaugh, CGY21 (CASENT 9020447, HNU), 1 ♁, 2 ♀; (CASENT 9020446, CAS) , 1 ♁, 1 ♀, 1 juv; Gaoligongshan , 0.5 km radius of Shibali forest station, 27.16519°N, 98.77891°E, 2525 m, 1-9 May 2004, dusting webs in forest, C. Griswold, CGY25 (CASENT 9029297, CAS), 1 ♁; Gaoligongshan , 0.4 km SSE Shibali forest station, 27.16337°N, 98.78208°E, 2475 m, 5 May 2004, dusting webs in understory of good forest, C. Griswold, CGY29 (CASENT 9019872, HNU), 1 ♁, 2 ♀ .

Etymology. Formed from the Chinese word for groove (gōu dào), referring to the wide tuberculate groove on the male cymbium.

Diagnosis. Male distinguished by the cymbial groove studded with tubercles ( Fig. 29A ). Female distinguished from most Chinese Mysmena by the lack of scape or other external structures to the epigynum ( Fig. 29F ); distinguished from M. haban and M. shibali by the presence of a spermatheca/copulatory duct complex (Fig. 21G; spermathecae simple and round to oval, distinct from lightly sclerotized copulatory ducts in M. haban and M. shibali ; Figs 21I, 31B).

Description. Carapace orange, sulci absent. Sternum dusky orange. Legs orange. Femoral spots on legs I and II. Abdomen gray with four white spots on posterior; posterior tubercle absent ( Fig. 27 A-E).

Male palp: Embolus spiral, follows tegular groove for most of length, engages with cymbium distally ( Fig. 28 , 29C ). Cymbium with wide groove studded with tubercles ( Figs 28A , 29A ). Cymbial base with lobes, no apophyses ( Fig. 29B ). Tip of cymbium divided into several thin terminal apophyses ( Fig. 28B ).

Vulva: Epigynum weakly sclerotized, without scape or any other obvious external structure ( Fig. 29F ); internal structures visible through cuticle (Fig. 21F). Copulatory ducts with multiple turns, atria clearly visible; region between atria with wrinkled texture (Fig. 21G). Sclerotized portion of spermatheca/copulatory duct complexes separated by more than their width.

Male (CASENT 9016245): Total length 0.71, carapace 0.40 long, 0.39 wide, clypeus 0.16, sternum 0.26 long, 0.26 wide, coxa IV separated by 1.50 times their width. Macrosetae: Leg I: patella d1, tibia d1, metatarsus p1; Leg II: patella d1, tibia d1, v3; Leg III: patella d1, tibia d1; Leg IV: patella d1, tibia d1. Metatarsal macrosetae gradually curved. Metatarsal trichobothria: TmI: 0.25; TmII: 0.36; TmIII: 0.35. Leg measurements: see Appendix A. Epiandrous gland spigots in two widely spaced clusters of two spigots each. Posterior lateral spinnerets with flagelliform and aggregate gland spigots reduced to nubbins ( Fig. 29E ).

Female (CASENT 9016245): Total length 0.98, carapace 0.46 long, 0.43 wide, clypeus 0.13, sternum 0.29 long, 0.29 wide, coxa IV separated by 1.80 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: 0.28; TmIII: 0.35. Leg measurements: see Appendix A.

Figures

Figure 21. A-C, Mysmena jinlong sp. n. from Danzhu He drainage; D, E, Mysmena bizi sp. n. from Chang Yan He; F-H, Mysmena goudao sp. n. from QiQi He; I, Mysmena haban sp. n. from Haban Falls. A, D, F, epigynum, ventral view; B, epigynum, lateral view; C, E, G, I, cleared vulva, dorsal view; H, eggs.

Figure 27. A-E, Mysmena goudao sp. n. from QiQi He; F-H, Mysmena shibali sp. n. from Shibali. A, male; B-H, female. A, B, F, lateral; C, G, dorsal; D, H, ventral; E, posterior.

Figure 28. Mysmena goudao sp. n. from QiQi He, male palp. A, prolateral; B, retrolateral. B: base of cymbium; CB: cymbium; E: embolus; G: cymbial groove; T: tegulum.

Figure 29. Mysmena goudao sp. n. from QiQi He, SEM. A-E, male; F, female. A, palp, prolateral; B, palp, retrolateral; C, palp, apical; D, metatarsus I; E, PLS, arrow indicates modified PLS seta; F, epigynum. AC: aciniform gland spigot; AGn: aggregate gland spigot nubbin; B: base of cymbium; CB: cymbium; E: embolus; FLn: flagelliform gland spigot nubbin; G: cymbial groove; T: tegulum.

Figure 97. Distribution map, inset map shows study area. Yellow: Mysmena goudao sp. n.; red: Mysmena haban sp. n.; purple: Simaoa yaojia sp. n.; white: Simaoa kavanaugh sp. n.