Crassignatha yamu Miller, Griswold &amp; Yin 2009, sp. n.
Creators: name: Miller, Jeremy
name: Griswold, Charles
name: Yin, Chang
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Symphytognathidae
Crassignatha
Crassignatha yamu

description: <i>Crassignatha yamu</i> Miller, Griswold &amp; Yin, sp. n. urn:lsid:zoobank.org:act: D4A81694-3689-4399-8D50-0A41AB03066D Figs 76 H-I, 86 A-C, 87, 94 <b>Material Examined.</b> Holotype: CHINA: Yunnan: 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 9029321, HNU), 1♁. Paratypes: [same data as holotype] (CASENT 9020751, CAS), 1&amp;female;; [same data as holotype] (CASENT 9020752, HNU), 1 &amp;female;, 1 juv; 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 9029348, CAS), 1 &amp;female;; 10 rd km W NuJiang on Shibali Rd., N fork, Yamu He, Gaoligongshan, 27.13795°N, 98.82240°E, 1850 m, 25 April 2004, moist earthen embankments, C. Griswold, CGY11 (CASENT 9029291, with prey, CAS), 1 &amp;female;; [same data] (CASENT 9020735, CAS), 2 &amp;female;; [same data] (CASENT 9020736, HNU), 2 &amp;female;. <b>Etymology.</b> Named for the type locality. <b>Diagnosis.</b> Male distinguished by the long, flexible embolus describing a half circle turn (Fig. 87A). Female distinguished by the duct path, which follows a complex path from the spermathecae to near the posterior margin of the epigynum, then runs anteriorly between the spermathecae before turning toward the origin near the scape apex (Fig. 76I). Among other <i>Crassignatha</i> species, only <i>C. gudu</i> shares with <i>C. yamu</i> a duct that runs from the posterior margin of the epigynum anteriorly to the region between the spermathecae before turning, meeting, and running in parallel to the copulatory opening; <i>C. yamu</i> distinguished from <i>C. gudu</i> by the region where the the ducts meet before running to the copulatory openings; in <i>C. yamu</i>, the ducts run straight and come together at a nearly 90° angle near the midpoint of the spermathecae (Fig. 76I) while in <i>C. gudu</i>, the ducts curve and come together near the posterior margin of the spermathecae (Fig. 89D). <b>Description.</b> Carapace orange with small tubercles and sulci, less pronounced in female. Sternum dark brown. Legs orange, darker distally on tibiae and metatarsi, femora I and II slightly swollen basally in female. Abdomen subspherical, light to dark gray, with numerous small sclerotized patches, some baring long setae, male with single orange scutum laterally and posteriorly, female without sclerite around spinnerets (Fig. 86 A-C). Male palp: Median apophysis with one tapered process. Embolus long, flexible, tapered, makes a half turn, tip curved more strongly (Fig. 87A). Vulva: Scape projects ventrally (Fig. 86A). Spermathecae separated by their diameter. Ducts arise from posteromesal part of spermathecae, follow complex path, meet between spermathecae before running to opening near scape apex (Fig. 76I). Male (CASENT 9029321): Total length 0.75, carapace 0.35 long, 0.35 wide, clypeus 0.14, sternum 0.24 long, 0.24 wide, coxa IV separated by 2.08 times their width. Leg I: patella d1, tibia d2, metatarsus unmodified; Leg II: patella d1, tibia d2, v2, metatarsus excavated proximoventrally; Leg III: patella d1, tibia d1; Leg IV: patella d1, tibia d1. Metatarsal trichobothria: TmI: 0.46; TmII: 0.40; TmIII: absent. Leg measurements: see Appendix A. Female (CASENT 9020752): Total length 0.94, carapace 0.42 long, 0.36 wide, clypeus 0.09, sternum 0.26 long, 0.24 wide, coxa IV separated by 2.00 times their width. Leg I: patella d1, tibia d2, p1; Leg II: patella d1, tibia d2; Leg III: patella d1, tibia d1; Leg IV: patella d1, tibia d1. Metatarsal trichobothria: TmI: 0.43; TmII: 0.45; TmIII: absent. Leg measurements: see Appendix A.
description: Published as part of <i>Miller, Jeremy, Griswold, Charles &amp; Yin, Chang, 2009, The symphytognathoid spiders of the Gaoligongshan, Yunnan, China (Araneae: Araneoidea): Systematics and diversity of micro-orbweavers, pp. 9-195 in ZooKeys 11 (11)</i> on pages 73-74, DOI: 10.3897/zookeys.11.160, http://zenodo.org/record/576459