Crassignatha yinzhi 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 yinzhi

description: <i>Crassignatha yinzhi</i> Miller, Griswold &amp; Yin, sp. n. urn:lsid:zoobank.org:act: D97E4962-C41A-4EEA-971B-1FABB5F3490A Figs 72E, 76 C-D, 78 E, 79 C-D, 80-82, 98 <b>Material Examined.</b> Holotype: CHINA: Yunnan: Longling Co., Longjiang Township, Xiao Hei Shan Nature Reserve, 1.2 km SSE of Route S317 at km 23.5, 24.82888°N, 98.76001°E, 2020 m, 27-28 May 2005, good primary broadleaf forest, dusting webs in understory, C. Griswold, CGY128 (CASENT 9029322, HNU), 1 ♁. Paratypes: [same data as holotype] (CASENT 9029342, PV - 1st set, CAS), 2 &amp;female;; [same data as holotype] (CASENT 9022375, CAS), 2 ♁, 5 &amp;female;; [same data as holotype] (CASENT 9022376, HNU), 5 &amp;female;; Longling Co., Longjiang Township, Xiao Hei Shan Nature Reserve, 1.2 km SSE of Route S317 at km 23.5, 24.82888°N, 98.76001°E, 2020 m, 28 May 2005, good primary broadleaf forest, night collecting, C. Griswold, D. Kavanaugh, CGY129 (CASENT 9022354, HNU), 1 ♁, 1 &amp;female;; [same data] (CASENT 9022170, CAS), 2 &amp;female;; Longling Co., Longjiang Township, Xiao Hei Shan Nature Reserve, 1.2 km SSE of Route S317 at km 23.5, 24.82888°N, 98.76001°E, 2020 m, 26 May 2005, good primary broadleaf forest, night collecting, C. Griswold, D. Kavanaugh, CGY127 (CASENT 9022396, HNU), 1 &amp;female;. <b>Etymology.</b> Formed from the Chinese words for long (yǏn) and straight (zhí), referring to the shape of the terminal apophysis in the male palp. <b>Diagnosis.</b> Male distinguished from other <i>Crassignatha</i> species except <i>C. ertou</i> by the long, rigid embolus with a strong kink about 1/3 its length from the origin (Figs 81A, 82C); distinguished from <i>C. ertou</i> by the longer embolus with fewer helical turns and by the lack of a pair of bumps on abdomen. Female distinguished from other <i>Crassignatha</i> species except <i>C. quanqu</i> by the distal lobe of the scape, which is more narrow than and projects well beyond the basal lobe (Figs 76D, 79 C-D); other <i>Crassignatha</i> species either have the lobes not well differentiated or they are the same width (Fig. 79A); distinguished from <i>C. quanqu</i> by the orientation of the scape, projecting posteroventrally in <i>C. yinzhi</i> (Figs 79D, 80B), ventrally in <i>C. quanqu</i> (Figs 76F, 79F), and elements of somatic morphology including abdomen color and shape, and the more distinct division between the cephalic and thoracic regions in <i>C. yinzhi</i> (contrast Fig. 80B with Fig. 83B). <b>Description.</b> Carapace dark orange-brown with small tubercles and sulci. Sternum dark brown. Legs orange, femora I and II slightly swollen basally in female. Abdomen subtriangular, distinctly taller than long, dark gray, with numerous small sclerotized patches, some baring long setae, male with single orange scutum laterally and posteriorly, female with small sclerite around spinnerets (Fig. 80). Male palp: Median apophysis with two tapered processes arising distally and ventrally. Embolus long, rigid, and tapered, making a single turn (Figs 81A, 82C). Vulva: Scape projects posteroventrally (Fig. 80B), with narrow distal lobe on wider basal lobe (Figs 76D, 79C). Spermathecae separated by 3/4 their diameter. Ducts arise from mesal part of spermathecae, follow complex path mostly posterior to spermathecae before reaching openings near apex of scape (Fig. 76D). Male (CASENT 9022375): Total length 0.92, carapace 0.42 long, 0.40 wide, clypeus 0.14, sternum 0.29 long, 0.26 wide, coxa IV separated by 2.07 times their width. Leg I: patella d1, tibia d2, metatarsus unmodified; Leg II: patella d1, tibia d2, v4, metatarsus excavated proximoventrally; Leg III: patella d1, tibia d1; Leg IV: patella d1, tibia d1. Metatarsal trichobothria: TmI: 0.45; TmII: 0.42; TmIII: absent. Leg measurements: see Appendix A. Female (CASENT 9022375): Total length 1.27, carapace 0.32 long, 0.27 wide, clypeus 0.12, sternum 0.32 long, 0.29 wide, coxa IV separated by 2.00 times their width. Leg I: patella d1, tibia d2; Leg II: patella d1, tibia d2; Leg III: patella d1, tibia d1; Leg IV: patella d1, tibia d1. Metatarsal trichobothria: TmI: 0.40; TmII: 0.44; TmIII: absent. Leg measurements: see Appendix A. <b>Natural History.</b> This species builds a horizontal orb web (Fig. 72E).
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 71-72, DOI: 10.3897/zookeys.11.160, http://zenodo.org/record/576459