Crassignatha ertou 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 ertou

description: <i>Crassignatha ertou</i> Miller, Griswold &amp; Yin, sp. n. urn:lsid:zoobank.org:act: E0051348-2351-4E8D-8B2C-71871C4799B6 Figs 86 D-F, 88, 89 A-B, 100 <b>Material Examined.</b> Holotype: CHINA: Yunnan: Longling Co., Mangkuan Township, Zaotang He at Baihualing village, 25.30450°N, 98.80059°E, 1635 m, 2 June 2005, good subtropical broadleaf forest, dusting webs in understory, C. Griswold, CGY135 (CASENT 9029324, HNU), 1 ♁. Paratypes: [same data as holotype] (CASENT 9022397, HNU), 1 &amp;female;; [same data as holotype] (CASENT 9022398, CAS), 1 ♁, 2 &amp;female;; (CASENT 9029350, CAS), 1 &amp;female;; [same data as holotype] (CASENT 9029344, PV 1033-1041, CAS), 1 &amp;female;. <b>Etymology.</b> Formed from the Chinese words for two (èr) and bump (literally head, tóu), referring to the two bumps on the abdomen of this species. <b>Diagnosis.</b> Male and female distinguished from other <i>Crassignatha</i> species by the presence of two lobes on the posterodorsal part of the abdomen. See also diagnosis of <i>P. yinzhi</i> (Fig. 86 D-F). <b>Description.</b> Carapace brown. Sternum brown with rugose texture. Legs orange with dark rings distally on tibiae and metatarsi. Abdomen subspherical, dark gray, with numerous small sclerotized patches, some baring long setae, both sexes with pair of conspicuous bumps on the posterodorsal part of the abdomen; male with single orange scutum laterally and posteriorly, female without sclerite around spinnerets (Fig. 86 D-F). Male palp: Median apophysis with one tapered process. Embolus a long, rigid, tapered helix making a three turns (Fig. 88A). Vulva: Scape projects ventrally (Fig. 86D). Spermathecae separated by two thirds their diameter. Ducts arise from mesal part of spermathecae, follow complex path before opening near scape apex (Fig. 89B). Male (CASENT 9022398): Total length 0.88, carapace 0.39 long, 0.35 wide, clypeus 0.13, sternum 0.25 long, 0.24 wide, coxa IV separated by 1.85 times their width. Leg I: patella d1, tibia d2, metatarsus unmodified; Leg II: patella d1, tibia d2, v3, metatarsus excavated proximoventrally; Leg III: patella d1, tibia d1; Leg IV: patella d1, tibia d1. Metatarsal trichobothria: TmI: 0.45; TmII: 0.41; TmIII: absent. Leg measurements: see Appendix A. Female (CASENT 9022398): Total length 0.97, carapace 0.42 long, 0.35 wide, clypeus 0.12, sternum 0.28 long, 0.24 wide, coxa IV separated by 1.92 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: 0.42; 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 74-75, DOI: 10.3897/zookeys.11.160, http://zenodo.org/record/576459