Miagrammopes bifurcatus Dong, Yan, Zhu &amp; Song 2004
Creators: name: Liang, Yun
name: Cai, Qu
name: Liu, Jinxin
name: Yin, Haiqiang
name: Xu, Xiang
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Uloboridae
Miagrammopes
Miagrammopes bifurcatus

description: <i>Miagrammopes bifurcatus</i> Dong, Yan, Zhu &amp; Song, 2004 Figures 7–12 <i>Miagrammopes bifurcatus</i> Dong <i>et al</i>. 2004: 66, fig. 2A–C (specimen not examined). <b>Material examined.</b> 3&amp;male; 1&amp;female; (Ulob-0003–0006- HNU) CHINA, Guangxi Zhuang Autonomous Region, Chongzuo City, Jiangzhou District, Zuozhou Town, Guanghe Village, Nongheng, 22°34.74'N, 107°24.92'E, 271 m, 29 VIII, 2015, Bing Zhou, Wang Liu, Qu Cai and Jihe Liu leg. <b>Diagnosis.</b> The male of this species resembles that of <i>M. scoparius</i> Simon, 1892 in having the similar tibial extend and terminal apophysis (Figs 8B, 9B; Chickering, 1968: fig. 36), but can be distinguished by relative narrow and long cymbium with a small hook-shaped apophysis (Figs 8B, 9B), while cymbium relative wide and short and without a hook-shaped apophysis in <i>M. scoparius</i> (Chickering, 1968: fig. 36). The female of this is similar to that of <i>M. auriculatus</i> <b>n. sp.</b> in having similar spermathecae including prolateral bursae, retrolateral bursae and connecting tubes between them both, but can be distinguished by the presence of conspicuous copulatory openings, and longitudinal and almost straight copulatory ducts (Figs 11, 12), while copulatory openings inconspicuous and copulatory ducts strongly curved to form a half loop in <i>M. auriculatus</i> <b>n. sp.</b> (Figs 5, 6). <b>Description. Male</b> (Ulob-0006-HNU). Total length 4.16, carapace 1.28 long, 0.96 wide, abdomen 2.88 long, 0.55 wide. Carapace (Fig. 7A, D) deep brown, approximately oblong, with yellowish longitudinal stripes medially. Anterior eye row absent and posterior eye row straight or slightly recurved. Eye diameters: PME 0.10; PLE 0.10. PME-PME 0.38; PME-PLE 0.26. Chelicerae (Fig. 7D) yellowish, without teeth, and with tubercular apophyses and bristles along margins of fang groove. Endite (Fig. 7E) pale yellowish, drop-shaped. Labium (Fig. 7E) yellowish, lanceolate apically, fused with sternum in the base. Sternum (Fig. 7E) yellow brown, divided into two unequal parts, with a black longitudinal stripe medially. Leg measurements: I 5.08 (1.80, 0.51, 0.38, 1.84, 0.55); II 2.64 (1.05, 0.26, 0.47, 0.51, 0.35); III 1.63 (0.39, 0.21, 0.46, 0.37, 0.20); IV 3.40 (1.17, 0.33, 1.11, 0.53, 0.26). Leg formula 1423. Leg I (Fig. 7F) brown, extremely long and strong, with several longitudinal stripes on dorsal sides. Legs –II (Fig. 7A–C) thin and gray, with some brown patches. Tibia of Leg II bearing a few macrosetae dorsally.Abdomen brown, long, with four pairs of grayish spots dorsally. <i>Palp</i> (Figs 8, 9). Tibia with terminal extremely developed and extended (tibial extend, TE), equal to cymbium in length, with several some setae dorsally. Cymbium relative narrow and long, with some hairs distally. Tegulum membranous. Sperm duct conspicuous. Embolus transparent, wrapped by radix except distal end. Radix sclerotized, broad at the base and narrow at the distal end. Terminal apophysis divided into two parts, primary terminal apophysis (namely terminal apophysis 1 in Logunov 2018) and secondary terminal apophysis (namely terminal apophysis 2 in Logunov 2018). Terminal apophysis 1 horizontally extended, long and slender, but terminal apophysis 2 longitudinally extended, short and strong. <b>Female</b> (Ulob-0003-HNU). Total length 5.54, carapace 1.61 long, 1.38 wide, abdomen 3.93 long, 0.99 wide. Eye diameters: PME 0.11; PLE 0.14. PME-PME 0.72; PME-PLE 0.12. Leg I: 10.04 (3.40, 0.82, 2.48, 2.77, 0.57); leg II: 4.46 (1.53, 0.52, 0.90, 1.11, 0.40); leg III: 2.6 (0.68, 0.33, 0.53, 0.67, 0.39); leg IV: 6.02 (1.83, 0.55, 1.80, 1.37, 0.47). Leg formula 1423. General characters as in male, but slightly larger in size and lighter in color. <i>Epigynum</i> (Figs 11, 12). Two copulatory openings conspicuous, situated near the posterior margin of epigynum. Retrolateral bursa (RB) pear-shaped, almost circled by connecting tube. Prolateral bursa (PB) roughly globular, almost as large as RB. Connecting tube (CT) long, strongly bent at the position connecting RB. Copulatory ducts longitudinal, almost parallel to each other, much shorter than CT. Fertilization ducts small, membranous, and with the distal ends slightly far from each other. <b>Distribution.</b> China (Hainan, Guangxi) (Fig. 13).
description: Published as part of <i>Liang, Yun, Cai, Qu, Liu, Jinxin, Yin, Haiqiang &amp; Xu, Xiang, 2021, Three species of hackled-orb web spider genus Miagrammopes from China (Araneae, Uloboridae), pp. 564-576 in Zootaxa 5004 (4)</i> on pages 570-574, DOI: 10.11646/zootaxa.5004.4.5, http://zenodo.org/record/5140829
description: {"references": ["Dong, S. J., Yan, P., Zhu, M. S. &amp; Song, D. X. (2004) Three new species of the genus Miagrammopes from China (Araneae: Uloboridae). Acta Arachnologica Sinica 13, 65 - 70.", "Chickering, A. M. (1968) The genus Miagrammopes (Araneae, Uloboridae) in Panama and the West Indies. Breviora, 289, 1 - 28.", "Logunov, D. V. (2018) Three new spider species of the genus Miagrammopes O. Pickard-Cambridge, 1870 (Aranei, Uloboridae) from Southeast Asia. Euroasian Entomological Journal, 17 (4), 280 - 289. https: // doi. org / 10.15298 / euroasentj. 17.4.07"]}