Trilacuna changzi Tong &amp; Li 2020, sp. nov.
Creators: name: Tong, Yanfeng
name: Li, Shuqiang
name: Bian, Dongju
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Oonopidae
Trilacuna
Trilacuna changzi

description: Trilacuna changzi Tong &amp; Li sp. nov.Figs 4, 5, 6, 14D-F, 15C, D, 16A, B Type material. <i>Holotype</i> &amp;male;: Myanmar, near 1.5 km from the roadside between Kanpetlet and Nat Ma Taung National Park; 21°13.058'N, 93°59.033'E; elevation ca 2420 m; 1.V.2017; Wu J. and Chen Z. leg. (IZCAS AR-25139). <i>Paratype</i> 1&amp;female;: Myanmar, same data as for holotype (IZCAS AR-25140). Diagnosis. The new species is similar to <i>T. mahanadi</i> Grismado &amp; Piacentini, 2014 but can be distinguished by the long, strongly curved spines on the male endites (Figs 4G, 16A, B), the bare dorsal branch (db) of the embolus system (Figs 5E, F, H, 14E), and the triangular plate (tp) of the female epigastric area (Fig. 6G). The male of <i>T. mahanadi</i> has unmodified endites and lacks the dorsal branch of the embolus system, and the triangular plate is lacking in the epigastric area of the female (Grismado et al. 2014: figs 36-38). Description. <b> Male. <i>Body</i></b> : yellow-brown, chelicerae and sternum lighter, legs yellow; habitus as in Figure 4A-C; body length 1.56. <i>Carapace</i>: 0.76 long, 0.64 wide; sides smooth, lateral margin rebordered (Fig. 4D); posterior surface with several large setal bases (Fig. 4H). <i>Eyes</i>: ALE largest; PLE and PME nearly equal in size; ALE-PLE separated by less than ALE radius; PME touching each other; posterior eye row recurved as viewed from above, procurved as viewed from front (Fig. 4D, I). <i>Clypeus</i>: height about 0.7 times of ALE diameter, with a triangular, pointed median projection (cmp). <i>Mouthparts</i> (Figs 4G-I, 16A, B): endites slender, with two long, strongly curved spines. <i>Sternum</i>: (Fig. 4F). <i>Abdomen</i>: 0.82 long, 0.66 wide; booklung covers ovoid, surface smooth (Fig. 4I); dorsal scutum not fused to epigastric scutum; apodemes present, posterior spiracles not connected by groove; epigastric region with a cluster of dense, short setae (Fig. 4C). <i>Palp</i> (Figs 5, 14D-F): orange; 0.48 long (0.15, 0.11, 0.09, 0.13); femur greatly elongated (width/length = 0.65) (Fig. 5A, B); bulb pear-shaped, tapering apically; embolus system (Fig. 5E, F, H) with a bare dorsal branch (db) in prolateral view, and a small median branch (mb) and laterally curved branch (lb) in dorsal view. <b>Female.</b> Same as male except as noted. <i>Habitus</i>: as in Figure 6A-C; slightly larger than male. <i>Body</i>: length 1.76. <i>Carapace</i>: 0.79 long, 0.67 wide. <i>Abdomen</i>: 1.12 long, 0.82 wide. <i>Endites</i>: unmodified. <i>Epigastric area</i> (Figs 6G, 15C): with a large, triangular plate (tp). <i>Endogyne</i> (Fig. 15D): with narrow, transverse sclerite (tsc), an anterior stick-shaped sclerite (as), and a posterior tortuous, tube-like globular structure (glo); transverse bars (tba) with two lateral apodemes (ap). Etymology. The specific name is derived from Chinese pinyin, “changzi”, which means "long moustache", referring to the long, curved spines on the male’s endites; noun in apposition. Distribution. Known only from the type locality.
description: Published as part of <i>Tong, Yanfeng, Li, Shuqiang &amp; Bian, Dongju, 2020, Taxonomic studies on the genus Trilacuna (Araneae, Oonopidae) from Myanmar, pp. 39-62 in ZooKeys 960</i> on page 39, DOI: 10.3897/zookeys.960.54053
description: {"references": ["Grismado, CJ, Deeleman-Reinhold, CL, Piacentini, LN, Izquierdo, MA, Ramirez, MJ, 2014. Taxonomic review of the goblin spiders of the genus Dysderoides Fage and their Himalayan relatives of the genera Trilacuna Tong and Li and Himalayana, new genus (Araneae, Oonopidae). Bulletin of the American Museum of Natural History 387: 1 - 108, DOI: https://doi.org/10.1206/843.1"]}