Trilacuna changzi Tong & Li, 2020
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publication ID |
https://dx.doi.org/10.3897/zookeys.960.54053 |
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publication LSID |
lsid:zoobank.org:pub:2444E1F8-4002-40EA-BA3C-4B1D11778DF2 |
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DOI |
https://doi.org/10.5281/zenodo.7019544 |
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persistent identifier |
https://treatment.plazi.org/id/8557BE3E-8492-4401-B95E-C4C9D177DFA6 |
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taxon LSID |
lsid:zoobank.org:act:8557BE3E-8492-4401-B95E-C4C9D177DFA6 |
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treatment provided by |
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scientific name |
Trilacuna changzi Tong & Li |
| status |
sp. nov. |
Trilacuna changzi Tong & Li sp. nov. Figs 4 View Figure 4 , 5 View Figure 5 , 6 View Figure 6 , 14D-F View Figure 14 , 15C, D View Figure 15 , 16A, B View Figure 16
Type material.
Holotype ♂: 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). Paratype 1♀: Myanmar, same data as for holotype (IZCAS AR-25140).
Diagnosis.
The new species is similar to T. mahanadi Grismado & Piacentini, 2014 but can be distinguished by the long, strongly curved spines on the male endites (Figs 4G View Figure 4 , 16A, B View Figure 16 ), the bare dorsal branch (db) of the embolus system (Figs 5E, F, H View Figure 5 , 14E View Figure 14 ), and the triangular plate (tp) of the female epigastric area (Fig. 6G View Figure 6 ). The male of T. mahanadi 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.
Male. Body: yellow-brown, chelicerae and sternum lighter, legs yellow; habitus as in Figure 4A-C View Figure 4 ; body length 1.56. Carapace: 0.76 long, 0.64 wide; sides smooth, lateral margin rebordered (Fig. 4D View Figure 4 ); posterior surface with several large setal bases (Fig. 4H View Figure 4 ). Eyes: 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 View Figure 4 ). Clypeus: height about 0.7 times of ALE diameter, with a triangular, pointed median projection (cmp). Mouthparts (Figs 4G-I View Figure 4 , 16A, B View Figure 16 ): endites slender, with two long, strongly curved spines. Sternum: (Fig. 4F View Figure 4 ). Abdomen: 0.82 long, 0.66 wide; booklung covers ovoid, surface smooth (Fig. 4I View Figure 4 ); 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 View Figure 4 ). Palp (Figs 5 View Figure 5 , 14D-F View Figure 14 ): orange; 0.48 long (0.15, 0.11, 0.09, 0.13); femur greatly elongated (width/length = 0.65) (Fig. 5A, B View Figure 5 ); bulb pear-shaped, tapering apically; embolus system (Fig. 5E, F, H View Figure 5 ) with a bare dorsal branch (db) in prolateral view, and a small median branch (mb) and laterally curved branch (lb) in dorsal view.
Female. Same as male except as noted. Habitus: as in Figure 6A-C View Figure 6 ; slightly larger than male. Body: length 1.76. Carapace: 0.79 long, 0.67 wide. Abdomen: 1.12 long, 0.82 wide. Endites: unmodified. Epigastric area (Figs 6G View Figure 6 , 15C View Figure 15 ): with a large, triangular plate (tp). Endogyne (Fig. 15D View Figure 15 ): 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.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.