Pseudostegodera qiului Chen, 2021
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publication ID |
https://dx.doi.org/10.3897/zookeys.1059.68385 |
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publication LSID |
lsid:zoobank.org:pub:650D7F4C-990E-4CBF-88E3-F0CD38EEC377 |
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persistent identifier |
https://treatment.plazi.org/id/E95104CE-D502-4E48-A256-F0727253745C |
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taxon LSID |
lsid:zoobank.org:act:E95104CE-D502-4E48-A256-F0727253745C |
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treatment provided by |
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scientific name |
Pseudostegodera qiului Chen |
| status |
sp. nov. |
Pseudostegodera qiului Chen sp. nov.
(Figs 1 View Figure 1 , 2 View Figure 2 , 3B-D View Figure 3 , 4E-H View Figure 4 , 7A-D View Figure 7 , 9A-C) View Figure 9
Type material.
• Holotype, IZCAS TM206978, Zihuaping [紫花坪], core area of Shunhuang Mountain National Nature Reserve [舜皇山国家级自然保护区核心区], Huanglong Town [黄龙镇], Xinning County [新宁县], Shaoyang City [邵阳市], Hunan, China, 26°23'31"N, 110°0'25"E, 945 m a.s.l., 2020-VIII-23, leg. Lu Qiu. •Paratype, MYNU/1, same data as holotype.
Measurements.
SDmaj = 31.0 - 34.0 mm, SDmin = 25.0 - 26.4 mm, SH = 12.0 - 13.7 mm (n = 2).
Diagnosis.
Body whorl incompletely covering partial penultimate whorl. Dart sac apparatus absent. Flagellum present.
Description.
Shell (Fig. 3B-D View Figure 3 ). Sinistral, large, depressed, thick and solid, dark reddish-brown. Shell with 51/2 convex whorls. Suture impressed. Protoconch 11/4-11/2 whorls, with regularly arranged fine axial striae that may be invisible by weathering or erosion. Growth lines clear, broken into microscopic tubercles of irregular shape. The last 1/8 to 1/4 body whorl compressed, partly covering penultimate whorl. At 1/4 whorl from the aperture, a spiral depression above periphery and a weak depression near umbilicus making a narrowing on body whorl. Whorl after the narrowing reverting to normal broadness. Aperture semilunar, slightly descending. Peristome white, strongly thickened, expanded, and slightly reflexed. Umbilicus broad, approximately 1/3 of shell major diameter. Protoconch visible through umbilicus.
General anatomy (Fig. 4E-H View Figure 4 ). Eversible head wart absent. On internal body wall of head region between ommatophorous insertions with tiny pits rather than glands (Fig. 4F View Figure 4 ). Each side of mantle edge with a leaf-shaped appendage (Fig. 4G, H View Figure 4 ). Body reddish brown, central dorsa with light longitudinal stripes. Sole dirty white. Jaw arcuate, with ~ 14 more or less projecting ribs (Fig. 4E View Figure 4 ).
Genitalia (Fig. 7A-D View Figure 7 ). Penis sheath short but well developed. Penis somewhat swollen on proximal half, externally simple. In the middle of penis, internally with a single strong longitudinal pilaster almost as thick as epiphallus, ~ 2 mm long (Fig. 7D View Figure 7 ). Epiphallic papilla absent (Fig. 7D View Figure 7 ). Flagellum cylindrical, tapering. Vas deferens thin throughout, approximately as long as penis. Dart sac apparatus absent. Bursa copulatrix duct thickened basally. Bursa copulatrix duct longer than 50 mm. Bursa copulatrix rod-shaped.
Etymology.
This new species is named after Dr Lu Qiu [邱鹭], who provided the specimens and field data.
Ecology.
This species was found under rotten wood.
Distribution.
Only known from the type locality (Fig. 2 View Figure 2 ).
Remarks.
See under the genus.
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.