Camaena yulinensis Zhou, Wang & Hu, 2020
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publication ID |
https://dx.doi.org/10.3897/zookeys.996.54187 |
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publication LSID |
lsid:zoobank.org:pub:CF98F8DE-F863-419E-B904-183D85779CAB |
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persistent identifier |
https://treatment.plazi.org/id/3038DBDB-A3B2-4364-B2D3-CB7E694EA8ED |
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taxon LSID |
lsid:zoobank.org:act:3038DBDB-A3B2-4364-B2D3-CB7E694EA8ED |
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treatment provided by |
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scientific name |
Camaena yulinensis Zhou, Wang & Hu |
| status |
sp. nov. |
Camaena yulinensis Zhou, Wang & Hu sp. nov. Figures 3D View Figure 3 , 4 View Figure 4 , 5D View Figure 5 , 9 View Figure 9 , Tables 3, 4, 5
Type material.
Holotype. [FJIQBC 19460] Shell height 21.0 mm, shell width 40.5 mm, height of aperture 13.5 mm, width of aperture 18.2 mm, 21 September 2014, collected from the type locality.
Paratype. [FJIQBC 19461-19466] 6 specimens: 3 live adults, 3 empty adult shells, 4 November 2013; [FJIQBC 19468-19472] 5 specimens: 3 live adults, 2 empty juvenile shells, 21 September 2014.
Type locality.
Longquan cave, Yulin, Guangxi, China (22°36'41.24"N, 109°45'21.36"E).
Etymology.
The name of the new species refers to the type locality.
Diagnosis.
Shell. Shell dextral, large, thin, fragile, and slightly lucent, low and flat conical. 4.5 whorls, the front whorls increasing slowly. Spire relatively low. Body whorl rapidly expanded. Shell light yellowish with clear and dense growth lines and spiral bands on the surface. Apex quite blunt. Suture shallow. The protoconch surface smooth for most individuals, but a few are rough. Growth lines clear near the outer side of suture under 32 × stereomicroscope. Last whorl with carinate periphery, a thin reddish brown spiral band on the carina, and many reddish brown spiral bands of different thickness on the upper and lower parts. Aperture lunate. Peristome reflected, flesh-colored, thin, sharp. Columellar lip reflected. Umbilicus reddish brown, open, large, and only 1/3 covered. Inner lip attached to body whorl, forming translucent callus.
Soft body. Pale yellow with irregular black lines. Tentacles dark brown.
Reproductive system. Bursa copulatrix oval, large, with long and tapering pedunculus. Flagellum long and slightly thick, tapering distally. Vas deferens short and thin. Epiphallus medium length and slightly thick. Penis retractor muscle short and wide. Penis short and swollen at distal 1/3, with longitudinal, thin, smooth pilasters internally. Verge conical, large, opened terminally, with some irregular wrinkles on the surface.
Habitat.
The species was found on limestone in Yulin city, Guangxi province.
Distribution.
Only known from the type locality.
Remarks.
Camaena yulinensis sp. nov. differs from C. longsonensis and C. jinpingensis in the key characteristic of large open umbilicus. This new species not only has spiral bands with different thickness on the body whorl but also has a flesh-colored peristome compared to C. vorvonga . The differences between this species and the other three new Camaena species herein have already been described above.
P -distances of the COI gene between C. yulinensis sp. nov. and the other dextral congeners ranges from 0.092 to 0.202 (Table 3 View Table 3 ) and the phylogenetic topology tree supports the establishment of this new species.
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.