Pollicaria mouhoti (Pfeiffer, 1862)
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https://dx.doi.org/10.3897/zookeys.287.4617 |
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persistent identifier |
https://treatment.plazi.org/id/A6D326A4-1300-B9B9-42CE-153C2BC83F1A |
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scientific name |
Pollicaria mouhoti (Pfeiffer, 1862) |
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Pollicaria mouhoti (Pfeiffer, 1862)
Hybocystis mouhoti Pfeiffer, 1862: 276, pl. 36, fig. 13. Type locality: Laos Mountain, Cambodia. Pfeiffer 1863: 227, 228, pl. 59, figs 5-8. Crosse 1885: 190,191, pl. 11, fig. 3.
Megalostoma (Hybocystis) mouhoti -von Martens, 1867: 67.
Pollicaria mouhoti -Sowerby, 1878: Pupinidae , pl. 8, species 67. Kobelt 1902: 290.
Diagnosis.
Shell small to large, pupoid, solid; monochrome purple to black, sometimes with yellowish to bright orange spire. Periostracum thin; shell surface with distinct malleations on upper half of last whorl. Whorls 5-6; sutures moderately impressed; apex obtuse. Last whorl large about two-thirds of shell height, distorted and flattened in front. Aperture almost circular, shallow posterior angled groove present. Peristome and inside aperture orange to red; parietal declining shoulder absent. Lip thickened, expanded, reflexed, margin slightly duplicated; umbilicus narrow. Operculum calcareous concentric.
Distribution.
The type locality of Pollicaria mouhoti was given as Laos Mountain, Cambodia. However, subsequent records of this species were from Thailand, Laos and Cambodia ( Pfeiffer 1862, Crosse 1885, Kobelt 1902, Solem 1966).
Remarks.
von Martens (1867) and Pain (1974) synonymised this species with Pollicaria myersii and stated that all Pollicaria specimens collected from Thailand should be regarded as this species. However, examination of the type specimens of Pollicaria mouhoti ( Fig. 4H View Figure 4 ) showed that it was clearly distinct from Pollicaria myersii in shell shape, sculpture and colour pattern. The major distinguishing shell characters of Pollicaria mouhoti are the smaller shell size, purplish shell colour, bright orange spire, expanded bright orange to red apertural lip and bold wrinkles on the dorsal side of last whorl ( Tables 1 View Table 1 , 2 View Table 2 ). In addition, the chromosome analysis shows a clear difference in karyotype patterns between these two species ( Kongim et al. 2009, 2010). Hence, Pollicaria mouhoti is removed from the synonymy of Pollicaria myersii and reinstated as a distinct species.
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