Pollicaria mouhoti monochroma
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Ordo: Architaenioglossa
Familia: Pupinidae
Genus: Pollicaria
Name
Pollicaria mouhoti Kongim and Panha ssp. n. – Wikispecies link – Pensoft Profile
Type material
Holotype: CUMZ 1577 (Fig. 4J; height 34.5 mm, width 18.4 mm, 6½ whorls) from the type locality, paratypes CUMZ 1548 (Fig. 4K; 9 shells), 1561 (82 shells), 1562 (85 shells); NHMUK 20130073 (5 shells); MNHN IM-2012-2103; SMF341492 (5 shells).
Type locality
Limestone outcrop with dry forest at Wat Tam Pha Bing, Wungsapoong District, Loei Province, Thailand (17°14'1.3"N, 101°44'3.5"E).
Other material examined
Phakeng-Phanang, Loei: ZMMSU 0025, 0026. Phu Luang Wildlife Sanctuary, Loei: CUMZ 1524. Phu Phalom, Muang, Loei: CUMZ 1547, 1560, 1565, 1567, 1580. Phu Phasamyod, Loei: ZMMSU 0011. Tam Erawan, Wungsapoong, Loei: CUMZ 1555, 1579. Tam Pha Bing, Wungsapoong, Loei: CUMZ 1548, 1561, 1562, 1577, ZMMSU 0001, 0004, 0006, 0017, 0028. Tam Pha Singh, Wungsapoong, Loei: CUMZ 1543, 1546. Wat Po Thi-sat, Nonghin, Loei: CUMZ 1557. Wat Tam Kuhawari, Nonghin, Loei: CUMZ 1540, 1549. Wat Tam Pha Mak-ho, Wungsapoong, Loei: CUMZ 1530, 1542. Wat Tam Pha Poo, Loei: CUMZ 1545, 1550. Wat Tam Piya, Loei: CUMZ 1527. Khao Wungpha, Nawung, Nongbua Lumphoo: CUMZ 1563, 1564. Nawung, Nongbua Lumphoo: CUMZ 1581. Tam Suwankuha, Nongbua Lumphoo: ZMMSU 0007.
Etymology
From the Greek monos = one or single, and chroma = color of the skin; referring to the characteristic uniform dark brown to blackish spire color of the shell.
Description
Shell: Shell relatively small, pupoid, monochrome purple to black. Periostracum thin and transparent. Whorls 5-6; sutures moderately impressed; apex obtuse; spire short. Last whorl large about two-thirds of shell height, flattened in front. Shell surface rough with malleations on upper half of last whorl. Aperture almost circular, shallow posterior angled groove present; peristome continuous, yellow to pale orange. Lip thickened, broadly expanded; umbilicus narrow. Operculum thick, calcareous, concentric, exterior little concave.
Radula: Taenioglossate radula, teeth arrangement with central, lateral and marginal teeth shape similar to the nominotypical subspecies.
Distribution
Pollicaria mouhoti monochroma ssp. n. is restricted to the northern limit of the species’ distribution in Loei, Phetchabun, Chaiyaphum and Nongbua Lumphoo Provinces.
Remark
Pollicaria mouhoti monochroma ssp. n. can be distinguished from the nominotypical subspecies by having a much smaller, entirely black to purple shell (Tables 1, 2) and a distinct karyotype pattern (see Kongim et al. 2009[1], 2010[2]). The shell size and shape of this subspecies are similar to that of Pollicaria gravida and Pollicaria crossei, but the purple shell is a distinguishing characteristic.
Shell character variations can be observed in the Phu Pha Lom, Loei Province population. These individuals exhibit a relatively larger shell than the typical populations (Table 2), however, the monochrome black shell and similar karyotype pattern indicate that they belong to this subspecies (Kongim et al. 2009[1]).
Taxon Treatment
- Kongim, B; Sutcharit, C; Naggs, F; Panha, S; 2013: Taxonomic revision of the Elephant Pupinid snail genus Pollicaria Gould, 1856 (Prosobranchia, Pupinidae) ZooKeys, 287: 19-40. doi
Images
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![Figure 4. Shell morphology of Pollicaria spp. A–E Pollicaria gravida A lectotype UMZC I.102935.A B paralectotype UMZC I.102935.B-E C syntype of Otopoma blennus Benson, 1856 UMZC I.102930.A and D, E specimens from Farm Caves, Moulmein, Burma (NHMUK 88.124.863.4–5; specimen with ‘x’ was figured in Gude (1921)[3], fig. 29) F, G Pollicaria myersii F form Siam (NHMUK 20090242; specimen figured in Pfeiffer, 1856a, pl. 19, figs 1, 2), and G specimen from Pahom, Vang Vieng, Laos (CUMZ 1572) H, I Pollicaria mouhoti mouhoti H lectotype (NHMUK 20130071/1), and I specimen from Tam Wungdang, Phitsanulok (CUMZ 1533) J, K Pollicaria mouhoti monochroma ssp. n. from the type locality, J holotype CUMZ 1577, and K paratype CUMZ 1548.](/wiki/File:ZooKeys-287-019-g004.jpg)
Other References
- ↑ 1.0 1.1 Kongim B, Sutcharit C, Tongkerd P, Panha S (2009) Karyotype differentiation within the Elephant Pupinid snail, Pollicaria mouhoti (Pfeiffer, 1862) (Caenogastropoda: Pupinidae). The Natural History Journal of Chulalongkorn University 9: 201-208.
- ↑ Kongim B, Sutcharit C, Tongkerd P, Tan S, Quynh N, Naggs F, Panha S (2010) Karyotype variation in the genus Pollicaria (Caenogastropoda: Pupinidae). Zoological Studies 49: 125-131.
- ↑ Gude G (1921) Mollusca III, Land Operculates (Cyclophoridae, Truncatellidae, Assimineidae, Helicinidae).In: Shipley AE (Ed) The fauna of British India including Ceylon and Burma, 386 pp.
