Pollicaria Gould, 1856

Jirapatrasilp, Parin, Sutcharit, Chirasak & Panha, Somsak, 2022, Annotated checklist of the operculated land snails from Thailand (Mollusca, Gastropoda, Caenogastropoda): the family Pupinidae, with descriptions of several new species and subspecies, and notes on classification of Pupina Vignard, 1829 and Pupinella Gray, 1850 from mainland Southeast Asia, ZooKeys 1119, pp. 1-115 : 1

2. Genus Pollicaria Gould, 1856

Pollicaria Gould, 1856: 14. Kobelt 1902: 288, 289. Egorov 2013: 15, 16.

Type species.

Cyclostoma pollex Gould, 1856 (junior synonym of Megalomastoma gravidum Benson, 1856), by monotypy.

Diagnosis.

Shell of great size (up to 50 mm in shell height); pupoid shape with shallow posterior angled groove at palatal edge as breathing device; with or without parietal declining shoulder inside the peristome.

Differential diagnosis.

Pollicaria can be distinguished from all other genera in this subfamily by a greater shell size, and a shallow posterior angled groove at palatal edge as a breathing device ( Kongim et al. 2013; Minton et al. 2017).

Remarks.

The taxonomic history of Pollicaria was reviewed in Kongim et al. (2013) and Minton et al. (2017). The juvenile shell of this genus (Fig. 6A ) does not develop the large last whorl seen in adults (Fig. 6B ), making its shell shape similar to the pulmonated ariophantid snails, which might lead to a misidentification [see the case of Ariophanta huberi Thach, 2018 and P. rochebruni (Mabille, 1887) in Páll-Gergely and Hunyadi (2018a)]. The distribution of Pollicaria species in Thailand from Kongim et al. (2013) and this study is provided in Fig. 7 .

Figures

Figure 6. A, B Pollicaria mouhoti monochroma: A juvenile specimen CUMZ 12182 from Tham Suea Lueang Temple, Loei and B paratype CUMZ 1562 from Tam Pha Bing Temple, Loei C-E Pollicaria mouhoti mouhoti C lectotype of Hybocystis mouhoti NHMUK 20130071 / 1 from Lao Mountains, Camboja D holotype of ' Pollicaria nicoarlingi ' MNHN-IM- 2000 - 37277, and E specimen CUMZ 12166 from Wang Daeng Cave, Phitsanulok F Pollicaria myersii, holotype of ' Pollicaria huberi ' NHMUK 20180253. Photo: F. Prugnaud, MNHN (D).

Figure 7. Map of northern Thailand showing the distribution of Pollicaria mouhoti mouhoti (filled circle), Pollicaria mouhoti monochroma (open circle), Pseudopomatias caligosus (square), Pseudopomatias doiangkhangensis sp. nov. (hexagon), Pseudopomatias pallgergelyi sp. nov. (triangle), Pupinella mansuyi (cross), and Rhaphaulus tonkinensis (star). Each red symbol indicates the type locality of its respective taxon. The red filled circle denotes the type locality of Pollicaria nicoarlingi.