Pommerhelix monacha
Pommerhelix monacha is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Camaenidae. [5]
| Pommerhelix monacha | |
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| An acid-eroded shell of Pommerhelix monacha in the Mount Wilson rainforest, Blue Mountains National Park, Australia | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| (unranked): | clade Heterobranchia clade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora informal group Sigmurethra |
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| Genus: | |
| Species: | P. monacha |
| Binomial name | |
| Pommerhelix monacha | |
| Synonyms[2] | |
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This species is found in eastern Australia.
Distribution
This snail is found in high altitude rainforests in Blue Mountains,[2] central eastern New South Wales, Australia.
The type locality is "Australia", which can be specified to Sassafras Gully, Springwood, New South Wales, Australia.[2]
Description
The shell of Pommerhelix monacha is subglobose (almost round).[2] The shell has 5.6–6.0 whorls. The color of the shell is dark brown to black,[2] but it can also be dark red or purple in colour.[6] The shell sculpture consists of zigzag ridges combined with small ridges on the periostracum.[2] The umbilicus is closed.[2] The aperture is roundly ovate in shape.[2]
The width of the shell is 26.2-30.3 mm.[2] The height of the shell is 18.1-23.2 mm.[2]
The visible soft parts are a yellowish grey in colour:[6] the body is grey to dark grey[2] and the mantle is dark yellow or orange.[2]
 An apertural view of a shell of Pommerhelix monacha |
 An umbilical view of a shell of Pommerhelix monacha |
References
- Pfeiffer L. K. G. (1859). P. Z. S. page 25. plate 43, figure 7.
- Clark S. A. (2009). "A review of the land snail genus Meridolum (Gastropoda: Camaenidae) from central New South Wales, Australia". Molluscan Research 29(2): 61-120. abstract.
- Tryon G. W. (1887). Manual of Conchology, structural and systematic, with illustrations of the species. Second series: Pulmonata. Volume 3. Helicidae - Volume I., page 216, plate 50, figs. 27-28.
- Pilsbry H. A. (1890). Manual of Conchology, structural and systematic, with illustrations of the species. Second series: Pulmonata. Volume 6. Helicidae - Volume IV. page 133, plate 43, fig. 39.
- MolluscaBase eds. (2022). MolluscaBase. Pommerhelix monacha (Pfeiffer, 1859). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1149995 on 2022-02-06
- Michael Shea, Australian Museum, personal communication.
- Mclauchlan, C. F. (1954). Three new land shells from New South Wales. Australian Zoologist. 12: 39.
- Clark, S.A. (2009). A review of the land snail genus Meridolum (Gastropoda: Camaenidae) from central New South Wales, Australia. Molluscan Research. 29(2): 61–120.
External links
- Pfeiffer, L. (1859). Descriptions of twenty-seven new species of land-shells, from the collection of H. Cuming, Esq. Proceedings of the Zoological Society of London. 27 (385): 23–29, pls 43–44. London
- Crosse H. (1864). Diagnoses de mollusques terrestres nouveaux. Journal de Conchyliologie. 12(3): 282-286
