Cryptozona siamensis
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Ordo: Stylommatophora
Familia: Ariophantidae
Genus: Cryptozona
Name
Cryptozona siamensis (Pfeiffer, 1856) – Wikispecies link – Pensoft Profile
- Helix siamensis Pfeiffer, 1856: 32. Type locality: Siam [Thailand].
- Hemiplecta dichromatica Morlet, 1889: 124, 175, 176, pl. 6, fig. 2. Type locality: de Srakéo à Ang-Son (Siam) [Srakeo Province, Thailand].
- Cryptozona siamensis : Inkhavilay et al. 2019[1]: 75, 76, figs 35a, 56b.
Material examined
Locality no. 4: CUMZ-CM147 (1 specimen in ethanol; Fig. 4D). Locality no. 18: CUMZ-CM146 (2 shells). The snails were found to live on the ground among leaf litter.
Distribution
Cambodia, Laos, Malaysia, Singapore and Thailand (Tan et al. 2016[2], Inkhavilay et al. 2019[1]).
Remarks
This widespread species has recently been recorded from Singapore and Peninsular Malaysia (Tan et al. 2016[2]), Laos (Inkhavilay et al. 2019[1]) and Yunnan, China (C. Sutcharit, pers. obs.). In Thailand, C. siamensis is found throughout the country and the allozyme analysis by Prasankok and Panha (2011)[3] indicates a surprisingly high level of genetic homogeneity among populations. This suggests that C. siamensis probably occupies almost all habitat types through accidental introduction or horticultural trade activities, and this species is especially abundant in human-modified landscapes.
The historical record of this species from Cambodia was probably under the name “Hemiplecta dichromatica Morlet, 1889” which was subsequently considered to be conspecific with this species (Fischer and Dautzenberg 1904[4]). In this survey, C. siamensis was found from a suburb of Krong Chhbar Mon (locality no. 4), in which its habitats are associated with human activities. In contrast, Q. weinkauffiana could be found commonly in both natural forest and anthropogenic habitats.
Taxon Treatment
- Sutcharit, C; Thach, P; Chhuoy, S; Ngor, P; Jeratthitikul, E; Siriwut, W; Srisonchai, R; Ng, T; Pholyotha, A; Jirapatrasilp, P; Panha, S; 2020: Annotated checklist of the land snail fauna from southern Cambodia (Mollusca, Gastropoda) ZooKeys, 948: 1-46. doi
Images
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Other References
- ↑ 1.0 1.1 1.2 Inkhavilay K, Sutcharit C, Bantaowong U, Chanabun R, Siriwut W, Srisonchai R, Pholyotha A, Jirapatrasilp P, Panha S (2019) Annotated checklist of the terrestrial molluscs from Laos (Mollusca, Gastropoda).ZooKeys834: 1–166. https://doi.org/10.3897/zookeys.834.28800
- ↑ 2.0 2.1 Tan S, Chan S, Nguang L, Low M (2016) Making its way down the Peninsula: Discovery of the non‐native Cryptozona siamensis (L. Pfeiffer, 1856) in Singapore, with a note on its status in Peninsular Malaysia (Helicarionoidea: Ariophantidae).Occasional Molluscan Papers5: 1–9.
- ↑ Prasankok P, Panha S (2011) Genetic structure of the common terrestrial pulmonate snail, Cryptozona siamensis (Pfeiffer, 1856), in Thailand.Biochemical Systematics and Ecology39: 449–457. https://doi.org/10.1016/j.bse.2011.06.011
- ↑ Fischer H, Dautzenberg P (1904) Catalogue des mollusques terrestres et fluviatiles de ľIndo-Chine orientale cites jusqu’ à ce jour.In: Mission Pavie, Etudes diverses3: 390–450.
- ↑ Simroth H (1893) Ueber einige Parmarion-Arten. In: . Weber (Ed.) Zoologische Ergebnisse einer Reise in Niederländisch Ost-Indien 3: 100–11.