Abstract:
Taxonomy of Microsnails in limestone hills in Chiang Rai province had been studied.
Specimens were random collected from limestone areas during March 2013 to December 2014 by
hand collecting. The stataions were; Tum pra temple (Muang District), Mae sua luang cave (Mae
sua District), Pha koong cave, Pra tad wang jom thong temple, Tum pra bum pen boon temple
(Phan District), Tum pha joom temple, Tum pla temple, Doi khun nam nang non Baan jong (Mae
sai District), Tum pra pha ngam temple, Doi pha chang (Wiang chai District) and Tum pha lae
temple, Pech cave, Doi pha tung (Wiang khan District).
A total of 12 families 21 genera and 40 species were recorded. All of these species are
belong to family Hydrocenidae, 1 genus and 2 species; family Alycaeidae, 4 genera, and 4
species; family Diplommatinidae, 1 genus and 7 species; family Pupinidae, 1 genus and 3 species;
family Pupillidae, 6 genera and 13 species; family Endodontidae 1 genus and 1 species; family
Diapheridae 1 genus and 3 species; family Pyramidulidae, 1 genus and 1 species; family
Zonitidae, 1 genus and 2 species; family Ariophantidae, 1 genus and 1 species; family
Glessulidae, 1 genus and 1 species; and family Subulinidae, 2 genus and 2 species respectively.
Only seven species can be identified in species level, the other are identified in generic level. This
is a first recorded of microsnail genus Alycaeus and genus Chamalycaeus in Northern Thailand.