The operculate micro land snail genus Dicharax Kobelt & Möllendorff, 1900 (Caenogastropoda, Alycaeidae) in Thailand, with description of new species
| Autor: | Barna Páll-Gergely, Chirasak Sutcharit, Parin Jirapatrasilp, Piyoros Tongkerd |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Cyclophoroidea
QH301-705.5 Gastropoda Cyclophoridae Zoology Architaenioglossa Intraspecific competition taxonomy Genus Caenogastropoda Animalia Alycaeus Biology (General) Wiwaxia Hygrophila Ecology Evolution Behavior and Systematics biology Land snail Cephalornis biology.organism_classification Peristome Synonym (taxonomy) Mollusca Type locality Dicharax |
| Zdroj: | Zoosystematics and Evolution 97(1): 1-20 Zoosystematics and Evolution, Vol 97, Iss 1, Pp 1-20 (2021) |
| ISSN: | 1860-0743 1435-1935 |
| DOI: | 10.3897/zse.97.59143 |
| Popis: | This study reviews theDicharaxspecies in Thailand. Altogether tenDicharaxspecies are reported, four of which are new to science and described herein. They areDicharax borealisJirapatrasilp & Páll-Gergelysp. nov.,Dicharax burchiJirapatrasilp & Páll-Gergelysp. nov.,Dicharax panhaiJirapatrasilp & Páll-Gergelysp. nov.andDicharax pongratiJirapatrasilp & Tongkerdsp. nov.Alycaeus davisiGodwin-Austen, 1914 is regarded as a junior subjective synonym ofAlycaeus cucullatusTheobald, 1870 (=D. cucullatus) based on a similar depressed-conical shell shape, a long sutural tube and a sharp swelling behind the peristome. Furthermore, the type locality ofAlycaeus pratatensisPanha & Burch, 1997 (=D. pratatensis) had to be amended. Most important characters to distinguishDicharaxspecies are the general shell shape and relative lengths of teleoconch regions, whereas the spiral striation of R1, the shape of swelling of R3, the outer peristome crenulation and protrusion, and the exterior opercular sculpture show large intraspecific variability. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|