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| Gyliotrachela cultura Tanmuangpak & Dumrongrojwattana, 2022 RAFFLES BULLETIN OF ZOOLOGY. 70 |
Abstract
A new species of terrestrial microsnail, Gyliotrachela cultura, from a limestone karst within the integrated agricultural area in Loei province, Northeastern Thailand, is described based on the shell and radula morphology, and genital system. This new species differs from its closest congener G. saraburiensis in both number and position of apertural barriers. An infraparietal lamella, interpalatal plicae, two infrapalatal plicae, a subcolumellar lamella are present in the new species while three infraparietal, two supracolumellar, three subcolumellar, five infrapalatal, three interpalatal, five suprapalatal, and two parallel barriers are present in G. saraburiensis.
Key words. Gyliotrachela, Vertiginidae, microsnail, northeastern Thailand
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| Gyliotrachela cultura, new species. A–F, holotype (NHLRU011), apertural view (A), protoconch (B, C), basal view (D), lateral view (E), and apertural teeth detail (F). G–L, paratype (ZRCBUU 0750), apertural view (G), protoconch (H, I), basal view (J), lateral view (K), and apertural teeth detail (L). Abbreviations for apertural teeth: P = parietal lamella; A = angular lamella; T = twin; SupPL = suprapalatal plica; UPL = upper palatal plica; IPL = interpalatal plicae; LPL = lower palatal plica; InPL = infrapalatal plica; SubC = subcollumellar lamella; C = columellar lamella; SupC = supracolumellar plica; Infp = infraparietal lamella. |
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| Live Gyliotrachela cultura, new species, in situ. |
Gyliotrachela cultura, new species
Diagnosis. Shell small, trumpet-shaped last whorl with free short tuba, peristome expanded; aperture with 26 teeth, the angular lamella, parietal lamella, upper and lower palatal plicae, and columellar lamella being most prominent.
Type locality. Agricultural areas in Mueang Loei District,
Loei Province, Thailand.
Etymology. The specific epithet “cultura” refers to
agriculture, where this new species was discovered.
Kitti Tanmuangpak and Pongrat Dumrongrojwattana. 2022. Gyliotrachela cultura, A New Species of Terrestrial Microsnail (Gastropoda: Eupulmonata: Vertiginidae) from Thailand. RAFFLES BULLETIN OF ZOOLOGY. 70: 407–416.
