Four new cyclophoroid species from Thailand and Laos (Gastropoda: Caenogastropoda: Alycaeidae, Diplommatinidae, Pupinidae) Author Páll-Gergely, Barna Author Hunyadi, András text Zoosystema 2018 2018-02-13 40 3 59 66 journal article 10.5252/zoosystema2018v40 0f4653c6-d04c-4e97-91df-c10f3b0390bc 1638-9387 3738089 urn:lsid:zoobank.org:pub:1B3E0AE7-2EEE-4C6A-B408-955B5695D82E Pseudopomatias caligosus n. sp. ( Fig. 3 ) TYPE MATERIAL . — Thailand . Mae Hong Son Province , 9.1 km from Ban Soppong towards Mae Hong Son , left side of road # 1095, 785 m a.s.l. , 19°33.123’N , 98°11.694’E , leg. Hunyadi A. , 09.II.2015 ., HNHM 100176 ( holotype ), HNHM 100442 (figured paratype ), coll. HA ( 17 paratypes + 9 juvenile shells [not paratypes ]), coll. PGB , 2 paratypes . ETYMOLOGY. — The specific epithet caligosus (Latin: covered with mist) refers to the nickname of the Thai Province Mae Hong Son (“city of three mists”). TYPE LOCALITY. — Thailand , Mae Hong Son Province , 9.1 km from Ban Soppong towards Mae Hong Son , left side of road # 1095, 785 m a.s.l. , 19°33.123’N , 98°11.694’E . DIAGNOSIS. — Shell medium sized to large for the genus, slender turriform with regular ribs, very fine spiral striation (mostly on the upper whorls), and a reflected peristome. DIFFERENTIAL DIAGNOSIS. — This new species is most similar to P. peguensis ( Theobald, 1864 ) in terms of shell size and the bulging whorls, but differs from that species in the less glossy shell, the much stronger ribs, and the reflected peristome. Pseudopomatias shanensis Páll-Gergely, 2015 also has less bulging whorls, a more strongly expanded peristome and denser ribs with clearly visible spiral striation between them. DISTRIBUTION. — This species is known from the type locality only. DESCRIPTION Shell off-white to yellowish, all examined shells covered in reddish soil; shell very slender turriform, widest at its base; the 8.5-9.25 (n = 5), strongly bulging whorls separated by deep suture; protoconch with 2.5 whorls, first c. 0.75 whorl very finely granulated; remaining whorls very finely, regularly ribbed; teleoconch also finely, regularly ribbed; ribs rather strong, with triangular cross section; upper whorls with very fine spiral and radial lines, visible only under strong magnification ( Fig. 3F ); spiral lines getting weaker and less regular on last c. 2 whorls (here area between ribs dominated by very fine radial lines, Fig. 3G ); aperture rounded with very slightly angled columellar-parietal transition and slightly more sharply angled parietal-palatal transition; peristome whitish, expanded and strongly reflected; inner peristome protruding in some specimens, but the boundary between inner and outer peristomes usually hardy visible. Operculum Proteinaceous (“horny”), thin, flat (not concave); outer surface multispiral without elevated lamina; inner surface glossy, with a small, but elevated ventral nipple. Radula ( Fig. 3F ) Radula taenioglossate. Radular teeth arranged in v-shaped rows, each transverse row with seven teeth (2-1-1-1-2). Central (rachidian) tooth not constricted at its middle, with well-developed, slender, pointed central cusp and one smaller, pointed lateral cusp on each side; inner marginal (= lateral) teeth with four cusps, all pointed, central cusp being the largest; two outer marginal teeth with 4-4 slender, pointed cusps (except for the outermost cusp of outer marginal tooth, which is rather blunt triangular). Measurements (in mm) H = 9.7-12, D = 3.8-4.4 (smallest and largest shells measured).