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| Формат: | Recurso digital |
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Zenodo
2021
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| Online-ссылка: | https://doi.org/10.5281/zenodo.4771742 |
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Оглавление:
- <p><b><i>Chamalycaeus erawan</i> Páll-Gergely & Hunyadi n. sp.</b></p><p>Fig. 4</p><p><b>Material examined.</b> <b>Holotype:</b> Thailand, Kanchanaburi Province, Erawan National Park, Erawan Falls Trail, 14°22.310’N, 99°8.699’E, 90 m a.s.l. (locality code: 2015/28), 17 Feb. 2015, A. Hunyadi leg., HNHM 104869 (D: 2.45 mm, H: 1.53 mm). <b>Paratypes:</b> 4 shells, same data as for holotype, HA; 1 shell, Thailand, Kanchanaburi Province, 4.3 km SW Kanchanaburi, Taoist Buddhist temple, 13°59’N, 99°31’E, 40 m a.s.l., 13 May 1988, K. Auffenberg leg., litter sample, UF 345935.</p><p><b>Etymology.</b> The specific epithet refers to the type locality (Erawan National Park).</p><p><b>Diagnosis.</b> A small <i>Chamalycaeus</i> species with bluntly angled body whorl, short R2, rounded aperture, and strongly expanded outer peristome.</p><p><b>Description.</b> Shell off-white to light grey, rather glossy, very slightly translucent; shell outline slightly oval in dorsal view; spire slightly elevated, conical-domed; body whorl rather bluntly angled, depressed inward basolaterally in apertural view; protoconch rather low, glossy, spiral striae lacking, 1.25–1.5 whorls; R1 of 1.5–1.75 whorls, with irregular, narrow, but rather low ribs and some weak spiral striation; boundary between R1 and R2 not distinct, but visible due to change in rib density; R2+R3 approximately a quarter whorl; R2 short, about one third of R3 length, only ca. 14–16 ribs; R2 ribs low, dorsally rounded; boundary between R2 and R3 distinct due to moderately deep constriction and almost smooth early R3; R3 with elongated, almost smooth (only a few low riblets/growth lines) central swelling; aperture oblique to shell axis, round; distance between inner and outer peristomes conspicuous, inner peristome protruding, thin, but robust, and slightly expanded; outer peristome strongly expanded, but not reflected, reduced in umbilical area; umbilicus narrow, less than one third shell width.</p><p><b>Measurements.</b> D: 2.25–2.45 mm, H: 1.49–1.56 mm.</p><p><b>Operculum.</b> Unknown.</p><p><b>Differential diagnosis.</b> This new species differs from <i>Chamalycaeus irmatallus</i> n. sp. in the larger size, longer R3, and more expanded peristome.</p><p><b>Distribution.</b> This species is known only from two nearby localities (Fig. 5).</p>