Amphidromus entobaptus

Amphidromus entobaptus
Shell of Amphidromus entobaptus (specimen at the Natural History Museum, Rotterdam)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Camaenidae
Genus:	Amphidromus
Species:	A. entobaptus
Binomial name
Amphidromus entobaptus Dohrn, 1889
Synonyms
Amphidromus (Amphidromus) entobaptusDohrn, 1889 alternative representation Amphidromus perversus var. entobaptusDohrn, 1889 (incorrect assignment)

Amphidromus entobaptus is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Camaenidae. ^[1]

Subspecies

• Amphidromus entobaptus contractusKobelt, 1916
• Amphidromus entobaptus entobaptusDohrn, 1889
• Amphidromus entobaptus toncruziDharma, 2012

• Amphidromus entobaptus busuangensisBartsch, 1917: synonym of Amphidromus entobaptus contractusKobelt, 1916
• Amphidromus entobaptus coronensisBartsch, 1917: synonym of Amphidromus entobaptus contractusKobelt, 1916
• Amphidromus entobaptus culionensisBartsch, 1917: synonym of Amphidromus entobaptus contractusKobelt, 1916
• Amphidromus entobaptus gracilisKobelt, 1916: synonym of Amphidromus entobaptus contractusKobelt, 1916 (invalid: junior homonym of Amphidromus inconstans var. gracilis Rolle, 1903)
• Amphidromus entobaptus linapacensisBartsch, 1917: synonym of Amphidromus entobaptus contractusKobelt, 1916 Kobelt, 1916
• Amphidromus entobaptus viridoflavusBartsch, 1917: synonym of Amphidromus entobaptus contractusKobelt, 1916

Description

The length of the shell attains 46 mm, its diameter 27 mm.

(Original description in Latin) The sinistral shell is imperforate and conico-ovate. It exhibits a somewhat solid structure and a finely striated surface. It appears slightly glossy and presents a pale lemon-yellow or whitish coloration, with the apex and sometimes the suture displaying a narrow white hue. The shell comprises 5 1/2 to 6 somewhat convex whorls. It features an acuminate-oblong aperture that is saturated lemon-yellow on the inside. The peristome is thickened and shortly reflected, showing a white color, and its columellar margin remains vertical and straight. ^[2]

(Description by P. Bartsch) The stout shell is sinistral and elongate-ovate to ovate. It exhibits a color range from almost white to pinkish buff on the outside. Inside, it presents a light orange buff or huffish yellow hue. The early whorls typically appear soiled white, displaying a narrow ashy band immediately above the suture. All the whorls are decidedly appressed at the summit, strongly rounded, and marked by decidedly retractive lines of growth. The aperture is large; the outer lip is reflected, forming a thickened peristome with an almost white edge. The columella appears somewhat sigmoid and is reflected over the base in the shape of a callus. The parietal wall is covered with a thick callus that connects with the columella. The columella and the parietal callus share the same color as the edge of the outer lip. ^[3]

Distribution

This species is endemic to Palawan, the Philippines.

References

1. Amphidromus entobaptus Dohrn, 1889 . 21 April 2025. Retrieved through: World Register of Marine Species .
2. Dohrn, H. (1889). "Beitrag zur Conchylienfauna der philippinischen Insel Palawan". Nachrichtsblatt der deutschen Malakozoologischen Gesellschaft. 20 (1–2): 62-63. This article incorporates text from this source, which is in the public domain .
3. Bartsch, P. (1917). "The Philippine land shells of the genus Amphidromus". United States National Museum Bulletin. 100 (1): 28. This article incorporates text from this source, which is in the public domain .

• Laidlaw, F. F. & Solem, A. (1961). The land snail genus Amphidromus. A synoptic catalogue. Fieldiana: Zoology. 41: 503-677.

External links

• Möllendorff, O.F. von (1898). "Verzeichnis der auf den Philippinen lebenden Landmollusken". bhandlungen der Naturforschenden Gesellschaft zu Görlitz. 22: 148.